v40.3.0-rc.0

Switch from yarn classic to pnpm (#5184 )
Merge branch 'master' into develop
2026-02-11 15:06:14 +00:00 · 2026-02-11 10:35:25 +00:00 · 2026-02-10 15:17:11 +00:00 · 2026-02-10 15:16:24 +00:00 · 2026-02-08 11:25:34 +00:00 · 2026-02-05 10:13:44 +00:00
46 changed files with 9138 additions and 6489 deletions
@@ -1,7 +1,7 @@
 *                         @matrix-org/element-web-reviewers
 /.github/workflows/**     @matrix-org/element-web-team
 /package.json             @matrix-org/element-web-team
-/yarn.lock                @matrix-org/element-web-team
+/pnpm-lock.yaml           @matrix-org/element-web-team
 /scripts/**               @matrix-org/element-web-team
 /src/webrtc               @matrix-org/element-call-reviewers
 /src/matrixrtc               @matrix-org/element-call-reviewers
@@ -19,7 +19,7 @@ jobs:
        runs-on: ubuntu-24.04
        steps:
            - name: Notify matrix-react-sdk repo that a new SDK build is on develop so it can CI against it
-              uses: peter-evans/repository-dispatch@5fc4efd1a4797ddb68ffd0714a238564e4cc0e6f # v4
+              uses: peter-evans/repository-dispatch@28959ce8df70de7be546dd1250a005dd32156697 # v4
              with:
                  token: ${{ secrets.ELEMENT_BOT_TOKEN }}
                  repository: ${{ matrix.repo }}
@@ -21,13 +21,14 @@ jobs:
                  ref: staging
                  fetch-depth: 0

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
                  node-version-file: package.json
-                  cache: "yarn"
+                  cache: "pnpm"

            - name: Install Deps
-              run: "yarn install --frozen-lockfile"
+              run: "pnpm install --frozen-lockfile"

            - uses: t3chguy/release-drafter@105e541c2c3d857f032bd522c0764694758fabad
              id: draft-release
@@ -33,13 +33,14 @@ jobs:
                  sparse-checkout: |
                      scripts/release

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: Install Deps
-              run: "yarn install --frozen-lockfile"
+              run: "pnpm install --frozen-lockfile"

            - name: Set up git
              run: |
@@ -73,7 +74,7 @@ jobs:
                      fi

                      echo "Resetting $PACKAGE to develop branch..."
-                      yarn add "github:matrix-org/$PACKAGE#develop"
+                      pnpm add "github:matrix-org/$PACKAGE#develop"
                      git add -u
                      git commit -m "Reset $PACKAGE back to develop branch"
                  done <<< "$DEPENDENCIES"
@@ -123,13 +123,14 @@ jobs:
                  git config --global user.email "releases@riot.im"
                  git config --global user.name "RiotRobot"

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: Install dependencies
-              run: "yarn install --frozen-lockfile"
+              run: "pnpm install --frozen-lockfile"

            - name: Handle develop dependencies
              run: |
@@ -140,14 +141,14 @@ jobs:
                      VERSION=${dep[1]}

                      echo "::warning title=Develop dependency found::$DEPENDENCY will be kept at $VERSION"
-                      yarn upgrade "$PACKAGE@$VERSION" --exact
+                      pnpm add "$PACKAGE@$VERSION" --save-exact
                      git add -u
                      git commit -m "Keep $PACKAGE at $VERSION"
                  done

            - name: Bump package.json version
              run: |
-                  yarn version --no-git-tag-version --new-version "${VERSION#v}"
+                  pnpm version --no-git-tag-version "${VERSION#v}"
                  git add package.json

            - name: Add to CHANGELOG.md
@@ -175,7 +176,7 @@ jobs:

            - name: Build assets
              if: steps.prepare.outputs.has-dist-script == '1'
-              run: DIST_VERSION="$VERSION" yarn dist
+              run: DIST_VERSION="$VERSION" pnpm dist

            - name: Upload release assets & signatures
              if: inputs.asset-path
@@ -21,10 +21,11 @@ jobs:
              with:
                  ref: staging

-            - name: 🔧 Yarn cache
-              uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - name: 🔧 pnpm cache
+              uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  registry-url: "https://registry.npmjs.org"
                  node-version-file: package.json

@@ -33,7 +34,7 @@ jobs:
              run: npm install -g npm@latest

            - name: 🔨 Install dependencies
-              run: "yarn install --frozen-lockfile"
+              run: "pnpm install --frozen-lockfile"

            - name: 🚀 Publish to npm
              id: npm-publish
@@ -50,9 +50,10 @@ jobs:
                  ref: staging
                  token: ${{ secrets.ELEMENT_BOT_TOKEN }}

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version: "lts/*"

            - name: Bump dependency
@@ -61,8 +62,8 @@ jobs:
              run: |
                  git config --global user.email "releases@riot.im"
                  git config --global user.name "RiotRobot"
-                  yarn upgrade "$DEPENDENCY" --exact
-                  git add package.json yarn.lock
+                  pnpm add "$DEPENDENCY" --save-exact
+                  git add package.json pnpm-lock.yaml
                  git commit -am"Upgrade dependency to $DEPENDENCY"
                  git push origin staging

@@ -75,17 +76,18 @@ jobs:
            - name: 🧮 Checkout code
              uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6

-            - name: 🔧 Yarn cache
-              uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - name: 🔧 pnpm cache
+              uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: 🔨 Install dependencies
-              run: "yarn install --frozen-lockfile"
+              run: "pnpm install --frozen-lockfile"

            - name: 📖 Generate docs
-              run: yarn gendoc
+              run: pnpm gendoc

            - name: Upload artifact
              uses: actions/upload-pages-artifact@7b1f4a764d45c48632c6b24a0339c27f5614fb0b # v4
@@ -27,7 +27,7 @@ jobs:
        steps:
            # We create the status here and then update it to success/failure in the `report` stage
            # This provides an easy link to this workflow_run from the PR before Sonarcloud is done.
-            - uses: guibranco/github-status-action-v2@5530c593759f489bba08272e96986ffc571c1ea1
+            - uses: guibranco/github-status-action-v2@9bfa8773cdbdc6c185747fd43cd7faa9d7c32f09
              with:
                  authToken: ${{ secrets.GITHUB_TOKEN }}
                  state: pending
@@ -75,7 +75,7 @@ jobs:

            - name: "🩻 SonarCloud Scan"
              id: sonarcloud
-              uses: matrix-org/sonarcloud-workflow-action@9f6f057c1b30500877460c66d4ae937e53d168ee
+              uses: matrix-org/sonarcloud-workflow-action@ea0cd9dbd5562e79816685972bc0d03c235a900c
              # workflow_run fails report against the develop commit always, we don't want that for PRs
              continue-on-error: ${{ github.event.workflow_run.head_branch != 'develop' }}
              with:
@@ -88,7 +88,7 @@ jobs:
                  revision: ${{ github.event.workflow_run.head_sha }}
                  token: ${{ secrets.SONAR_TOKEN }}

-            - uses: guibranco/github-status-action-v2@5530c593759f489bba08272e96986ffc571c1ea1
+            - uses: guibranco/github-status-action-v2@9bfa8773cdbdc6c185747fd43cd7faa9d7c32f09
              if: always()
              with:
                  authToken: ${{ secrets.GITHUB_TOKEN }}
@@ -16,16 +16,17 @@ jobs:
        steps:
            - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: Install Deps
-              run: "yarn install"
+              run: "pnpm install"

            - name: Typecheck
-              run: "yarn run lint:types"
+              run: "pnpm run lint:types"

    js_lint:
        name: "ESLint"
@@ -33,16 +34,17 @@ jobs:
        steps:
            - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: Install Deps
-              run: "yarn install"
+              run: "pnpm install"

            - name: Run Linter
-              run: "yarn run lint:js"
+              run: "pnpm run lint:js"

    node_example_lint:
        name: "Node.js example"
@@ -50,22 +52,17 @@ jobs:
        steps:
            - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: Install Deps
-              run: "yarn install"
+              run: "pnpm install"

            - name: Build Types
-              run: "yarn build:types"
-
-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
-              with:
-                  cache: "npm"
-                  node-version-file: "examples/node/package.json"
-                  # cache-dependency-path: '**/package-lock.json'
+              run: "pnpm build:types"

            - name: Install Example Deps
              run: "npm install"
@@ -85,16 +82,17 @@ jobs:
        steps:
            - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: Install Deps
-              run: "yarn install --frozen-lockfile"
+              run: "pnpm install --frozen-lockfile"

            - name: Run Linter
-              run: "yarn lint:workflows"
+              run: "pnpm lint:workflows"

    docs:
        name: "JSDoc Checker"
@@ -102,16 +100,17 @@ jobs:
        steps:
            - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: Install Deps
-              run: "yarn install"
+              run: "pnpm install"

            - name: Generate Docs
-              run: "yarn run gendoc --treatWarningsAsErrors --suppressCommentWarningsInDeclarationFiles"
+              run: "pnpm run gendoc --treatWarningsAsErrors --suppressCommentWarningsInDeclarationFiles"

            - name: Upload Artifact
              uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
@@ -127,16 +126,17 @@ jobs:
        steps:
            - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version-file: package.json

            - name: Install Deps
-              run: "yarn install --frozen-lockfile"
+              run: "pnpm install --frozen-lockfile"

            - name: Run linter
-              run: "yarn run lint:knip"
+              run: "pnpm run lint:knip"

    element-web:
        name: Downstream tsc element-web
@@ -147,9 +147,10 @@ jobs:
              with:
                  repository: element-hq/element-web

-            - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
+            - uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version: "lts/*"

            - name: Install Dependencies
@@ -159,7 +160,7 @@ jobs:
                  JS_SDK_GITHUB_BASE_REF: ${{ github.sha }}

            - name: Typecheck
-              run: "yarn run lint:types"
+              run: "pnpm run lint:types"

    # Hook for branch protection to skip downstream typechecking outside of merge queues
    downstream:
@@ -24,15 +24,16 @@ jobs:
            - name: Checkout code
              uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6

+            - uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4
            - name: Setup Node
              id: setupNode
-              uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
+              uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6
              with:
-                  cache: "yarn"
+                  cache: "pnpm"
                  node-version: ${{ matrix.node }}

            - name: Install dependencies
-              run: "yarn install"
+              run: "pnpm install"

            - name: Get number of CPU cores
              id: cpu-cores
@@ -40,7 +41,7 @@ jobs:

            - name: Run tests
              run: |
-                  yarn test \
+                  pnpm test \
                      --coverage=${{ env.ENABLE_COVERAGE }} \
                      --maxWorkers ${{ steps.cpu-cores.outputs.count }} \
                      ./spec/${{ matrix.specs }}
@@ -112,7 +113,7 @@ jobs:
        steps:
            - name: Skip SonarCloud on merge queues
              if: env.ENABLE_COVERAGE == 'false'
-              uses: guibranco/github-status-action-v2@5530c593759f489bba08272e96986ffc571c1ea1
+              uses: guibranco/github-status-action-v2@9bfa8773cdbdc6c185747fd43cd7faa9d7c32f09
              with:
                  authToken: ${{ secrets.GITHUB_TOKEN }}
                  state: success
@@ -3,6 +3,7 @@

 /.npmrc
 /*.log
+pnpm-lock.yaml
 package-lock.json
 .lock-wscript
 build/Release
@@ -1,3 +1,26 @@
+Changes in [40.2.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v40.2.0) (2026-02-10)
+==================================================================================================
+## 🦖 Deprecations
+
+* [MatrixRTC] Remove sending of deprecated `notify` event (we now use `m.rtc.notification`) ([#5167](https://github.com/matrix-org/matrix-js-sdk/pull/5167)). Contributed by @toger5.
+
+## ✨ Features
+
+* Use stable /auth\_metadata endpoint where homeserver supports v1.15 ([#5174](https://github.com/matrix-org/matrix-js-sdk/pull/5174)). Contributed by @hughns.
+* Support additional\_creators in upgradeRoom (MSC4289) ([#5173](https://github.com/matrix-org/matrix-js-sdk/pull/5173)). Contributed by @andybalaam.
+* [MatrixRTC] Minimal change to transition from "" to "ROOM" as the callId/slotId ([#5166](https://github.com/matrix-org/matrix-js-sdk/pull/5166)). Contributed by @toger5.
+* [MatrixRTC] Do not send the `livekit_alias` in sticky events ([#5165](https://github.com/matrix-org/matrix-js-sdk/pull/5165)). Contributed by @toger5.
+* Improve startup performance by using `promise.all` when processing rooms from sync ([#5095](https://github.com/matrix-org/matrix-js-sdk/pull/5095)). Contributed by @MidhunSureshR.
+* Add OAuthGrantType enum for OAuth 2.0 API grant types ([#5161](https://github.com/matrix-org/matrix-js-sdk/pull/5161)). Contributed by @hughns.
+* Add support for stable OAuth2.0 aware feature from MSC3824 ([#5159](https://github.com/matrix-org/matrix-js-sdk/pull/5159)). Contributed by @hughns.
+* Give RoomWidgetClient the ability to send and receive sticky events ([#5142](https://github.com/matrix-org/matrix-js-sdk/pull/5142)). Contributed by @robintown.
+
+## 🐛 Bug Fixes
+
+* [js sdk embedded/widget] Fix race where this.syncApi.injectRoomEvents was called before the syncApi is instantiated ([#5168](https://github.com/matrix-org/matrix-js-sdk/pull/5168)). Contributed by @toger5.
+* [MatrixRTC] Fix delayId not resetting on leave ([#5156](https://github.com/matrix-org/matrix-js-sdk/pull/5156)). Contributed by @toger5.
+
+
 Changes in [40.1.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v40.1.0) (2026-01-27)
 ==================================================================================================
 ## 🦖 Deprecations
@@ -41,10 +41,10 @@ endpoints from before Matrix 1.1, for example.
 > Servers may require or use authenticated endpoints for media (images, files, avatars, etc). See the
 > [Authenticated Media](#authenticated-media) section for information on how to enable support for this.

-Using `yarn` instead of `npm` is recommended. Please see the Yarn [install guide](https://classic.yarnpkg.com/en/docs/install)
-if you do not have it already.
+Using `pnpm` instead of `npm` is recommended. Please see the pnpm [install
+guide](https://pnpm.io/installation#using-corepack) if you do not have it already.

-`yarn add matrix-js-sdk`
+`pnpm add matrix-js-sdk`

 ```javascript
 import * as sdk from "matrix-js-sdk";
@@ -310,7 +310,7 @@ This SDK uses [Typedoc](https://typedoc.org/guides/doccomments) doc comments. Yo
 host the API reference from the source files like this:

 ```
-  $ yarn gendoc
+  $ pnpm gendoc
  $ cd docs
  $ python -m http.server 8005
 ```
@@ -453,7 +453,7 @@ want to use this SDK, skip this section._
 First, you need to pull in the right build tools:

 ```
- $ yarn install
+ $ pnpm install
 ```

 ## Building
@@ -461,17 +461,17 @@ First, you need to pull in the right build tools:
 To build a browser version from scratch when developing:

 ```
- $ yarn build
+ $ pnpm build
 ```

 To run tests:

 ```
- $ yarn test
+ $ pnpm test
 ```

 To run linting:

 ```
- $ yarn lint
+ $ pnpm lint
 ```
@@ -21,4 +21,4 @@ export PATH="$rootdir/node_modules/.bin:$PATH"

 # now run our checks
 cd "$tmpdir"
-yarn lint
+pnpm lint
@@ -1,19 +1,19 @@
 {
    "name": "matrix-js-sdk",
-    "version": "40.1.0",
+    "version": "40.3.0-rc.0",
    "description": "Matrix Client-Server SDK for Javascript",
    "engines": {
        "node": ">=22.0.0"
    },
    "scripts": {
-        "prepare": "yarn build",
+        "prepare": "pnpm build",
        "start": "echo THIS IS FOR LEGACY PURPOSES ONLY. && babel src -w -s -d lib --verbose --extensions \".ts,.js\"",
        "clean": "rimraf lib",
-        "build": "yarn clean && yarn build:compile && yarn build:types",
+        "build": "pnpm clean && pnpm build:compile && pnpm build:types",
        "build:types": "tsc -p tsconfig-build.json --emitDeclarationOnly",
        "build:compile": "babel -d lib --verbose --extensions \".ts,.js\" src",
        "gendoc": "typedoc",
-        "lint": "yarn lint:types && yarn lint:js && yarn lint:workflows",
+        "lint": "pnpm lint:types && pnpm lint:js && pnpm lint:workflows",
        "lint:js": "eslint --max-warnings 0 src spec && prettier --check .",
        "lint:js-fix": "prettier --log-level=warn --write . && eslint --fix src spec",
        "lint:types": "tsc --noEmit",
@@ -21,7 +21,7 @@
        "lint:knip": "knip",
        "test": "vitest",
        "test:watch": "vitest --watch",
-        "coverage": "yarn test --coverage"
+        "coverage": "pnpm test --coverage"
    },
    "repository": {
        "type": "git",
@@ -56,7 +56,7 @@
        "jwt-decode": "^4.0.0",
        "loglevel": "^1.9.2",
        "matrix-events-sdk": "0.0.1",
-        "matrix-widget-api": "^1.14.0",
+        "matrix-widget-api": "^1.16.1",
        "oidc-client-ts": "^3.0.1",
        "p-retry": "7",
        "sdp-transform": "^3.0.0",
@@ -84,7 +84,7 @@
        "@stylistic/eslint-plugin": "^5.0.0",
        "@types/content-type": "^1.1.5",
        "@types/debug": "^4.1.7",
-        "@types/node": "18",
+        "@types/node": "22",
        "@types/sdp-transform": "^2.4.5",
        "@typescript-eslint/eslint-plugin": "^8.0.0",
        "@typescript-eslint/parser": "^8.0.0",
@@ -98,7 +98,7 @@
        "eslint-config-prettier": "^10.0.0",
        "eslint-import-resolver-typescript": "^4.0.0",
        "eslint-plugin-import": "^2.26.0",
-        "eslint-plugin-jsdoc": "^61.0.0",
+        "eslint-plugin-jsdoc": "^62.0.0",
        "eslint-plugin-matrix-org": "^3.0.0",
        "eslint-plugin-n": "^14.0.0",
        "eslint-plugin-tsdoc": "^0.5.0",
@@ -110,7 +110,7 @@
        "knip": "^5.0.0",
        "lint-staged": "^16.0.0",
        "matrix-mock-request": "^2.5.0",
-        "prettier": "3.7.4",
+        "prettier": "3.8.1",
        "rimraf": "^6.0.0",
        "typedoc": "^0.28.1",
        "typedoc-plugin-coverage": "^4.0.0",
@@ -122,5 +122,16 @@
    },
    "resolutions": {
        "expect": "30.2.0"
-    }
+    },
+    "pnpm": {
+        "peerDependencyRules": {
+            "allowedVersions": {
+                "eslint": "8"
+            }
+        },
+        "allowedDeprecatedVersions": {
+            "eslint": "8"
+        }
+    },
+    "packageManager": "pnpm@10.28.2+sha512.41872f037ad22f7348e3b1debbaf7e867cfd448f2726d9cf74c08f19507c31d2c8e7a11525b983febc2df640b5438dee6023ebb1f84ed43cc2d654d2bc326264"
 }
@@ -0,0 +1 @@
+nodeLinker: hoisted
@@ -32,7 +32,14 @@ import {
    type IRoomEvent,
 } from "matrix-widget-api";

-import { createRoomWidgetClient, MatrixError, MsgType, UpdateDelayedEventAction } from "../../src/matrix";
+import {
+    createRoomWidgetClient,
+    EventType,
+    type IEvent,
+    MatrixError,
+    MsgType,
+    UpdateDelayedEventAction,
+} from "../../src/matrix";
 import { MatrixClient, ClientEvent, type ITurnServer as IClientTurnServer } from "../../src/client";
 import { SyncState } from "../../src/sync";
 import { type ICapabilities, type RoomWidgetClient } from "../../src/embedded";
@@ -42,6 +49,7 @@ import { sleep } from "../../src/utils";
 import { SlidingSync } from "../../src/sliding-sync";
 import { logger } from "../../src/logger";
 import { flushPromises } from "../test-utils/flushPromises";
+import { RoomStickyEventsEvent, type RoomStickyEventsMap } from "../../src/models/room-sticky-events";

 const testOIDCToken = {
    access_token: "12345678",
@@ -49,6 +57,7 @@ const testOIDCToken = {
    matrix_server_name: "homeserver.oabc",
    token_type: "Bearer",
 };
+
 class MockWidgetApi extends EventEmitter {
    public start = vi.fn().mockResolvedValue(undefined);
    public getClientVersions = vi.fn();
@@ -167,6 +176,9 @@ describe("RoomWidgetClient", () => {
                "org.matrix.rageshake_request",
                { request_id: 123 },
                "!1:example.org",
+                undefined,
+                undefined,
+                undefined,
            );
        });

@@ -422,6 +434,7 @@ describe("RoomWidgetClient", () => {
                    "!1:example.org",
                    2000,
                    undefined,
+                    undefined,
                );
            });

@@ -442,6 +455,7 @@ describe("RoomWidgetClient", () => {
                    "!1:example.org",
                    undefined,
                    parentDelayId,
+                    undefined,
                );
            });

@@ -855,6 +869,162 @@ describe("RoomWidgetClient", () => {
        });
    });

+    describe("sticky events", () => {
+        describe("when supported", () => {
+            const doesServerSupportUnstableFeatureMock = vi.fn((feature) =>
+                Promise.resolve(feature === "org.matrix.msc4354"),
+            );
+
+            beforeAll(() => {
+                MatrixClient.prototype.doesServerSupportUnstableFeature = doesServerSupportUnstableFeatureMock;
+            });
+
+            afterAll(() => {
+                doesServerSupportUnstableFeatureMock.mockReset();
+            });
+
+            it("requests capabilities when set", async () => {
+                await makeClient({ sendSticky: true, receiveSticky: true });
+                expect(widgetApi.requestCapability).toHaveBeenCalledWith(MatrixCapabilities.MSC4407SendStickyEvent);
+                expect(widgetApi.requestCapability).toHaveBeenCalledWith(MatrixCapabilities.MSC4407ReceiveStickyEvent);
+            });
+
+            it("does not request capabilities when unset", async () => {
+                await makeClient({});
+                expect(widgetApi.requestCapability).not.toHaveBeenCalledWith(MatrixCapabilities.MSC4407SendStickyEvent);
+                expect(widgetApi.requestCapability).not.toHaveBeenCalledWith(
+                    MatrixCapabilities.MSC4407ReceiveStickyEvent,
+                );
+            });
+
+            it("sends", async () => {
+                await makeClient({ sendEvent: [EventType.RTCMembership], sendSticky: true });
+                expect(widgetApi.requestCapabilityForRoomTimeline).toHaveBeenCalledWith("!1:example.org");
+                expect(widgetApi.requestCapabilityToSendEvent).toHaveBeenCalledWith(EventType.RTCMembership);
+                expect(widgetApi.requestCapability).toHaveBeenCalledWith(MatrixCapabilities.MSC4407SendStickyEvent);
+                await client._unstable_sendStickyEvent("!1:example.org", 2000, null, EventType.RTCMembership, {
+                    msc4354_sticky_key: "test",
+                });
+                expect(widgetApi.sendRoomEvent).toHaveBeenCalledWith(
+                    EventType.RTCMembership,
+                    { msc4354_sticky_key: "test" },
+                    "!1:example.org",
+                    undefined,
+                    undefined,
+                    2000,
+                );
+            });
+
+            it("receives (adds, updates, then removes when redacted)", async () => {
+                await makeClient({ receiveEvent: [EventType.RTCMembership, EventType.RoomRedaction] });
+                const room = client.getRoom("!1:example.org")!;
+
+                function expectStickyEvents(events: IEvent[]) {
+                    expect([...room._unstable_getStickyEvents()].map((e) => e.getEffectiveEvent())).toEqual(events);
+                }
+
+                async function sendAndExpectStickyUpdate(
+                    eventToSend: IEvent,
+                    added: IEvent[],
+                    updated: { current: IEvent; previous: IEvent }[],
+                    removed: IEvent[],
+                ) {
+                    const emittedStickyUpdate = new Promise<
+                        Parameters<RoomStickyEventsMap[RoomStickyEventsEvent.Update]>
+                    >((resolve) => room.once(RoomStickyEventsEvent.Update, (...args) => resolve(args)));
+
+                    widgetApi.emit(
+                        `action:${WidgetApiToWidgetAction.SendEvent}`,
+                        new CustomEvent(`action:${WidgetApiToWidgetAction.SendEvent}`, {
+                            detail: { data: eventToSend },
+                        }),
+                    );
+
+                    const [addedReceived, updatedReceived, removedReceived] = await emittedStickyUpdate;
+                    expect(addedReceived.map((e) => e.getEffectiveEvent())).toEqual(added);
+                    expect(
+                        updatedReceived.map(({ current, previous }) => ({
+                            current: current.getEffectiveEvent(),
+                            previous: previous.getEffectiveEvent(),
+                        })),
+                    ).toEqual(updated);
+                    expect(removedReceived.map((e) => e.getEffectiveEvent())).toEqual(removed);
+                }
+
+                // First, add a new sticky event to the map. The client should emit.
+                const event1 = new MatrixEvent({
+                    type: EventType.RTCMembership,
+                    event_id: "$pduhfiidph",
+                    room_id: "!1:example.org",
+                    sender: "@alice:example.org",
+                    msc4354_sticky: { duration_ms: 1200000 },
+                    content: { msc4354_sticky_key: "test" },
+                }).getEffectiveEvent();
+                await sendAndExpectStickyUpdate(event1, [event1], [], []);
+                // It should remain cached in the sticky map
+                expectStickyEvents([event1]);
+
+                // Next, update the same key in the sticky map
+                const event2 = new MatrixEvent({
+                    type: EventType.RTCMembership,
+                    event_id: "$zshgyutptfh",
+                    room_id: "!1:example.org",
+                    sender: "@alice:example.org",
+                    msc4354_sticky: { duration_ms: 1200000 },
+                    content: { msc4354_sticky_key: "test" },
+                }).getEffectiveEvent();
+                await sendAndExpectStickyUpdate(event2, [], [{ current: event2, previous: event1 }], []);
+                expectStickyEvents([event2]);
+
+                // Next, redact the second event. Because it has the first as a predecessor, the map should revert to
+                // the first event.
+                const redaction1 = new MatrixEvent({
+                    type: EventType.RoomRedaction,
+                    event_id: "$cimoexnvz",
+                    room_id: "!1:example.org",
+                    sender: "@alice:example.org",
+                    redacts: event2.event_id,
+                    content: { redacts: event2.event_id },
+                }).getEffectiveEvent();
+                await sendAndExpectStickyUpdate(redaction1, [], [{ current: event1, previous: event2 }], []);
+                expectStickyEvents([event1]);
+
+                // Finally, redact the first event. Now everything should be gone from the map.
+                const redaction2 = new MatrixEvent({
+                    type: EventType.RoomRedaction,
+                    event_id: "$drgzmenlh",
+                    room_id: "!1:example.org",
+                    sender: "@alice:example.org",
+                    redacts: event1.event_id,
+                    content: { redacts: event1.event_id },
+                }).getEffectiveEvent();
+                await sendAndExpectStickyUpdate(redaction2, [], [], [event1]);
+                expectStickyEvents([]);
+            });
+        });
+
+        describe("when unsupported", () => {
+            const doesServerSupportUnstableFeatureMock = vi.fn().mockResolvedValue(false);
+
+            beforeAll(() => {
+                MatrixClient.prototype.doesServerSupportUnstableFeature = doesServerSupportUnstableFeatureMock;
+            });
+
+            afterAll(() => {
+                doesServerSupportUnstableFeatureMock.mockReset();
+            });
+
+            it("fails to send", async () => {
+                await makeClient({ sendEvent: [EventType.RTCMembership], sendSticky: true });
+                await expect(
+                    client._unstable_sendStickyEvent("!1:example.org", 2000, null, EventType.RTCMembership, {
+                        msc4354_sticky_key: "test",
+                    }),
+                ).rejects.toThrow("Server does not support");
+            });
+        });
+    });
+
    describe("to-device messages", () => {
        const unencryptedContentMap = new Map([
            ["@alice:example.org", new Map([["*", { hello: "alice!" }]])],
@@ -51,18 +51,21 @@ describe("SSO login URL", function () {
            const urlString = client.client.getSsoLoginUrl(redirectUri, undefined, undefined, undefined);
            const url = new URL(urlString);
            expect(url.searchParams.has("org.matrix.msc3824.action")).toBe(false);
+            expect(url.searchParams.has("action")).toBe(false);
        });

        it("register", function () {
            const urlString = client.client.getSsoLoginUrl(redirectUri, undefined, undefined, SSOAction.REGISTER);
            const url = new URL(urlString);
            expect(url.searchParams.get("org.matrix.msc3824.action")).toEqual("register");
+            expect(url.searchParams.get("action")).toEqual("register");
        });

        it("login", function () {
            const urlString = client.client.getSsoLoginUrl(redirectUri, undefined, undefined, SSOAction.LOGIN);
            const url = new URL(urlString);
            expect(url.searchParams.get("org.matrix.msc3824.action")).toEqual("login");
+            expect(url.searchParams.get("action")).toEqual("login");
        });
    });
 });
@@ -88,7 +88,7 @@ import { mockOpenIdConfiguration } from "../test-utils/oidc.ts";
 import { type CryptoBackend } from "../../src/common-crypto/CryptoBackend";
 import { SyncResponder } from "../test-utils/SyncResponder.ts";
 import { mockInitialApiRequests } from "../test-utils/mockEndpoints.ts";
-import { type Transport } from "src/matrixrtc/index.ts";
+import { type Transport } from "../../src/matrixrtc/index.ts";

 vi.useFakeTimers();

@@ -3877,6 +3877,27 @@ describe("MatrixClient", function () {
            makeClient();
        });

+        it("should use stable prefix", async () => {
+            const metadata = mockOpenIdConfiguration();
+            client.getVersions = vi.fn().mockResolvedValue({
+                versions: ["v1.15"],
+            });
+            httpLookups = [
+                {
+                    method: "GET",
+                    path: `/auth_metadata`,
+                    data: metadata,
+                    prefix: "/_matrix/client/v1",
+                },
+            ];
+
+            await expect(client.getAuthMetadata()).resolves.toEqual({
+                ...metadata,
+                signingKeys: [],
+            });
+            expect(httpLookups.length).toEqual(0);
+        });
+
        it("should use unstable prefix", async () => {
            const metadata = mockOpenIdConfiguration();
            httpLookups = [
@@ -158,8 +158,35 @@ describe("CallMembership", () => {
                expect(membership.eventId).toBe("$eventid");
            });
            it("returns correct slot_id", () => {
-                expect(membership.slotId).toBe("m.call#");
-                expect(membership.slotDescription).toStrictEqual({ id: "", application: "m.call" });
+                // slot_id is application and call_id dependent. So we create
+                // a membership for each possible combination
+
+                // non call application (should not alter call_id even with empty string)
+                const nonCallMembership = createCallMembership(makeMockEvent(), {
+                    ...membershipTemplate,
+                    application: "m.not.a.call",
+                    call_id: "",
+                });
+                // non "" call id should not be altered
+                const callMembershipCustomId = createCallMembership(makeMockEvent(), {
+                    ...membershipTemplate,
+                    call_id: "customCallId",
+                });
+
+                // for membership (application = m.call and call_id = "") we expect "" -> ROOM
+                // for legacy events we expect the room to be added automagically
+                // See INFO_SLOT_ID_LEGACY_CASE comments
+                expect(membership.slotId).toBe("m.call#ROOM");
+                expect(membership.slotDescription).toStrictEqual({ id: "ROOM", application: "m.call" });
+
+                expect(nonCallMembership.slotId).toBe("m.not.a.call#");
+                expect(nonCallMembership.slotDescription).toStrictEqual({ id: "", application: "m.not.a.call" });
+
+                expect(callMembershipCustomId.slotId).toBe("m.call#customCallId");
+                expect(callMembershipCustomId.slotDescription).toStrictEqual({
+                    id: "customCallId",
+                    application: "m.call",
+                });
            });
            it("returns correct deviceId", () => {
                expect(membership.deviceId).toBe("AAAAAAA");
@@ -49,7 +49,7 @@ const mockFocus = { type: "mock" };

 const textEncoder = new TextEncoder();

-const callSession = { id: "", application: "m.call" };
+const callSession = { id: "ROOM", application: "m.call" };

 describe("MatrixRTCSession", () => {
    let client: MatrixClient;
@@ -134,12 +134,12 @@ describe("MatrixRTCSession", () => {
                );
                await flushPromises();
                expect(sess?.memberships.length).toEqual(1);
-                expect(sess?.memberships[0].slotDescription.id).toEqual("");
+                expect(sess?.memberships[0].slotDescription.id).toEqual("ROOM");
                expect(sess?.memberships[0].scope).toEqual("m.room");
                expect(sess?.memberships[0].application).toEqual("m.call");
                expect(sess?.memberships[0].deviceId).toEqual("AAAAAAA");
                expect(sess?.memberships[0].isExpired()).toEqual(false);
-                expect(sess?.slotDescription.id).toEqual("");
+                expect(sess?.slotDescription.id).toEqual("ROOM");
            });

            it("ignores memberships where application is not m.call", () => {
@@ -381,12 +381,12 @@ describe("MatrixRTCSession", () => {
            });
            await flushPromises();
            expect(sess?.memberships.length).toEqual(1);
-            expect(sess?.memberships[0].slotDescription.id).toEqual("");
+            expect(sess?.memberships[0].slotDescription.id).toEqual("ROOM");
            expect(sess?.memberships[0].scope).toEqual("m.room");
            expect(sess?.memberships[0].application).toEqual("m.call");
            expect(sess?.memberships[0].deviceId).toEqual("AAAAAAA");
            expect(sess?.memberships[0].isExpired()).toEqual(false);
-            expect(sess?.slotDescription.id).toEqual("");
+            expect(sess?.slotDescription.id).toEqual("ROOM");
        });
        it("combines sticky and membership events when both exist", async () => {
            // Create a room with identical member state and sticky state for the same user.
@@ -415,7 +415,7 @@ describe("MatrixRTCSession", () => {
            const memberships = sess.memberships;
            expect(memberships.length).toEqual(2);
            expect(memberships[0].sender).toEqual(stickyUserId);
-            expect(memberships[0].slotDescription.id).toEqual("");
+            expect(memberships[0].slotDescription.id).toEqual("ROOM");
            expect(memberships[0].scope).toEqual("m.room");
            expect(memberships[0].application).toEqual("m.call");
            expect(memberships[0].deviceId).toEqual("AAAAAAA");
@@ -424,7 +424,7 @@ describe("MatrixRTCSession", () => {
            // Then state
            expect(memberships[1].sender).toEqual(membershipTemplate.user_id);

-            expect(sess?.slotDescription.id).toEqual("");
+            expect(sess?.slotDescription.id).toEqual("ROOM");
        });
        it("handles an incoming sticky event to an existing session", async () => {
            const mockRoom = makeMockRoom([membershipTemplate]);
@@ -620,9 +620,7 @@ describe("MatrixRTCSession", () => {
        it("sends a notification when starting a call and emit DidSendCallNotification", async () => {
            // Simulate a join, including the update to the room state
            // Ensure sendEvent returns event IDs so the DidSendCallNotification payload includes them
-            sendEventMock
-                .mockResolvedValueOnce({ event_id: "legacy-evt" })
-                .mockResolvedValueOnce({ event_id: "new-evt" });
+            sendEventMock.mockResolvedValueOnce({ event_id: "new-evt" });
            const didSendEventFn = vi.fn();
            sess!.once(MatrixRTCSessionEvent.DidSendCallNotification, didSendEventFn);
            // Create an additional listener to create a promise that resolves after the emission.
@@ -647,43 +645,25 @@ describe("MatrixRTCSession", () => {
                "sender_ts": expect.any(Number),
            });

-            // Check if deprecated notify event is also sent.
-            expect(client.sendEvent).toHaveBeenCalledWith(mockRoom!.roomId, EventType.CallNotify, {
-                "application": "m.call",
-                "m.mentions": { user_ids: [], room: true },
-                "notify_type": "ring",
-                "call_id": "",
-            });
            await didSendNotification;
            // And ensure we emitted the DidSendCallNotification event with both payloads
-            expect(didSendEventFn).toHaveBeenCalledWith(
-                {
-                    "event_id": "new-evt",
-                    "lifetime": 30000,
-                    "m.mentions": { room: true, user_ids: [] },
-                    "m.relates_to": {
-                        event_id: expect.any(String),
-                        rel_type: "m.reference",
-                    },
-                    "notification_type": "ring",
-                    "sender_ts": expect.any(Number),
+            expect(didSendEventFn).toHaveBeenCalledWith({
+                "event_id": "new-evt",
+                "lifetime": 30000,
+                "m.mentions": { room: true, user_ids: [] },
+                "m.relates_to": {
+                    event_id: expect.any(String),
+                    rel_type: "m.reference",
                },
-                {
-                    "application": "m.call",
-                    "call_id": "",
-                    "event_id": "legacy-evt",
-                    "m.mentions": { room: true, user_ids: [] },
-                    "notify_type": "ring",
-                },
-            );
+                "notification_type": "ring",
+                "sender_ts": expect.any(Number),
+            });
        });

        it("sends a notification with a intent when starting a call and emits DidSendCallNotification", async () => {
            // Simulate a join, including the update to the room state
            // Ensure sendEvent returns event IDs so the DidSendCallNotification payload includes them
-            sendEventMock
-                .mockResolvedValueOnce({ event_id: "legacy-evt" })
-                .mockResolvedValueOnce({ event_id: "new-evt" });
+            sendEventMock.mockResolvedValueOnce({ event_id: "new-evt" });
            const didSendEventFn = vi.fn();
            sess!.once(MatrixRTCSessionEvent.DidSendCallNotification, didSendEventFn);
            // Create an additional listener to create a promise that resolves after the emission.
@@ -707,7 +687,7 @@ describe("MatrixRTCSession", () => {
            ]);

            await sess!._onRTCSessionMemberUpdate();
-            const ownMembershipId = sess?.memberships[0].eventId;
+            const ownMembershipEventId = sess?.memberships[0].eventId;
            expect(sess!.getConsensusCallIntent()).toEqual("audio");

            expect(client.sendEvent).toHaveBeenCalledWith(mockRoom!.roomId, EventType.RTCNotification, {
@@ -715,43 +695,27 @@ describe("MatrixRTCSession", () => {
                "notification_type": "ring",
                "m.call.intent": "audio",
                "m.relates_to": {
-                    event_id: ownMembershipId,
+                    event_id: ownMembershipEventId,
                    rel_type: "m.reference",
                },
                "lifetime": 30000,
                "sender_ts": expect.any(Number),
            });

-            // Check if deprecated notify event is also sent.
-            expect(client.sendEvent).toHaveBeenCalledWith(mockRoom!.roomId, EventType.CallNotify, {
-                "application": "m.call",
-                "m.mentions": { user_ids: [], room: true },
-                "notify_type": "ring",
-                "call_id": "",
-            });
            await didSendNotification;
            // And ensure we emitted the DidSendCallNotification event with both payloads
-            expect(didSendEventFn).toHaveBeenCalledWith(
-                {
-                    "event_id": "new-evt",
-                    "lifetime": 30000,
-                    "m.mentions": { room: true, user_ids: [] },
-                    "m.relates_to": {
-                        event_id: expect.any(String),
-                        rel_type: "m.reference",
-                    },
-                    "notification_type": "ring",
-                    "m.call.intent": "audio",
-                    "sender_ts": expect.any(Number),
+            expect(didSendEventFn).toHaveBeenCalledWith({
+                "event_id": "new-evt",
+                "lifetime": 30000,
+                "m.mentions": { room: true, user_ids: [] },
+                "m.relates_to": {
+                    event_id: expect.any(String),
+                    rel_type: "m.reference",
                },
-                {
-                    "application": "m.call",
-                    "call_id": "",
-                    "event_id": "legacy-evt",
-                    "m.mentions": { room: true, user_ids: [] },
-                    "notify_type": "ring",
-                },
-            );
+                "notification_type": "ring",
+                "m.call.intent": "audio",
+                "sender_ts": expect.any(Number),
+            });
        });

        it("doesn't send a notification when joining an existing call", async () => {
@@ -71,7 +71,7 @@ function createAsyncHandle<T>(method: MockedFunction<(...args: any[]) => any>) {
    return { reject, resolve };
 }

-const callSession = { id: "", application: "m.call" };
+const callSession = { id: "ROOM", application: "m.call" };

 describe("MembershipManager", () => {
    let client: MockClient;
@@ -139,6 +139,7 @@ describe("MembershipManager", () => {
                    "org.matrix.msc3401.call.member",
                    {
                        application: "m.call",
+                        // This tests INFO_SLOT_ID_LEGACY_CASE because it is using callSession = { id: "ROOM", application: "m.call" }
                        call_id: "",
                        device_id: "AAAAAAA",
                        expires: 14400000,
@@ -147,6 +148,7 @@ describe("MembershipManager", () => {
                        focus_active: focusActive,
                        scope: "m.room",
                    },
+                    // This tests INFO_SLOT_ID_LEGACY_CASE because it is using callSession = { id: "ROOM", application: "m.call" }
                    "_@alice:example.org_AAAAAAA_m.call",
                );
                restartScheduledDelayedEventHandle.resolve?.();
@@ -160,6 +162,45 @@ describe("MembershipManager", () => {
                expect(client._unstable_sendDelayedStateEvent).toHaveBeenCalledTimes(1);
            });

+            it("sends correct call_id and state key when using non empty string. Not using empty string -> ROOM hack. See: INFO_SLOT_ID_LEGACY_CASE", async () => {
+                // Spys/Mocks
+
+                const customCallSession = { id: "custom", application: "m.call" };
+                const restartScheduledDelayedEventHandle = createAsyncHandle<void>(
+                    client._unstable_restartScheduledDelayedEvent,
+                );
+
+                // Test
+                const memberManager = new MembershipManager(undefined, room, client, customCallSession);
+                memberManager.join([focus], undefined);
+                // expects
+                await waitForMockCall(client.sendStateEvent, Promise.resolve({ event_id: "id" }));
+                expect(client.sendStateEvent).toHaveBeenCalledWith(
+                    room.roomId,
+                    "org.matrix.msc3401.call.member",
+                    {
+                        application: "m.call",
+                        call_id: "custom",
+                        device_id: "AAAAAAA",
+                        expires: 14400000,
+                        foci_preferred: [focus],
+                        membershipID: "@alice:example.org:AAAAAAA",
+                        focus_active: focusActive,
+                        scope: "m.room",
+                    },
+                    "_@alice:example.org_AAAAAAA_m.callcustom",
+                );
+                restartScheduledDelayedEventHandle.resolve?.();
+                expect(client._unstable_sendDelayedStateEvent).toHaveBeenCalledWith(
+                    room.roomId,
+                    { delay: 8000 },
+                    "org.matrix.msc3401.call.member",
+                    {},
+                    "_@alice:example.org_AAAAAAA_m.callcustom",
+                );
+                expect(client._unstable_sendDelayedStateEvent).toHaveBeenCalledTimes(1);
+            });
+
            it("reschedules delayed leave event if sending state cancels it", async () => {
                const memberManager = new MembershipManager(undefined, room, client, callSession);
                const waitForSendState = waitForMockCall(client.sendStateEvent);
@@ -416,8 +457,9 @@ describe("MembershipManager", () => {
            await manager.leave();
            expect(client._unstable_sendScheduledDelayedEvent).toHaveBeenLastCalledWith("id");
            expect(client.sendStateEvent).toHaveBeenCalled();
+            expect(manager.delayId).toBe(undefined);
        });
-        it("send leave event when leave is called and resolving delayed leave fails", async () => {
+        it("send leave event when leave is called and resolving delayed leave fails unknown error", async () => {
            const manager = new MembershipManager({}, room, client, callSession);
            manager.join([focus]);
            await vi.advanceTimersByTimeAsync(1);
@@ -431,6 +473,27 @@ describe("MembershipManager", () => {
                {},
                "_@alice:example.org_AAAAAAA_m.call",
            );
+            // If there is a unknown error, we do not reset the delayId
+            // The delayed event might still be around and we track it.
+            expect(manager.delayId).not.toBe(undefined);
+        });
+        it("send leave event when leave is called and resolving delayed leave fails not found error", async () => {
+            const manager = new MembershipManager({}, room, client, callSession);
+            manager.join([focus]);
+            await vi.advanceTimersByTimeAsync(1);
+            (client._unstable_sendScheduledDelayedEvent as Mock<any>).mockRejectedValue(
+                new MatrixError({ errcode: "M_NOT_FOUND" }, 404),
+            );
+            await manager.leave();
+
+            // We send a normal leave event since we failed using sendScheduledDelayedEvent.
+            expect(client.sendStateEvent).toHaveBeenLastCalledWith(
+                room.roomId,
+                "org.matrix.msc3401.call.member",
+                {},
+                "_@alice:example.org_AAAAAAA_m.call",
+            );
+            expect(manager.delayId).toBe(undefined);
        });
        it("does nothing if not joined", async () => {
            const manager = new MembershipManager({}, room, client, callSession);
@@ -947,8 +1010,8 @@ describe("MembershipManager", () => {
                                id: "@alice:example.org:AAAAAAA_m.call",
                                device_id: "AAAAAAA",
                            },
-                            slot_id: "m.call#",
-                            rtc_transports: [focus],
+                            slot_id: "m.call#ROOM",
+                            rtc_transports: [{ type: focus.type, livekit_service_url: focus.livekit_service_url }],
                            versions: [],
                            msc4354_sticky_key: "@alice:example.org:AAAAAAA_m.call",
                        },
@@ -20,7 +20,7 @@ import { type Mocked, type MockedObject } from "vitest";
 import { EventType, type Room, RoomEvent, type MatrixClient, type MatrixEvent } from "../../../src";
 import { CallMembership, type SessionMembershipData } from "../../../src/matrixrtc";
 import { secureRandomString } from "../../../src/randomstring";
-import { type CallMembershipIdentityParts } from "src/matrixrtc/EncryptionManager";
+import { type CallMembershipIdentityParts } from "../../../src/matrixrtc/EncryptionManager";
 import { logger } from "../../../src/logger.ts";

 export type MembershipData = (SessionMembershipData | {}) & { user_id: string };
@@ -0,0 +1,57 @@
+/*
+Copyright 2026 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { MatrixClient } from "../../src/client";
+
+describe("Room upgrades", function () {
+    it("Sends an HTTP request upgrading the room", () => {
+        // Given a client with a fake authedRequest method
+        const { client, authedRequest } = createClient();
+
+        // When we upgrade the room to version 12
+        client.upgradeRoom("!r1", "12");
+
+        // Then we make an HTTP request to the correct endpoint, with the
+        // version provided in the JSON.
+        expect(authedRequest).toHaveBeenCalledWith("POST", "/rooms/!r1/upgrade", undefined, { new_version: "12" });
+    });
+
+    it("Includes additional_creators if provided", () => {
+        // Given a client with a fake authedRequest method
+        const { client, authedRequest } = createClient();
+
+        // When we upgrade the room to version 13 and supply additionalCreators
+        client.upgradeRoom("!r1", "13", ["@u:s.co", "@v:a.b"]);
+
+        // Then we make an HTTP request to the correct endpoint, with the
+        // version and additional creators provided.
+        expect(authedRequest).toHaveBeenCalledWith("POST", "/rooms/!r1/upgrade", undefined, {
+            new_version: "13",
+            additional_creators: ["@u:s.co", "@v:a.b"],
+        });
+    });
+});
+
+///
+function createClient(): { client: MatrixClient; authedRequest: any } {
+    const authedRequest = vi.fn();
+    const client = new MatrixClient({
+        baseUrl: "https://my.home.server",
+        userId: "@u:s.co",
+    });
+    client.http.authedRequest = authedRequest;
+    return { client, authedRequest };
+}
@@ -236,4 +236,105 @@ describe("OutgoingRequestsManager", () => {
            expect(processor.makeOutgoingRequest).toHaveBeenCalledTimes(1);
        });
    });
+
+    describe("Repeated processing of outgoing requests", () => {
+        it("Processes any requests still in the queue after processing", async () => {
+            // Given that the first time we call outgoingRequests we get back
+            // requests 1 and 2, but the second time, we get request 3
+            const [request1, request2, request3] = setupOutgoingTwoRequestsThenOne();
+
+            // (And requests finish immediately)
+            processor.makeOutgoingRequest.mockImplementation(async () => {
+                return;
+            });
+
+            // When we ask a manager to process the requests
+            await manager.doProcessOutgoingRequests();
+
+            // Then all three are processed because we re-call outgoingRequests
+            // to check for more
+            await vi.waitFor(() => expect(olmMachine.outgoingRequests).toHaveBeenCalledTimes(3));
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledTimes(3);
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledWith(request1);
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledWith(request2);
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledWith(request3);
+        });
+
+        it("Does reprocess if any request succeeded, even if some failed", async () => {
+            // Given that the first time we call outgoingRequests we get back
+            // requests 1 and 2, but the second time, we get request 3
+            const [request1, request2, request3] = setupOutgoingTwoRequestsThenOne();
+
+            // And the first request fails, but subsequent ones pass
+            processor.makeOutgoingRequest
+                .mockImplementationOnce(async () => {
+                    throw new Error("This request failed!");
+                })
+                .mockImplementation(async () => {
+                    return;
+                });
+
+            // When we ask a manager to process the requests
+            await manager.doProcessOutgoingRequests();
+
+            // Then all three are processed because we re-call outgoingRequests
+            // to check for more, even though one failed
+            await vi.waitFor(() => expect(olmMachine.outgoingRequests).toHaveBeenCalledTimes(3));
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledTimes(3);
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledWith(request1);
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledWith(request2);
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledWith(request3);
+        });
+
+        it("Does not reprocess if all requests failed", async () => {
+            // Given that the first time we call outgoingRequests we get back
+            // requests 1 and 2, but the second time, we get request 3
+            const [request1, request2, request3] = setupOutgoingTwoRequestsThenOne();
+
+            // And the first two requests fail, but subsequent ones pass
+            processor.makeOutgoingRequest
+                .mockImplementationOnce(async () => {
+                    throw new Error("Request 1 failed!");
+                })
+                .mockImplementationOnce(async () => {
+                    throw new Error("Request 2 failed!");
+                })
+                .mockImplementation(async () => {
+                    return;
+                });
+
+            // When we ask a manager to process the requests
+            await manager.doProcessOutgoingRequests();
+
+            // Then only the first two requests are processed, because since
+            // they both failed we stop retrying
+            await vi.waitFor(() => expect(olmMachine.outgoingRequests).toHaveBeenCalledTimes(1));
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledTimes(2);
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledWith(request1);
+            expect(processor.makeOutgoingRequest).toHaveBeenCalledWith(request2);
+            expect(processor.makeOutgoingRequest).not.toHaveBeenCalledWith(request3);
+        });
+
+        /// Mock calls to olmMachine.outgoingRequests. The first time it is
+        // called, return two requests and the second time return a third one.
+        //
+        // Returns the three returned requests.
+        function setupOutgoingTwoRequestsThenOne(): [OutgoingRequest, OutgoingRequest, OutgoingRequest] {
+            const request1 = new RustSdkCryptoJs.KeysQueryRequest("1", "{}");
+            const request2 = new RustSdkCryptoJs.KeysUploadRequest("2", "{}");
+            const request3 = new RustSdkCryptoJs.KeysUploadRequest("3", "{}");
+
+            // Given that the first time we call outgoingRequests we get back
+            // requests 1 and 2, but the second time, we get request 3
+            olmMachine.outgoingRequests
+                .mockImplementationOnce(async (): Promise<OutgoingRequest[]> => {
+                    return [request1, request2];
+                })
+                .mockImplementationOnce(async (): Promise<OutgoingRequest[]> => {
+                    return [request3];
+                });
+
+            return [request1, request2, request3];
+        }
+    });
 });
@@ -48,11 +48,17 @@ export interface IPasswordFlow extends ILoginFlow {
    type: "m.login.password";
 }

-export const DELEGATED_OIDC_COMPATIBILITY = new UnstableValue(
-    "delegated_oidc_compatibility",
+export const OAUTH_AWARE_PREFERRED_FLOW_FIELD = new UnstableValue(
+    "oauth_aware_preferred",
    "org.matrix.msc3824.delegated_oidc_compatibility",
 );

+/**
+ * @alias
+ * @deprecated use `OAUTH_AWARE_PREFERRED_FLOW_FIELD` instead.
+ */
+export const DELEGATED_OIDC_COMPATIBILITY = OAUTH_AWARE_PREFERRED_FLOW_FIELD;
+
 /**
 * Representation of SSO flow as per https://spec.matrix.org/v1.3/client-server-api/#client-login-via-sso
 */
@@ -60,8 +66,8 @@ export interface ISSOFlow extends ILoginFlow {
    type: "m.login.sso" | "m.login.cas";
    // eslint-disable-next-line camelcase
    identity_providers?: IIdentityProvider[];
-    [DELEGATED_OIDC_COMPATIBILITY.name]?: boolean;
-    [DELEGATED_OIDC_COMPATIBILITY.altName]?: boolean;
+    [OAUTH_AWARE_PREFERRED_FLOW_FIELD.name]?: boolean;
+    [OAUTH_AWARE_PREFERRED_FLOW_FIELD.altName]?: boolean;
 }

 export enum IdentityProviderBrand {
@@ -138,6 +138,7 @@ export enum EventType {
    PushRules = "m.push_rules",
    Direct = "m.direct",
    IgnoredUserList = "m.ignored_user_list",
+    InvitePermissionConfig = "m.invite_permission_config", // MSC4380

    // to_device events
    RoomKey = "m.room_key",
@@ -404,6 +405,8 @@ export interface AccountDataEvents extends SecretStorageAccountDataEvents {
    // Invites-ignorer events
    [POLICIES_ACCOUNT_EVENT_TYPE.name]: { [key: string]: any };
    [POLICIES_ACCOUNT_EVENT_TYPE.altName]: { [key: string]: any };
+
+    [EventType.InvitePermissionConfig]: { default_action?: string };
 }

 /**
@@ -1,24 +0,0 @@
-/*
-Copyright 2024 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import "oidc-client-ts";
-
-declare module "oidc-client-ts" {
-    interface OidcMetadata {
-        // Add the missing device_authorization_endpoint field to the OidcMetadata interface
-        device_authorization_endpoint?: string;
-    }
-}
@@ -6689,6 +6689,7 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa

        const params = {
            redirectUrl,
+            [SSO_ACTION_PARAM.stable!]: action,
            [SSO_ACTION_PARAM.unstable!]: action,
        };

@@ -6936,13 +6937,23 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
    /**
     * Upgrades a room to a new protocol version
     * @param newVersion - The target version to upgrade to
+     * @param additionalCreators - an optional list of user IDs of users who
+     *        should have the same permissions as the user performing the
+     *        upgrade
     * @returns Promise which resolves: Object with key 'replacement_room'
     * @returns Rejects: with an error response.
     */
-    public upgradeRoom(roomId: string, newVersion: string): Promise<{ replacement_room: string }> {
+    public upgradeRoom(
+        roomId: string,
+        newVersion: string,
+        additionalCreators?: string[],
+    ): Promise<{ replacement_room: string }> {
        // eslint-disable-line camelcase
        const path = utils.encodeUri("/rooms/$roomId/upgrade", { $roomId: roomId });
-        return this.http.authedRequest(Method.Post, path, undefined, { new_version: newVersion });
+        return this.http.authedRequest(Method.Post, path, undefined, {
+            new_version: newVersion,
+            additional_creators: additionalCreators,
+        });
    }

    /**
@@ -8826,21 +8837,21 @@ export class MatrixClient extends TypedEventEmitter<EmittedEvents, ClientEventHa
    }

    /**
-     * Discover and validate delegated auth configuration
-     * - delegated auth issuer openid-configuration is reachable
-     * - delegated auth issuer openid-configuration is configured correctly for us
+     * Discover and validate the auth metadata for the OAuth 2.0 API.
+     *
     * Fetches /auth_metadata falling back to legacy implementation using /auth_issuer followed by
     * https://oidc-issuer.example.com/.well-known/openid-configuration and other files linked therein.
-     * When successful, validated metadata is returned
+     * When successful, validated metadata is returned.
+     *
     * @returns validated authentication metadata and optionally signing keys
     * @throws when delegated auth config is invalid or unreachable
-     * @experimental - part of MSC2965
     */
    public async getAuthMetadata(): Promise<OidcClientConfig> {
        let authMetadata: unknown | undefined;
        try {
+            const useStable = await this.isVersionSupported("v1.15");
            authMetadata = await this.http.request<unknown>(Method.Get, "/auth_metadata", undefined, undefined, {
-                prefix: ClientPrefix.Unstable + "/org.matrix.msc2965",
+                prefix: useStable ? ClientPrefix.V1 : ClientPrefix.Unstable + "/org.matrix.msc2965",
            });
        } catch (e) {
            if (e instanceof MatrixError && e.errcode === "M_UNRECOGNIZED") {
@@ -38,6 +38,7 @@ import {
    type SendDelayedEventRequestOpts,
    type SendDelayedEventResponse,
    UpdateDelayedEventAction,
+    isSendDelayedEventRequestOpts,
 } from "./@types/requests.ts";
 import { EventType, type StateEvents } from "./@types/event.ts";
 import { logger } from "./logger.ts";
@@ -56,7 +57,7 @@ import { ConnectionError, MatrixError } from "./http-api/errors.ts";
 import { User } from "./models/user.ts";
 import { type Room } from "./models/room.ts";
 import { type ToDeviceBatch, type ToDevicePayload } from "./models/ToDeviceMessage.ts";
-import { MapWithDefault, recursiveMapToObject } from "./utils.ts";
+import { MapWithDefault, type QueryDict, recursiveMapToObject } from "./utils.ts";
 import { type EmptyObject, TypedEventEmitter, UnsupportedDelayedEventsEndpointError } from "./matrix.ts";

 interface IStateEventRequest {
@@ -122,6 +123,20 @@ export interface ICapabilities {
     * @defaultValue false
     */
    updateDelayedEvents?: boolean;
+
+    /**
+     * Whether this client needs to be able to send sticky events.
+     * @experimental Part of MSC4354 & MSC4407
+     * @defaultValue false
+     */
+    sendSticky?: boolean;
+
+    /**
+     * Whether this client needs to be able to receive sticky events.
+     * @experimental Part of MSC4354 & MSC4407
+     * @defaultValue false
+     */
+    receiveSticky?: boolean;
 }

 export enum RoomWidgetClientEvent {
@@ -197,54 +212,7 @@ export class RoomWidgetClient extends MatrixClient {
              )
            : Promise.resolve();

-        // Request capabilities for the functionality this client needs to support
-        if (
-            capabilities.sendEvent?.length ||
-            capabilities.receiveEvent?.length ||
-            capabilities.sendMessage === true ||
-            (Array.isArray(capabilities.sendMessage) && capabilities.sendMessage.length) ||
-            capabilities.receiveMessage === true ||
-            (Array.isArray(capabilities.receiveMessage) && capabilities.receiveMessage.length) ||
-            capabilities.sendState?.length ||
-            capabilities.receiveState?.length
-        ) {
-            widgetApi.requestCapabilityForRoomTimeline(roomId);
-        }
-        capabilities.sendEvent?.forEach((eventType) => widgetApi.requestCapabilityToSendEvent(eventType));
-        capabilities.receiveEvent?.forEach((eventType) => widgetApi.requestCapabilityToReceiveEvent(eventType));
-        if (capabilities.sendMessage === true) {
-            widgetApi.requestCapabilityToSendMessage();
-        } else if (Array.isArray(capabilities.sendMessage)) {
-            capabilities.sendMessage.forEach((msgType) => widgetApi.requestCapabilityToSendMessage(msgType));
-        }
-        if (capabilities.receiveMessage === true) {
-            widgetApi.requestCapabilityToReceiveMessage();
-        } else if (Array.isArray(capabilities.receiveMessage)) {
-            capabilities.receiveMessage.forEach((msgType) => widgetApi.requestCapabilityToReceiveMessage(msgType));
-        }
-        capabilities.sendState?.forEach(({ eventType, stateKey }) =>
-            widgetApi.requestCapabilityToSendState(eventType, stateKey),
-        );
-        capabilities.receiveState?.forEach(({ eventType, stateKey }) =>
-            widgetApi.requestCapabilityToReceiveState(eventType, stateKey),
-        );
-        capabilities.sendToDevice?.forEach((eventType) => widgetApi.requestCapabilityToSendToDevice(eventType));
-        capabilities.receiveToDevice?.forEach((eventType) => widgetApi.requestCapabilityToReceiveToDevice(eventType));
-        if (
-            capabilities.sendDelayedEvents &&
-            (capabilities.sendEvent?.length ||
-                capabilities.sendMessage === true ||
-                (Array.isArray(capabilities.sendMessage) && capabilities.sendMessage.length) ||
-                capabilities.sendState?.length)
-        ) {
-            widgetApi.requestCapability(MatrixCapabilities.MSC4157SendDelayedEvent);
-        }
-        if (capabilities.updateDelayedEvents) {
-            widgetApi.requestCapability(MatrixCapabilities.MSC4157UpdateDelayedEvent);
-        }
-        if (capabilities.turnServers) {
-            widgetApi.requestCapability(MatrixCapabilities.MSC3846TurnServers);
-        }
+        this.requestInitialCapabilities(capabilities, roomId);

        widgetApi.on(`action:${WidgetApiToWidgetAction.SendEvent}`, this.onEvent);
        widgetApi.on(`action:${WidgetApiToWidgetAction.SendToDevice}`, this.onToDevice);
@@ -260,10 +228,70 @@ export class RoomWidgetClient extends MatrixClient {
        if (sendContentLoaded) widgetApi.sendContentLoaded();
    }

+    private requestInitialCapabilities(capabilities: ICapabilities, roomId: string): void {
+        // Request capabilities for the functionality this client needs to support
+        if (
+            capabilities.sendEvent?.length ||
+            capabilities.receiveEvent?.length ||
+            capabilities.sendMessage === true ||
+            (Array.isArray(capabilities.sendMessage) && capabilities.sendMessage.length) ||
+            capabilities.receiveMessage === true ||
+            (Array.isArray(capabilities.receiveMessage) && capabilities.receiveMessage.length) ||
+            capabilities.sendState?.length ||
+            capabilities.receiveState?.length
+        ) {
+            this.widgetApi.requestCapabilityForRoomTimeline(roomId);
+        }
+        capabilities.sendEvent?.forEach((eventType) => this.widgetApi.requestCapabilityToSendEvent(eventType));
+        capabilities.receiveEvent?.forEach((eventType) => this.widgetApi.requestCapabilityToReceiveEvent(eventType));
+        if (capabilities.sendMessage === true) {
+            this.widgetApi.requestCapabilityToSendMessage();
+        } else if (Array.isArray(capabilities.sendMessage)) {
+            capabilities.sendMessage.forEach((msgType) => this.widgetApi.requestCapabilityToSendMessage(msgType));
+        }
+        if (capabilities.receiveMessage === true) {
+            this.widgetApi.requestCapabilityToReceiveMessage();
+        } else if (Array.isArray(capabilities.receiveMessage)) {
+            capabilities.receiveMessage.forEach((msgType) => this.widgetApi.requestCapabilityToReceiveMessage(msgType));
+        }
+        capabilities.sendState?.forEach(({ eventType, stateKey }) =>
+            this.widgetApi.requestCapabilityToSendState(eventType, stateKey),
+        );
+        capabilities.receiveState?.forEach(({ eventType, stateKey }) =>
+            this.widgetApi.requestCapabilityToReceiveState(eventType, stateKey),
+        );
+        capabilities.sendToDevice?.forEach((eventType) => this.widgetApi.requestCapabilityToSendToDevice(eventType));
+        capabilities.receiveToDevice?.forEach((eventType) =>
+            this.widgetApi.requestCapabilityToReceiveToDevice(eventType),
+        );
+        if (
+            capabilities.sendDelayedEvents &&
+            (capabilities.sendEvent?.length ||
+                capabilities.sendMessage === true ||
+                (Array.isArray(capabilities.sendMessage) && capabilities.sendMessage.length) ||
+                capabilities.sendState?.length)
+        ) {
+            this.widgetApi.requestCapability(MatrixCapabilities.MSC4157SendDelayedEvent);
+        }
+        if (capabilities.updateDelayedEvents) {
+            this.widgetApi.requestCapability(MatrixCapabilities.MSC4157UpdateDelayedEvent);
+        }
+        if (capabilities.sendSticky) {
+            this.widgetApi.requestCapability(MatrixCapabilities.MSC4407SendStickyEvent);
+        }
+        if (capabilities.receiveSticky) {
+            this.widgetApi.requestCapability(MatrixCapabilities.MSC4407ReceiveStickyEvent);
+        }
+        if (capabilities.turnServers) {
+            this.widgetApi.requestCapability(MatrixCapabilities.MSC3846TurnServers);
+        }
+    }
+
    public async supportUpdateState(): Promise<boolean> {
        return (await this.widgetApi.getClientVersions()).includes(UnstableApiVersion.MSC2762_UPDATE_STATE);
    }

+    private readonly syncApiResolver = Promise.withResolvers<void>();
    public async startClient(opts: IStartClientOpts = {}): Promise<void> {
        this.lifecycle = new AbortController();

@@ -282,6 +310,7 @@ export class RoomWidgetClient extends MatrixClient {
        } else {
            this.syncApi = new SyncApi(this, opts, this.buildSyncApiOptions());
        }
+        this.syncApiResolver.resolve();

        this.room = this.syncApi.createRoom(this.roomId);
        this.store.storeRoom(this.room);
@@ -346,17 +375,41 @@ export class RoomWidgetClient extends MatrixClient {
        throw new Error(`Unknown room: ${roomIdOrAlias}`);
    }

-    protected async encryptAndSendEvent(room: Room, event: MatrixEvent): Promise<ISendEventResponse>;
+    protected async encryptAndSendEvent(
+        room: Room,
+        event: MatrixEvent,
+        queryDict?: QueryDict,
+    ): Promise<ISendEventResponse>;
    protected async encryptAndSendEvent(
        room: Room,
        event: MatrixEvent,
        delayOpts: SendDelayedEventRequestOpts,
-    ): Promise<SendDelayedEventResponse>;
+        queryDict?: QueryDict,
+    ): Promise<ISendEventResponse>;
    protected async encryptAndSendEvent(
        room: Room,
        event: MatrixEvent,
-        delayOpts?: SendDelayedEventRequestOpts,
+        delayOptsOrQuery?: SendDelayedEventRequestOpts | QueryDict,
+        queryDict?: QueryDict,
    ): Promise<ISendEventResponse | SendDelayedEventResponse> {
+        let queryOpts = queryDict;
+        let delayOpts: SendDelayedEventRequestOpts | undefined;
+        if (delayOptsOrQuery && isSendDelayedEventRequestOpts(delayOptsOrQuery)) {
+            delayOpts = delayOptsOrQuery;
+        } else if (!queryOpts) {
+            queryOpts = delayOptsOrQuery;
+        }
+
+        const stickyDurationMs = queryOpts?.["org.matrix.msc4354.sticky_duration_ms"];
+        if (stickyDurationMs !== undefined && typeof stickyDurationMs !== "number") {
+            throw new Error("Sticky duration must be a number when defined");
+        }
+        // This is save since we just checked that above
+        // We need the additional as assertion for the EW linter to be happy.
+        // It is not capable of implying the type based on the throw if `stickyDurationMs !== undefined && typeof stickyDurationMs !== "number"`
+        // above
+        const stickyDurationMsAsNumber: number | undefined = stickyDurationMs as number | undefined;
+
        // We need to extend the content with the redacts parameter
        // The js sdk uses event.redacts but the widget api uses event.content.redacts
        // This will be converted back to event.redacts in the widget driver.
@@ -374,6 +427,7 @@ export class RoomWidgetClient extends MatrixClient {
                    room.roomId,
                    "delay" in delayOpts ? delayOpts.delay : undefined,
                    "parent_delay_id" in delayOpts ? delayOpts.parent_delay_id : undefined,
+                    stickyDurationMsAsNumber,
                )
                .catch(timeoutToConnectionError);
            return this.validateSendDelayedEventResponse(response);
@@ -386,7 +440,7 @@ export class RoomWidgetClient extends MatrixClient {
        let response: ISendEventFromWidgetResponseData;
        try {
            response = await this.widgetApi
-                .sendRoomEvent(event.getType(), content, room.roomId)
+                .sendRoomEvent(event.getType(), content, room.roomId, undefined, undefined, stickyDurationMsAsNumber)
                .catch(timeoutToConnectionError);
        } catch (e) {
            this.updatePendingEventStatus(room, event, EventStatus.NOT_SENT);
@@ -683,7 +737,7 @@ export class RoomWidgetClient extends MatrixClient {

            // Only inject once we have update the txId
            await this.updateTxId(event);
-
+            await this.syncApiResolver.promise;
            if (this.syncApi instanceof SyncApi) {
                if (await this.supportUpdateState()) {
                    await this.syncApi.injectRoomEvents(this.room!, undefined, [], [event]);
@@ -704,6 +758,7 @@ export class RoomWidgetClient extends MatrixClient {
            }

            this.emit(ClientEvent.Event, event);
+            if (event.unstableStickyInfo !== undefined) this.room!._unstable_addStickyEvents([event]);
            this.setSyncState(SyncState.Syncing);
            logger.info(`Received event ${event.getId()} ${event.getType()}`);
        } else {
@@ -737,6 +792,7 @@ export class RoomWidgetClient extends MatrixClient {
                "received update_state widget action but the widget driver did not claim to support 'org.matrix.msc2762_update_state'",
            );
        }
+        await this.syncApiResolver.promise;
        for (const rawEvent of ev.detail.data.state) {
            // Verify the room ID matches, since it's possible for the client to
            // send us state updates from other rooms if this widget is always
@@ -372,12 +372,53 @@ export class CallMembership {
     */
    public get slotId(): string {
        const { kind, data } = this.membershipData;
+        if (data.application === "m.call") {
+            switch (kind) {
+                case "rtc":
+                    return data.slot_id;
+                case "session":
+                default: {
+                    const [application, id] = [this.application, data.call_id];
+
+                    // INFO_SLOT_ID_LEGACY_CASE  (search for all occurances of this INFO to get the full picture)
+                    // The spec got changed to use `"ROOM"` instead of `""` empyt string for the implicit default call.
+                    // State events still are sent with `""` however. To find other events that should end up in the same call,
+                    // we use the slotId.
+                    // Since the CallMembership is the public representation of a rtc.member event, we just pretend it is a
+                    // "ROOM" slotId/call_id.
+                    // This makes all the remote members work with just this simple trick.
+                    //
+                    // We of course now need to be careful when sending legacy events (state events)
+                    // They get a slotDescription containing "ROOM" since this is what we use starting at the time this comment
+                    // is commited.
+                    //
+                    // See the Other INFO_SLOT_ID_LEGACY_CASE comments to see where we revert back to "" just before sending the event.
+                    let compatibilityAdaptedId: string;
+                    if (id === "") {
+                        compatibilityAdaptedId = "ROOM";
+                        this.logger?.info("use slotId compat hack emptyString -> ROOM");
+                    } else {
+                        compatibilityAdaptedId = id;
+                    }
+                    return slotDescriptionToId({
+                        application,
+                        id: compatibilityAdaptedId,
+                    });
+                }
+            }
+        }
+
+        this.logger?.info("NOT using slotId compat hack emptyString -> ROOM");
+        // This is what the function should look like for any other application that did not
+        // go through a `""`=> `"ROOM"` rename
        switch (kind) {
            case "rtc":
                return data.slot_id;
            case "session":
-            default:
-                return slotDescriptionToId({ application: this.application, id: data.call_id });
+            default: {
+                const [application, id] = [this.application, data.call_id];
+                return slotDescriptionToId({ application, id });
+            }
        }
    }

@@ -26,13 +26,12 @@ import { CallMembership } from "./CallMembership.ts";
 import { RoomStateEvent } from "../models/room-state.ts";
 import { MembershipManager, StickyEventMembershipManager } from "./MembershipManager.ts";
 import { type CallMembershipIdentityParts, EncryptionManager, type IEncryptionManager } from "./EncryptionManager.ts";
-import { deepCompare, logDurationSync } from "../utils.ts";
+import { logDurationSync } from "../utils.ts";
 import type {
    Statistics,
    RTCNotificationType,
    Status,
    IRTCNotificationContent,
-    ICallNotifyContent,
    RTCCallIntent,
    Transport,
 } from "./types.ts";
@@ -81,7 +80,6 @@ export type MatrixRTCSessionEventHandlerMap = {
    [MatrixRTCSessionEvent.MembershipManagerError]: (error: unknown) => void;
    [MatrixRTCSessionEvent.DidSendCallNotification]: (
        notificationContentNew: { event_id: string } & IRTCNotificationContent,
-        notificationContentLegacy: { event_id: string } & ICallNotifyContent,
    ) => void;
 };

@@ -328,7 +326,7 @@ export class MatrixRTCSession extends TypedEventEmitter<
     */
    public static async sessionMembershipsForSlot(
        room: Pick<Room, "getLiveTimeline" | "roomId" | "hasMembershipState" | "_unstable_getStickyEvents">,
-        slotDescription: SlotDescription,
+        slotId: string,
        // default both true this implied we combine sticky and state events for the final call state
        // (prefer sticky events in case of a duplicate)
        options: SessionMembershipsForSlotOpts = DEFAULT_SESSION_MEMBERSHIPS_FOR_SLOT_OPTS,
@@ -339,7 +337,7 @@ export class MatrixRTCSession extends TypedEventEmitter<
        const callMemberships = await computeBackendIdentityAndVerifyMemberEvents(
            room,
            callMemberEvents,
-            slotDescription,
+            slotId,
            logger,
        );

@@ -713,20 +711,7 @@ export class MatrixRTCSession extends TypedEventEmitter<
        notificationType: RTCNotificationType,
        callIntent?: RTCCallIntent,
    ): void {
-        const sendLegacyNotificationEvent = async (): Promise<{
-            response: ISendEventResponse;
-            content: ICallNotifyContent;
-        }> => {
-            const content: ICallNotifyContent = {
-                "application": "m.call",
-                "m.mentions": { user_ids: [], room: true },
-                "notify_type": notificationType === "notification" ? "notify" : notificationType,
-                "call_id": this.callId!,
-            };
-            const response = await this.client.sendEvent(this.roomSubset.roomId, EventType.CallNotify, content);
-            return { response, content };
-        };
-        const sendNewNotificationEvent = async (): Promise<{
+        const sendNotificationEvent = async (): Promise<{
            response: ISendEventResponse;
            content: IRTCNotificationContent;
        }> => {
@@ -747,12 +732,11 @@ export class MatrixRTCSession extends TypedEventEmitter<
            return { response, content };
        };

-        void Promise.all([sendLegacyNotificationEvent(), sendNewNotificationEvent()])
-            .then(([legacy, newNotification]) => {
+        void sendNotificationEvent()
+            .then((notification) => {
                // Join event_id and origin event content
-                const legacyResult = { ...legacy.response, ...legacy.content };
-                const newResult = { ...newNotification.response, ...newNotification.content };
-                this.emit(MatrixRTCSessionEvent.DidSendCallNotification, newResult, legacyResult);
+                const newResult = { ...notification.response, ...notification.content };
+                this.emit(MatrixRTCSessionEvent.DidSendCallNotification, newResult);
            })
            .catch(([errorLegacy, errorNew]) =>
                this.logger.error("Failed to send call notification", errorLegacy, errorNew),
@@ -823,7 +807,7 @@ export class MatrixRTCSession extends TypedEventEmitter<

        this.memberships = await MatrixRTCSession.sessionMembershipsForSlot(
            this.room,
-            this.slotDescription,
+            slotDescriptionToId(this.slotDescription),
            this.calculateMembershipsOpts,
        );

@@ -873,7 +857,7 @@ export class MatrixRTCSession extends TypedEventEmitter<
 async function computeBackendIdentityAndVerifyMemberEvents(
    room: Pick<Room, "hasMembershipState">,
    callMemberEvents: MatrixEvent[],
-    slotDescription: SlotDescription,
+    slotId: string,
    logger: Logger,
 ): Promise<CallMembership[]> {
    const callMemberships: CallMembership[] = [];
@@ -897,7 +881,7 @@ async function computeBackendIdentityAndVerifyMemberEvents(
                logger,
            );

-            if (isValidMembership(membership, room, slotDescription, logger)) {
+            if (isValidMembership(membership, room, slotId, logger)) {
                callMemberships.push(membership);
            }
        } catch (e) {
@@ -930,12 +914,12 @@ function quickFilterNonRelevantContents(content: IContent, logger: Logger): bool
 function isValidMembership(
    membership: CallMembership,
    room: Pick<Room, "hasMembershipState">,
-    slotDescription: SlotDescription,
+    slotId: string,
    logger: Logger,
 ): boolean {
-    if (!deepCompare(membership.slotDescription, slotDescription)) {
+    if (membership.slotId !== slotId) {
        logger.info(
-            `Ignoring membership of user ${membership.userId} for a different slot:  ${JSON.stringify(membership.slotDescription)}`,
+            `Ignoring membership of user ${membership.userId} for a different slot:  user: ${JSON.stringify(membership.slotDescription)}, slotId: ${slotId})`,
        );
        return false;
    }
@@ -56,7 +56,7 @@ export class MatrixRTCSessionManager extends TypedEventEmitter<MatrixRTCSessionM
    public constructor(
        rootLogger: Logger,
        private client: MatrixClient,
-        private readonly slotDescription: SlotDescription = { application: "m.call", id: "" }, // Default to the Matrix Call application
+        private readonly slotDescription: SlotDescription = { application: "m.call", id: "ROOM" }, // Default to the Matrix Call application
    ) {
        super();
        this.logger = rootLogger.getChild("[MatrixRTCSessionManager]");
@@ -43,6 +43,7 @@ import {
    type IMembershipManager,
    type MembershipManagerEventHandlerMap,
 } from "./IMembershipManager.ts";
+import { isLivekitTransportConfig } from "./LivekitTransport.ts";

 /* MembershipActionTypes:
 On Join:  ───────────────┐   ┌───────────────(1)───────────┐
@@ -584,7 +585,7 @@ export class MembershipManager
        this.emit(MembershipManagerEvent.ProbablyLeft, this.state.probablyLeft);
    }

-    private setAndEmitDelayId(delayId?: string): void {
+    private setAndEmitDelayId(delayId: string | undefined): void {
        if (this.state.delayId === delayId) return;

        this.state.delayId = delayId;
@@ -654,6 +655,7 @@ export class MembershipManager
            ._unstable_sendScheduledDelayedEvent(delayId)
            .then(() => {
                this.state.hasMemberStateEvent = false;
+                this.setAndEmitDelayId(undefined);
                this.resetRateLimitCounter(MembershipActionType.SendScheduledDelayedLeaveEvent);

                return { replace: [] };
@@ -772,7 +774,12 @@ export class MembershipManager
     * which is not compatible with membershipID of session type member events. They have to be `${localUserId}:${localDeviceId}`
     */
    private makeMembershipStateKey(localUserId: string, localDeviceId: string): string {
-        const stateKey = `${localUserId}_${localDeviceId}_${this.slotDescription.application}${this.slotDescription.id}`;
+        // INFO_SLOT_ID_LEGACY_CASE  (search for all occurances of this INFO to get the full picture)
+        // Revert back to "" just for the state key (state keys are always legacy. we use sticky events for non legacy events)
+        const application = this.slotDescription.application;
+        const needsEmptyStringRoomFix = application === "m.call" && this.slotDescription.id === "ROOM";
+        const slotId = needsEmptyStringRoomFix ? "" : this.slotDescription.id;
+        const stateKey = `${localUserId}_${localDeviceId}_${application}${slotId}`;
        if (/^org\.matrix\.msc(3757|3779)\b/.exec(this.room.getVersion())) {
            return stateKey;
        } else {
@@ -785,6 +792,8 @@ export class MembershipManager
     */
    protected makeMyMembership(expires: number): SessionMembershipData | RtcMembershipData {
        const ownMembership = this.ownMembership;
+        const needsEmptyStringRoomFix =
+            this.slotDescription.application === "m.call" && this.slotDescription.id === "ROOM";

        const focusObjects =
            this.rtcTransport === undefined
@@ -798,7 +807,9 @@ export class MembershipManager
                  };
        return {
            "application": this.slotDescription.application,
-            "call_id": this.slotDescription.id,
+            // INFO_SLOT_ID_LEGACY_CASE  (search for all occurances of this INFO to get the full picture)
+            // Revert back to "" just for the sending the event.
+            "call_id": needsEmptyStringRoomFix ? "" : this.slotDescription.id,
            "scope": "m.room",
            "device_id": this.deviceId,
            // DO NOT use this.memberId here since that is the state key (using application...)
@@ -1091,6 +1102,7 @@ export class StickyEventMembershipManager extends MembershipManager {
    protected makeMyMembership(expires: number): SessionMembershipData | RtcMembershipData {
        const ownMembership = this.ownMembership;

+        const livekitTransport = isLivekitTransportConfig(this.rtcTransport) ? this.rtcTransport : undefined;
        const relationObject = ownMembership?.eventId
            ? { "m.relation": { rel_type: RelationType.Reference, event_id: ownMembership?.eventId } }
            : {};
@@ -1100,7 +1112,11 @@ export class StickyEventMembershipManager extends MembershipManager {
                ...(this.callIntent ? { "m.call.intent": this.callIntent } : {}),
            },
            slot_id: slotDescriptionToId(this.slotDescription),
-            rtc_transports: this.rtcTransport ? [this.rtcTransport] : [],
+            // Make sure we do not add the alias to the transport.
+            // It is not needed in matrix2.0. The additional session information will be used to find the right alias on the sfu.
+            rtc_transports: livekitTransport
+                ? [{ type: livekitTransport.type, livekit_service_url: livekitTransport.livekit_service_url }]
+                : [],
            member: { device_id: this.deviceId, user_id: this.userId, id: this.memberId },
            versions: [],
            ...relationObject,
@@ -38,7 +38,6 @@ export type BeaconEventHandlerMap = {
    [BeaconEvent.LivenessChange]: (isLive: boolean, beacon: Beacon) => void;
    [BeaconEvent.Destroy]: (beaconIdentifier: string) => void;
    [BeaconEvent.LocationUpdate]: (locationState: BeaconLocationState) => void;
-    [BeaconEvent.Destroy]: (beaconIdentifier: string) => void;
 };

 export const isTimestampInDuration = (startTimestamp: number, durationMs: number, timestamp: number): boolean =>
@@ -52,7 +52,34 @@ interface OidcRegistrationRequestBody {
    application_type: "web" | "native";
 }

-export const DEVICE_CODE_SCOPE = "urn:ietf:params:oauth:grant-type:device_code";
+/**
+ * The OAuth 2.0 grant types that are defined for Matrix in https://spec.matrix.org/v1.17/client-server-api/#grant-types
+ */
+export enum OAuthGrantType {
+    /**
+     * See https://spec.matrix.org/v1.17/client-server-api/#authorization-code-grant
+     */
+    AuthorizationCode = "authorization_code",
+    /**
+     * https://spec.matrix.org/v1.17/client-server-api/#refresh-token-grant
+     */
+    RefreshToken = "refresh_token",
+    /**
+     * The OAuth 2.0 Device Authorization Grant type identifier as per
+     * https://www.rfc-editor.org/rfc/rfc8628.html#section-7.2 from
+     * [MSC4341](https://github.com/matrix-org/matrix-spec-proposals/pull/4341).
+     *
+     * @experimental Note that this is UNSTABLE and may have breaking changes without notice.
+     */
+    DeviceAuthorization = "urn:ietf:params:oauth:grant-type:device_code",
+}
+
+/**
+ * The name "scope" is a misnomer here as it is actually a "grant type".
+ *
+ * @deprecated use `OAuthGrantType.DeviceAuthorization` instead
+ */
+export const DEVICE_CODE_SCOPE: string = OAuthGrantType.DeviceAuthorization;

 // Check that URIs have a common base, as per the MSC2966 definition
 const urlHasCommonBase = (base: URL, urlStr?: string): boolean => {
@@ -79,7 +106,7 @@ export const registerOidcClient = async (
        throw new Error(OidcError.DynamicRegistrationNotSupported);
    }

-    const grantTypes: NonEmptyArray<string> = ["authorization_code", "refresh_token"];
+    const grantTypes: NonEmptyArray<string> = [OAuthGrantType.AuthorizationCode, OAuthGrantType.RefreshToken];
    if (grantTypes.some((scope) => !delegatedAuthConfig.grant_types_supported.includes(scope))) {
        throw new Error(OidcError.DynamicRegistrationNotSupported);
    }
@@ -19,13 +19,17 @@ import { type IdTokenClaims, type OidcMetadata, type SigninResponse } from "oidc

 import { logger } from "../logger.ts";
 import { OidcError } from "./error.ts";
+import { OAuthGrantType } from "./index.ts";

 /**
- * Metadata from OIDC authority discovery
+ * Metadata from OAuth 2.0 client authentication API as per
+ * https://spec.matrix.org/v1.17/client-server-api/#get_matrixclientv1auth_metadata
 * With validated properties required in type
 */
 export type ValidatedAuthMetadata = Partial<OidcMetadata> &
    Pick<
+        // These values are from [RFC8414](https://datatracker.ietf.org/doc/html/rfc8414#section-2)
+        // so we can reuse the OidcMetadata definitions from oidc-client-ts
        OidcMetadata,
        | "issuer"
        | "authorization_endpoint"
@@ -35,12 +39,14 @@ export type ValidatedAuthMetadata = Partial<OidcMetadata> &
        | "grant_types_supported"
        | "code_challenge_methods_supported"
    > & {
-        // MSC2965 extensions to the OIDC spec
+        // These values aren't part of RFC8414 so we add them here
+        // Account management fields from stable MSC4191:
        account_management_uri?: string;
        account_management_actions_supported?: string[];
-        // The OidcMetadata type from oidc-client-ts does not include `prompt_values_supported`
-        // even though it is part of the OIDC spec
+        // Value from [Initiating User Registration via OpenID Connect](https://openid.net/specs/openid-connect-prompt-create-1_0.html):
        prompt_values_supported?: string[];
+        // Experimental MSC4341 value from [RFC8628](https://datatracker.ietf.org/doc/html/rfc8628#section-4):
+        device_authorization_endpoint?: string;
    };

 const isRecord = (value: unknown): value is Record<string, unknown> =>
@@ -79,9 +85,9 @@ const requiredArrayValue = (wellKnown: Record<string, unknown>, key: string, val
 };

 /**
- * Validates issuer `.well-known/openid-configuration`
- * As defined in RFC5785 https://openid.net/specs/openid-connect-discovery-1_0.html
- * validates that OP is compatible with Element's OIDC flow
+ * Validates OAuth 2.0 auth metadata as defined by
+ * https://spec.matrix.org/v1.17/client-server-api/#get_matrixclientv1auth_metadata
+ * is compatible with Element's OAuth/OIDC flow
 * @param authMetadata - json object
 * @returns valid issuer config
 * @throws Error - when issuer config is not found or is invalid
@@ -102,7 +108,7 @@ export const validateAuthMetadata = (authMetadata: unknown): ValidatedAuthMetada
        optionalStringProperty(authMetadata, "device_authorization_endpoint"),
        optionalStringArrayProperty(authMetadata, "account_management_actions_supported"),
        requiredArrayValue(authMetadata, "response_types_supported", "code"),
-        requiredArrayValue(authMetadata, "grant_types_supported", "authorization_code"),
+        requiredArrayValue(authMetadata, "grant_types_supported", OAuthGrantType.AuthorizationCode),
        requiredArrayValue(authMetadata, "code_challenge_methods_supported", "S256"),
        optionalStringArrayProperty(authMetadata, "prompt_values_supported"),
    ].some((isValid) => !isValid);
@@ -27,7 +27,7 @@ import { logger } from "../logger.ts";
 import { type MSC4108SecureChannel } from "./channels/MSC4108SecureChannel.ts";
 import { MatrixError } from "../http-api/index.ts";
 import { sleep } from "../utils.ts";
-import { DEVICE_CODE_SCOPE, type OidcClientConfig } from "../oidc/index.ts";
+import { OAuthGrantType, type OidcClientConfig } from "../oidc/index.ts";
 import { type CryptoApi } from "../crypto-api/index.ts";

 /**
@@ -194,7 +194,7 @@ export class MSC4108SignInWithQR {
                    logger.error("Failed to discover OIDC metadata", e);
                }

-                if (oidcClientConfig?.grant_types_supported.includes(DEVICE_CODE_SCOPE)) {
+                if (oidcClientConfig?.grant_types_supported.includes(OAuthGrantType.DeviceAuthorization)) {
                    await this.send<ProtocolsPayload>({
                        type: PayloadType.Protocols,
                        protocols: ["device_authorization_grant"],
@@ -262,7 +262,9 @@ export class MSC4108RendezvousSession {

        if (!this.url) return;
        try {
-            await this.fetch(this.url, { method: Method.Delete });
+            const method = Method.Delete;
+            logger.info(`=> ${method} ${this.url}`);
+            await this.fetch(this.url, { method });
        } catch (e) {
            logger.warn(e);
        }
@@ -26,7 +26,7 @@ limitations under the License.
 import type { SyncCryptoCallbacks } from "./common-crypto/CryptoBackend.ts";
 import { User } from "./models/user.ts";
 import { NotificationCountType, Room, RoomEvent } from "./models/room.ts";
-import { deepCopy, noUnsafeEventProps, promiseMapSeries, unsafeProp } from "./utils.ts";
+import { deepCopy, noUnsafeEventProps, unsafeProp } from "./utils.ts";
 import { Filter } from "./filter.ts";
 import { EventTimeline } from "./models/event-timeline.ts";
 import { type Logger } from "./logger.ts";
@@ -1188,312 +1188,326 @@ export class SyncApi {
        this.notifEvents = [];

        // Handle invites
-        await promiseMapSeries(inviteRooms, async (inviteObj) => {
-            const room = inviteObj.room;
-            const stateEvents = this.mapSyncEventsFormat(inviteObj.invite_state, room);
+        await Promise.all(
+            inviteRooms.map(async (inviteObj) => {
+                const room = inviteObj.room;
+                const stateEvents = this.mapSyncEventsFormat(inviteObj.invite_state, room);

-            await this.injectRoomEvents(room, stateEvents, undefined);
+                await this.injectRoomEvents(room, stateEvents, undefined);

-            if (inviteObj.isBrandNewRoom) {
-                room.recalculate();
-                client.store.storeRoom(room);
-                client.emit(ClientEvent.Room, room);
-            } else {
-                // Update room state for invite->reject->invite cycles
-                room.recalculate();
-            }
-            stateEvents.forEach(function (e) {
-                client.emit(ClientEvent.Event, e);
-            });
-        });
+                if (inviteObj.isBrandNewRoom) {
+                    room.recalculate();
+                    client.store.storeRoom(room);
+                    client.emit(ClientEvent.Room, room);
+                } else {
+                    // Update room state for invite->reject->invite cycles
+                    room.recalculate();
+                }
+                stateEvents.forEach(function (e) {
+                    client.emit(ClientEvent.Event, e);
+                });
+            }),
+        );

        // Handle joins
-        await promiseMapSeries(joinRooms, async (joinObj) => {
-            const room = joinObj.room;
-            const stateEvents = this.mapSyncEventsFormat(joinObj.state, room);
-            const stateAfterEvents = this.mapSyncEventsFormat(joinObj["org.matrix.msc4222.state_after"], room);
-            // Prevent events from being decrypted ahead of time
-            // this helps large account to speed up faster
-            // room::decryptCriticalEvent is in charge of decrypting all the events
-            // required for a client to function properly
-            const timelineEvents = this.mapSyncEventsFormat(joinObj.timeline, room, false);
-            const ephemeralEvents = this.mapSyncEventsFormat(joinObj.ephemeral);
-            const accountDataEvents = this.mapSyncEventsFormat(joinObj.account_data);
-            const stickyEvents = this.mapSyncEventsFormat(joinObj.msc4354_sticky);
+        await Promise.all(
+            joinRooms.map(async (joinObj) => {
+                const room = joinObj.room;
+                const stateEvents = this.mapSyncEventsFormat(joinObj.state, room);
+                const stateAfterEvents = this.mapSyncEventsFormat(joinObj["org.matrix.msc4222.state_after"], room);
+                // Prevent events from being decrypted ahead of time
+                // this helps large account to speed up faster
+                // room::decryptCriticalEvent is in charge of decrypting all the events
+                // required for a client to function properly
+                const timelineEvents = this.mapSyncEventsFormat(joinObj.timeline, room, false);
+                const ephemeralEvents = this.mapSyncEventsFormat(joinObj.ephemeral);
+                const accountDataEvents = this.mapSyncEventsFormat(joinObj.account_data);
+                const stickyEvents = this.mapSyncEventsFormat(joinObj.msc4354_sticky);

-            // If state_after is present, this is the events that form the state at the end of the timeline block and
-            // regular timeline events do *not* count towards state. If it's not present, then the state is formed by
-            // the state events plus the timeline events. Note mapSyncEventsFormat returns an empty array if the field
-            // is absent so we explicitly check the field on the original object.
-            const eventsFormingFinalState = joinObj["org.matrix.msc4222.state_after"]
-                ? stateAfterEvents
-                : stateEvents.concat(timelineEvents);
+                // If state_after is present, this is the events that form the state at the end of the timeline block and
+                // regular timeline events do *not* count towards state. If it's not present, then the state is formed by
+                // the state events plus the timeline events. Note mapSyncEventsFormat returns an empty array if the field
+                // is absent so we explicitly check the field on the original object.
+                const eventsFormingFinalState = joinObj["org.matrix.msc4222.state_after"]
+                    ? stateAfterEvents
+                    : stateEvents.concat(timelineEvents);

-            const encrypted = this.isRoomEncrypted(room, eventsFormingFinalState);
-            // We store the server-provided value first so it's correct when any of the events fire.
-            if (joinObj.unread_notifications) {
-                /**
-                 * We track unread notifications ourselves in encrypted rooms, so don't
-                 * bother setting it here. We trust our calculations better than the
-                 * server's for this case, and therefore will assume that our non-zero
-                 * count is accurate.
-                 * XXX: this is known faulty as the push rule for `.m.room.encrypted` may be disabled so server
-                 * may issue notification counts of 0 which we wrongly trust.
-                 * https://github.com/matrix-org/matrix-spec-proposals/pull/2654 would fix this
-                 *
-                 * @see import("./client").fixNotificationCountOnDecryption
-                 */
-                if (!encrypted || joinObj.unread_notifications.notification_count === 0) {
-                    // In an encrypted room, if the room has notifications enabled then it's typical for
-                    // the server to flag all new messages as notifying. However, some push rules calculate
-                    // events as ignored based on their event contents (e.g. ignoring msgtype=m.notice messages)
-                    // so we want to calculate this figure on the client in all cases.
-                    room.setUnreadNotificationCount(
-                        NotificationCountType.Total,
-                        joinObj.unread_notifications.notification_count ?? 0,
-                    );
-                }
-
-                if (!encrypted || room.getUnreadNotificationCount(NotificationCountType.Highlight) <= 0) {
-                    // If the locally stored highlight count is zero, use the server provided value.
-                    room.setUnreadNotificationCount(
-                        NotificationCountType.Highlight,
-                        joinObj.unread_notifications.highlight_count ?? 0,
-                    );
-                }
-            }
-
-            const unreadThreadNotifications =
-                joinObj[UNREAD_THREAD_NOTIFICATIONS.name] ?? joinObj[UNREAD_THREAD_NOTIFICATIONS.altName!];
-            if (unreadThreadNotifications) {
-                // This mirrors the logic above for rooms: take the *total* notification count from
-                // the server for unencrypted rooms or is it's zero. Any threads not present in this
-                // object implicitly have zero notifications, so start by clearing the total counts
-                // for all such threads.
-                room.resetThreadUnreadNotificationCountFromSync(Object.keys(unreadThreadNotifications));
-                for (const [threadId, unreadNotification] of Object.entries(unreadThreadNotifications)) {
-                    if (!encrypted || unreadNotification.notification_count === 0) {
-                        room.setThreadUnreadNotificationCount(
-                            threadId,
+                const encrypted = this.isRoomEncrypted(room, eventsFormingFinalState);
+                // We store the server-provided value first so it's correct when any of the events fire.
+                if (joinObj.unread_notifications) {
+                    /**
+                     * We track unread notifications ourselves in encrypted rooms, so don't
+                     * bother setting it here. We trust our calculations better than the
+                     * server's for this case, and therefore will assume that our non-zero
+                     * count is accurate.
+                     * XXX: this is known faulty as the push rule for `.m.room.encrypted` may be disabled so server
+                     * may issue notification counts of 0 which we wrongly trust.
+                     * https://github.com/matrix-org/matrix-spec-proposals/pull/2654 would fix this
+                     *
+                     * @see import("./client").fixNotificationCountOnDecryption
+                     */
+                    if (!encrypted || joinObj.unread_notifications.notification_count === 0) {
+                        // In an encrypted room, if the room has notifications enabled then it's typical for
+                        // the server to flag all new messages as notifying. However, some push rules calculate
+                        // events as ignored based on their event contents (e.g. ignoring msgtype=m.notice messages)
+                        // so we want to calculate this figure on the client in all cases.
+                        room.setUnreadNotificationCount(
                            NotificationCountType.Total,
-                            unreadNotification.notification_count ?? 0,
+                            joinObj.unread_notifications.notification_count ?? 0,
                        );
                    }

-                    const hasNoNotifications =
-                        room.getThreadUnreadNotificationCount(threadId, NotificationCountType.Highlight) <= 0;
-                    if (!encrypted || (encrypted && hasNoNotifications)) {
-                        room.setThreadUnreadNotificationCount(
-                            threadId,
+                    if (!encrypted || room.getUnreadNotificationCount(NotificationCountType.Highlight) <= 0) {
+                        // If the locally stored highlight count is zero, use the server provided value.
+                        room.setUnreadNotificationCount(
                            NotificationCountType.Highlight,
-                            unreadNotification.highlight_count ?? 0,
+                            joinObj.unread_notifications.highlight_count ?? 0,
                        );
                    }
                }
-            } else {
-                room.resetThreadUnreadNotificationCountFromSync();
-            }

-            joinObj.timeline = joinObj.timeline || ({} as ITimeline);
+                const unreadThreadNotifications =
+                    joinObj[UNREAD_THREAD_NOTIFICATIONS.name] ?? joinObj[UNREAD_THREAD_NOTIFICATIONS.altName!];
+                if (unreadThreadNotifications) {
+                    // This mirrors the logic above for rooms: take the *total* notification count from
+                    // the server for unencrypted rooms or is it's zero. Any threads not present in this
+                    // object implicitly have zero notifications, so start by clearing the total counts
+                    // for all such threads.
+                    room.resetThreadUnreadNotificationCountFromSync(Object.keys(unreadThreadNotifications));
+                    for (const [threadId, unreadNotification] of Object.entries(unreadThreadNotifications)) {
+                        if (!encrypted || unreadNotification.notification_count === 0) {
+                            room.setThreadUnreadNotificationCount(
+                                threadId,
+                                NotificationCountType.Total,
+                                unreadNotification.notification_count ?? 0,
+                            );
+                        }

-            if (joinObj.isBrandNewRoom) {
-                // set the back-pagination token. Do this *before* adding any
-                // events so that clients can start back-paginating.
-                if (joinObj.timeline.prev_batch !== null) {
-                    room.getLiveTimeline().setPaginationToken(joinObj.timeline.prev_batch, EventTimeline.BACKWARDS);
-                }
-            } else if (joinObj.timeline.limited) {
-                let limited = true;
-
-                // we've got a limited sync, so we *probably* have a gap in the
-                // timeline, so should reset. But we might have been peeking or
-                // paginating and already have some of the events, in which
-                // case we just want to append any subsequent events to the end
-                // of the existing timeline.
-                //
-                // This is particularly important in the case that we already have
-                // *all* of the events in the timeline - in that case, if we reset
-                // the timeline, we'll end up with an entirely empty timeline,
-                // which we'll try to paginate but not get any new events (which
-                // will stop us linking the empty timeline into the chain).
-                //
-                for (let i = timelineEvents.length - 1; i >= 0; i--) {
-                    const eventId = timelineEvents[i].getId()!;
-                    if (room.getTimelineForEvent(eventId)) {
-                        this.syncOpts.logger.debug(`Already have event ${eventId} in limited sync - not resetting`);
-                        limited = false;
-
-                        // we might still be missing some of the events before i;
-                        // we don't want to be adding them to the end of the
-                        // timeline because that would put them out of order.
-                        timelineEvents.splice(0, i);
-
-                        // XXX: there's a problem here if the skipped part of the
-                        // timeline modifies the state set in stateEvents, because
-                        // we'll end up using the state from stateEvents rather
-                        // than the later state from timelineEvents. We probably
-                        // need to wind stateEvents forward over the events we're
-                        // skipping.
-
-                        break;
+                        const hasNoNotifications =
+                            room.getThreadUnreadNotificationCount(threadId, NotificationCountType.Highlight) <= 0;
+                        if (!encrypted || (encrypted && hasNoNotifications)) {
+                            room.setThreadUnreadNotificationCount(
+                                threadId,
+                                NotificationCountType.Highlight,
+                                unreadNotification.highlight_count ?? 0,
+                            );
+                        }
                    }
-                }
-
-                if (limited) {
-                    room.resetLiveTimeline(
-                        joinObj.timeline.prev_batch,
-                        this.syncOpts.canResetEntireTimeline!(room.roomId)
-                            ? null
-                            : (syncEventData.oldSyncToken ?? null),
-                    );
-
-                    // We have to assume any gap in any timeline is
-                    // reason to stop incrementally tracking notifications and
-                    // reset the timeline.
-                    client.resetNotifTimelineSet();
-                }
-            }
-
-            // process any crypto events *before* emitting the RoomStateEvent events. This
-            // avoids a race condition if the application tries to send a message after the
-            // state event is processed, but before crypto is enabled, which then causes the
-            // crypto layer to complain.
-
-            if (this.syncOpts.cryptoCallbacks) {
-                for (const e of eventsFormingFinalState) {
-                    if (e.isState() && e.getType() === EventType.RoomEncryption && e.getStateKey() === "") {
-                        await this.syncOpts.cryptoCallbacks.onCryptoEvent(room, e);
-                    }
-                }
-            }
-
-            // Proactively decrypt state events: normally we decrypt on demand, but for state
-            // events we need them immediately, so we handle them here. Specifically, consumers
-            // (e.g. Element Web) expect state events to be unencrypted upon receipt.
-            for (const ev of timelineEvents.filter((ev) => ev.isState())) {
-                await this.client.decryptEventIfNeeded(ev);
-            }
-
-            try {
-                if ("org.matrix.msc4222.state_after" in joinObj) {
-                    await this.injectRoomEvents(
-                        room,
-                        undefined,
-                        stateAfterEvents,
-                        timelineEvents,
-                        syncEventData.fromCache,
-                    );
                } else {
-                    await this.injectRoomEvents(room, stateEvents, undefined, timelineEvents, syncEventData.fromCache);
+                    room.resetThreadUnreadNotificationCountFromSync();
                }
-            } catch (e) {
-                this.syncOpts.logger.error(`Failed to process events on room ${room.roomId}:`, e);
-            }

-            // set summary after processing events,
-            // because it will trigger a name calculation
-            // which needs the room state to be up to date
-            if (joinObj.summary) {
-                room.setSummary(joinObj.summary);
-            }
+                joinObj.timeline = joinObj.timeline || ({} as ITimeline);

-            // we deliberately don't add ephemeral events to the timeline
-            room.addEphemeralEvents(ephemeralEvents);
+                if (joinObj.isBrandNewRoom) {
+                    // set the back-pagination token. Do this *before* adding any
+                    // events so that clients can start back-paginating.
+                    if (joinObj.timeline.prev_batch !== null) {
+                        room.getLiveTimeline().setPaginationToken(joinObj.timeline.prev_batch, EventTimeline.BACKWARDS);
+                    }
+                } else if (joinObj.timeline.limited) {
+                    let limited = true;

-            // we deliberately don't add accountData to the timeline
-            room.addAccountData(accountDataEvents);
+                    // we've got a limited sync, so we *probably* have a gap in the
+                    // timeline, so should reset. But we might have been peeking or
+                    // paginating and already have some of the events, in which
+                    // case we just want to append any subsequent events to the end
+                    // of the existing timeline.
+                    //
+                    // This is particularly important in the case that we already have
+                    // *all* of the events in the timeline - in that case, if we reset
+                    // the timeline, we'll end up with an entirely empty timeline,
+                    // which we'll try to paginate but not get any new events (which
+                    // will stop us linking the empty timeline into the chain).
+                    //
+                    for (let i = timelineEvents.length - 1; i >= 0; i--) {
+                        const eventId = timelineEvents[i].getId()!;
+                        if (room.getTimelineForEvent(eventId)) {
+                            this.syncOpts.logger.debug(`Already have event ${eventId} in limited sync - not resetting`);
+                            limited = false;

-            // Sticky events primarily come via the `timeline` field, with the
-            // sticky info field marking them as sticky.
-            // If the sync is "gappy" (meaning it is skipping events to catch up) then
-            // sticky events will instead come down the sticky section.
-            // This ensures we collect sticky events from both places.
-            const stickyEventsAndStickyEventsFromTheTimeline = stickyEvents.concat(
-                timelineEvents.filter((e) => e.unstableStickyInfo !== undefined),
-            );
-            // Note: We calculate sticky events before emitting `.Room` as it's nice to have
-            // sticky events calculated and ready to go.
-            room._unstable_addStickyEvents(stickyEventsAndStickyEventsFromTheTimeline);
+                            // we might still be missing some of the events before i;
+                            // we don't want to be adding them to the end of the
+                            // timeline because that would put them out of order.
+                            timelineEvents.splice(0, i);

-            room.recalculate();
-            if (joinObj.isBrandNewRoom) {
-                client.store.storeRoom(room);
-                client.emit(ClientEvent.Room, room);
-            }
+                            // XXX: there's a problem here if the skipped part of the
+                            // timeline modifies the state set in stateEvents, because
+                            // we'll end up using the state from stateEvents rather
+                            // than the later state from timelineEvents. We probably
+                            // need to wind stateEvents forward over the events we're
+                            // skipping.

-            this.processEventsForNotifs(room, timelineEvents);
+                            break;
+                        }
+                    }

-            const emitEvent = (e: MatrixEvent): boolean => client.emit(ClientEvent.Event, e);
-            // this fires a couple of times for some events. (eg state events are in the timeline and the state)
-            // should this get a sync section as an additional event emission param (e, syncSection))?
-            stateEvents.forEach(emitEvent);
-            timelineEvents.forEach(emitEvent);
-            ephemeralEvents.forEach(emitEvent);
-            accountDataEvents.forEach(emitEvent);
-            stickyEvents
-                .filter(
-                    (stickyEvent) =>
-                        // This is highly unlikey, but in the case where a sticky event
-                        // has appeared in the timeline AND the sticky section, we only
-                        // want to emit the event once.
-                        !timelineEvents.some((timelineEvent) => timelineEvent.getId() === stickyEvent.getId()),
-                )
-                .forEach(emitEvent);
-            // Decrypt only the last message in all rooms to make sure we can generate a preview
-            // And decrypt all events after the recorded read receipt to ensure an accurate
-            // notification count
-            room.decryptCriticalEvents();
-        });
+                    if (limited) {
+                        room.resetLiveTimeline(
+                            joinObj.timeline.prev_batch,
+                            this.syncOpts.canResetEntireTimeline!(room.roomId)
+                                ? null
+                                : (syncEventData.oldSyncToken ?? null),
+                        );
+
+                        // We have to assume any gap in any timeline is
+                        // reason to stop incrementally tracking notifications and
+                        // reset the timeline.
+                        client.resetNotifTimelineSet();
+                    }
+                }
+
+                // process any crypto events *before* emitting the RoomStateEvent events. This
+                // avoids a race condition if the application tries to send a message after the
+                // state event is processed, but before crypto is enabled, which then causes the
+                // crypto layer to complain.
+
+                if (this.syncOpts.cryptoCallbacks) {
+                    for (const e of eventsFormingFinalState) {
+                        if (e.isState() && e.getType() === EventType.RoomEncryption && e.getStateKey() === "") {
+                            await this.syncOpts.cryptoCallbacks.onCryptoEvent(room, e);
+                        }
+                    }
+                }
+
+                // Proactively decrypt state events: normally we decrypt on demand, but for state
+                // events we need them immediately, so we handle them here. Specifically, consumers
+                // (e.g. Element Web) expect state events to be unencrypted upon receipt.
+                for (const ev of timelineEvents.filter((ev) => ev.isState())) {
+                    await this.client.decryptEventIfNeeded(ev);
+                }
+
+                try {
+                    if ("org.matrix.msc4222.state_after" in joinObj) {
+                        await this.injectRoomEvents(
+                            room,
+                            undefined,
+                            stateAfterEvents,
+                            timelineEvents,
+                            syncEventData.fromCache,
+                        );
+                    } else {
+                        await this.injectRoomEvents(
+                            room,
+                            stateEvents,
+                            undefined,
+                            timelineEvents,
+                            syncEventData.fromCache,
+                        );
+                    }
+                } catch (e) {
+                    this.syncOpts.logger.error(`Failed to process events on room ${room.roomId}:`, e);
+                }
+
+                // set summary after processing events,
+                // because it will trigger a name calculation
+                // which needs the room state to be up to date
+                if (joinObj.summary) {
+                    room.setSummary(joinObj.summary);
+                }
+
+                // we deliberately don't add ephemeral events to the timeline
+                room.addEphemeralEvents(ephemeralEvents);
+
+                // we deliberately don't add accountData to the timeline
+                room.addAccountData(accountDataEvents);
+
+                // Sticky events primarily come via the `timeline` field, with the
+                // sticky info field marking them as sticky.
+                // If the sync is "gappy" (meaning it is skipping events to catch up) then
+                // sticky events will instead come down the sticky section.
+                // This ensures we collect sticky events from both places.
+                const stickyEventsAndStickyEventsFromTheTimeline = stickyEvents.concat(
+                    timelineEvents.filter((e) => e.unstableStickyInfo !== undefined),
+                );
+                // Note: We calculate sticky events before emitting `.Room` as it's nice to have
+                // sticky events calculated and ready to go.
+                room._unstable_addStickyEvents(stickyEventsAndStickyEventsFromTheTimeline);
+
+                room.recalculate();
+                if (joinObj.isBrandNewRoom) {
+                    client.store.storeRoom(room);
+                    client.emit(ClientEvent.Room, room);
+                }
+
+                this.processEventsForNotifs(room, timelineEvents);
+
+                const emitEvent = (e: MatrixEvent): boolean => client.emit(ClientEvent.Event, e);
+                // this fires a couple of times for some events. (eg state events are in the timeline and the state)
+                // should this get a sync section as an additional event emission param (e, syncSection))?
+                stateEvents.forEach(emitEvent);
+                timelineEvents.forEach(emitEvent);
+                ephemeralEvents.forEach(emitEvent);
+                accountDataEvents.forEach(emitEvent);
+                stickyEvents
+                    .filter(
+                        (stickyEvent) =>
+                            // This is highly unlikey, but in the case where a sticky event
+                            // has appeared in the timeline AND the sticky section, we only
+                            // want to emit the event once.
+                            !timelineEvents.some((timelineEvent) => timelineEvent.getId() === stickyEvent.getId()),
+                    )
+                    .forEach(emitEvent);
+                // Decrypt only the last message in all rooms to make sure we can generate a preview
+                // And decrypt all events after the recorded read receipt to ensure an accurate
+                // notification count
+                room.decryptCriticalEvents();
+            }),
+        );

        // Handle leaves (e.g. kicked rooms)
-        await promiseMapSeries(leaveRooms, async (leaveObj) => {
-            const room = leaveObj.room;
-            const { timelineEvents, stateEvents, stateAfterEvents } = await this.mapAndInjectRoomEvents(leaveObj);
-            const accountDataEvents = this.mapSyncEventsFormat(leaveObj.account_data);
+        await Promise.all(
+            leaveRooms.map(async (leaveObj) => {
+                const room = leaveObj.room;
+                const { timelineEvents, stateEvents, stateAfterEvents } = await this.mapAndInjectRoomEvents(leaveObj);
+                const accountDataEvents = this.mapSyncEventsFormat(leaveObj.account_data);

-            room.addAccountData(accountDataEvents);
+                room.addAccountData(accountDataEvents);

-            room.recalculate();
-            if (leaveObj.isBrandNewRoom) {
-                client.store.storeRoom(room);
-                client.emit(ClientEvent.Room, room);
-            }
+                room.recalculate();
+                if (leaveObj.isBrandNewRoom) {
+                    client.store.storeRoom(room);
+                    client.emit(ClientEvent.Room, room);
+                }

-            this.processEventsForNotifs(room, timelineEvents);
+                this.processEventsForNotifs(room, timelineEvents);

-            stateEvents?.forEach(function (e) {
-                client.emit(ClientEvent.Event, e);
-            });
-            stateAfterEvents?.forEach(function (e) {
-                client.emit(ClientEvent.Event, e);
-            });
-            timelineEvents.forEach(function (e) {
-                client.emit(ClientEvent.Event, e);
-            });
-            accountDataEvents.forEach(function (e) {
-                client.emit(ClientEvent.Event, e);
-            });
-        });
+                stateEvents?.forEach(function (e) {
+                    client.emit(ClientEvent.Event, e);
+                });
+                stateAfterEvents?.forEach(function (e) {
+                    client.emit(ClientEvent.Event, e);
+                });
+                timelineEvents.forEach(function (e) {
+                    client.emit(ClientEvent.Event, e);
+                });
+                accountDataEvents.forEach(function (e) {
+                    client.emit(ClientEvent.Event, e);
+                });
+            }),
+        );

        // Handle knocks
-        await promiseMapSeries(knockRooms, async (knockObj) => {
-            const room = knockObj.room;
-            const stateEvents = this.mapSyncEventsFormat(knockObj.knock_state, room);
+        await Promise.all(
+            knockRooms.map(async (knockObj) => {
+                const room = knockObj.room;
+                const stateEvents = this.mapSyncEventsFormat(knockObj.knock_state, room);

-            await this.injectRoomEvents(room, stateEvents, undefined);
+                await this.injectRoomEvents(room, stateEvents, undefined);

-            if (knockObj.isBrandNewRoom) {
-                room.recalculate();
-                client.store.storeRoom(room);
-                client.emit(ClientEvent.Room, room);
-            } else {
-                // Update room state for knock->leave->knock cycles
-                room.recalculate();
-            }
-            stateEvents.forEach(function (e) {
-                client.emit(ClientEvent.Event, e);
-            });
-        });
+                if (knockObj.isBrandNewRoom) {
+                    room.recalculate();
+                    client.store.storeRoom(room);
+                    client.emit(ClientEvent.Room, room);
+                } else {
+                    // Update room state for knock->leave->knock cycles
+                    room.recalculate();
+                }
+                stateEvents.forEach(function (e) {
+                    client.emit(ClientEvent.Event, e);
+                });
+            }),
+        );

        // update the notification timeline, if appropriate.
        // we only do this for live events, as otherwise we can't order them sanely
@@ -27,7 +27,7 @@ import { type RoomMember } from "./models/room-member.ts";
 import { EventType } from "./@types/event.ts";
 import { type DecryptionFailureCode } from "./crypto-api/index.ts";
 import { DecryptionError, type EventDecryptionResult } from "./common-crypto/CryptoBackend.ts";
-import { type OidcClientConfig, type ValidatedAuthMetadata } from "./oidc/index.ts";
+import { OAuthGrantType, type OidcClientConfig, type ValidatedAuthMetadata } from "./oidc/index.ts";

 /**
 * Create a {@link MatrixEvent}.
@@ -226,6 +226,6 @@ export const mockOpenIdConfiguration = (
    device_authorization_endpoint: issuer + "device",
    jwks_uri: issuer + "jwks",
    response_types_supported: ["code"],
-    grant_types_supported: ["authorization_code", "refresh_token", ...additionalGrantTypes],
+    grant_types_supported: [OAuthGrantType.AuthorizationCode, OAuthGrantType.RefreshToken, ...additionalGrantTypes],
    code_challenge_methods_supported: ["S256"],
 });
@@ -11,7 +11,6 @@
        "strict": true,
        "allowImportingTsExtensions": true,
        "lib": ["es2024", "dom", "dom.iterable"],
-        "baseUrl": ".",
        "types": ["vitest/globals", "node"],
        "paths": {
            "#types/*": ["./node_modules/vite/types/*"]
@@ -0,0 +1,11 @@
+{
+    "$schema": "https://developer.microsoft.com/en-us/json-schemas/tsdoc/v0/tsdoc.schema.json",
+    "extends": ["typedoc/tsdoc.json"],
+    "noStandardTags": false,
+    "tagDefinitions": [
+        {
+            "tagName": "@alias",
+            "syntaxKind": "modifier"
+        }
+    ]
+}
@@ -15,7 +15,7 @@ const slowTestReporter: Reporter = {
    onTestRunEnd(testModules, unhandledErrors, reason) {
        const tests = testModules
            .flatMap((m) => Array.from(m.children.allTests()))
-            .filter((test) => test.diagnostic().slow);
+            .filter((test) => test.diagnostic()?.slow);
        tests.sort((x, y) => x.diagnostic()?.duration! - y.diagnostic()?.duration!);
        tests.reverse();
Author	SHA1	Message	Date
RiotRobot	333d6a7bd6	v40.3.0-rc.0	2026-02-11 15:06:14 +00:00
Michael Telatynski	47532de452	Switch from yarn classic to pnpm (#5184 )	2026-02-11 10:35:25 +00:00
RiotRobot	87e1049dae	Merge branch 'master' into develop	2026-02-10 15:17:11 +00:00
RiotRobot	4c8e38009f	v40.2.0	2026-02-10 15:16:24 +00:00
Timo	6e3efef0c5	Fix empty string to room compatibility trick to only apply to m.call (#5172 ) * Fix empty string to room compatibility trick to only apply to m.call * add logging * fix linter * Add tests * limit logging.	2026-02-08 11:25:34 +00:00
Olivier 'reivilibre	fb590627bb	Add logging on MSC4108 DELETE request (#5140 ) Just noticed these requests aren't logged, which makes debugging difficult. This is very drive-by, done in the web editor. Co-authored-by: R Midhun Suresh <hi@midhun.dev>	2026-02-05 10:13:44 +00:00
Michael Telatynski	24cc17c270	Merge remote-tracking branch 'origin/develop' into develop	2026-02-04 11:47:05 +00:00
Michael Telatynski	68084e8fc3	Fix vitest slow reporter crashing CI Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>	2026-02-04 11:46:48 +00:00
Richard van der Hoff	0c3bb1f246	Add `m.invite_permission_config` account data type (#5183 ) For MSC4380	2026-02-04 11:00:16 +00:00
renovate[bot]	7f42b67f68	Update matrix-org (#5181 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-02-03 15:11:44 +00:00
renovate[bot]	9b871ac969	Update dependency eslint-plugin-jsdoc to v62.5.0 (#5179 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-02-03 14:39:51 +00:00
renovate[bot]	49f7972a9e	Update peter-evans/repository-dispatch digest to 28959ce (#5177 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-02-03 14:16:42 +00:00
renovate[bot]	c5ae4c8c0d	Update dependency typedoc-plugin-mdn-links to v5.1.1 (#5180 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-02-03 14:02:42 +00:00
renovate[bot]	2423300acd	Update npm non-major dependencies (#5178 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-02-03 14:01:03 +00:00
renovate[bot]	6cafa175b8	Update guibranco/github-status-action-v2 digest to 9bfa877 (#5176 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-02-03 13:55:10 +00:00
RiotRobot	40165942e3	v40.2.0-rc.0	2026-02-03 13:14:44 +00:00
Hugh Nimmo-Smith	f301251ff5	Clean up the ValidatedAuthMetadata types (#5175 ) We don't expect oidc-client-ts to provide the `device_authorization_endpoint` in the `OidcMetadata` because it isn't part of the OIDC spec. As such, I think it makes sense to standardise on defining the metadata fields in `validate.ts` and clarify where they come from.	2026-02-02 17:27:33 +00:00
Hugh Nimmo-Smith	21cd5e98c1	Use stable /auth_metadata endpoint where homeserver supports v1.15 (#5174 )	2026-02-02 15:25:48 +00:00
Andy Balaam	db070dca57	Support additional_creators in upgradeRoom (MSC4289) (#5173 ) * Support additional_creators in upgradeRoom (MSC4289) Signed-off-by: Andy Balaam <andy.balaam@matrix.org> * Remove unneeded undefined in type definition Co-authored-by: Michael Telatynski <7t3chguy@gmail.com> --------- Signed-off-by: Andy Balaam <andy.balaam@matrix.org> Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>	2026-02-02 11:24:53 +00:00
Timo	8b6ff0abcb	[js sdk embedded/widget] Fix race where this.syncApi.injectRoomEvents was called before the syncApi is instantiated (#5168 ) * Make sure we do not call this.syncApi.injectRoomEvents before the syncApi is instanciated * sonarCube remove complexity (embedded.js constructor)	2026-01-29 16:22:41 +00:00
Timo	f2157f28bb	[MatrixRTC] Minimal change to transition from "" to "ROOM" as the callId/slotId (#5166 ) * Minimal change to transition from "" to "ROOM" as the callId/slotId * Also transition MembershipManager tests to `"ROOM"` * fix merge	2026-01-29 15:37:34 +00:00
Timo	739b8e1f89	Remove sending of deprecated `notify` event (we now use (#5167 ) `m.rtc.notification`	2026-01-27 15:52:41 +00:00
Timo	bc57a3f829	[MatrixRTC] Do not sent the `livekit_alias` in sticky events (#5165 ) * Do not sent the livekit_alias in sticky events * tests	2026-01-27 15:23:14 +00:00
RiotRobot	f136f6ddf7	Merge branch 'master' into develop	2026-01-27 12:39:59 +00:00
R Midhun Suresh	82b51d0d46	Improve startup performance by using `promise.all` when processing rooms from sync (#5095 ) * Use Promise.all when processing rooms in sync response * Remove import	2026-01-27 08:56:26 +00:00
David Baker	fb12a5a1d6	Recalculate room name on loading members (#5158 ) * Recalculate room name on loading members Because if it's a DM room, loading members might change the room name * Swap other userA / userB constants * Typo Co-authored-by: Michael Telatynski <7t3chguy@gmail.com> --------- Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>	2026-01-26 12:25:41 +00:00
Hugh Nimmo-Smith	61ea5a7dfc	Add OAuthGrantType enum for OAuth 2.0 API grant types (#5161 ) * Add OAuthGrantType enum for OAuth 2.0 API grant types * Resolve circular imports * Fix complication error	2026-01-23 13:46:56 +00:00
Hugh Nimmo-Smith	4e032317fe	Add support for stable OAuth2.0 aware feature from MSC3824 (#5159 ) * Add support for stable OAuth2.0 aware feature from MSC3824 * Use stable name internally * Mark DELEGATED_OIDC_COMPATIBILITY as * Add tsdoc config for @alias JSDoc modifier	2026-01-23 09:50:12 +00:00
Robin	dbb2ae5c07	Give RoomWidgetClient the ability to send and receive sticky events (#5142 ) * Give RoomWidgetClient the ability to send and receive sticky events * linter * Fix existing tests * Add tests for sticky event support in embedded clients * Update sticky event widget capability identifiers In matrix-widget-api 0.16.1 they are updated to use the new unstable prefix from MSC4407. * Explicitly require matrix-widget-api ≥ 1.16.1 * remove TODO comment * simplify type lint checks This is needed for EW donwstream tests. Otherwise it will through: Error: matrix-js-sdk/src/embedded.ts(417,21): error TS2345: Argument of type 'string \| number \| boolean \| string[]' is not assignable to parameter of type 'number'. --------- Co-authored-by: Timo K <toger5@hotmail.de>	2026-01-22 16:07:13 +00:00
Michael Telatynski	c8032a214e	Typescript fixes (#5157 ) * Remove deprecated tsconfig baseUrl Signed-off-by: Michael Telatynski <7t3chguy@gmail.com> * Fix imports in tests Signed-off-by: Michael Telatynski <7t3chguy@gmail.com> * Fix duplicated map entry Signed-off-by: Michael Telatynski <7t3chguy@gmail.com> --------- Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>	2026-01-21 17:28:10 +00:00
Timo	6e34ca6f2d	[MatrixRTC] Fix delayId not resetting on leave (#5156 ) * reset delay id to undefined after sucessfully sending it. * add tests * setAndEmitDelayId signature dont allow implicit undefined	2026-01-21 13:53:55 +00:00
Andy Balaam	4a7a699623	Unit tests for OutgoingRequestsManager not repeating failed requests (#5154 )	2026-01-21 12:03:09 +00:00
renovate[bot]	774776178e	Update npm non-major dependencies (#5150 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-01-20 15:08:00 +00:00
renovate[bot]	ed4078528d	Update dependency typedoc to v0.28.16 (#5149 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-01-20 15:03:52 +00:00
renovate[bot]	7224961e9e	Update actions/setup-node digest to 6044e13 (#5147 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-01-20 14:44:56 +00:00
renovate[bot]	35ca07e8fb	Update matrix-org/sonarcloud-workflow-action digest to ea0cd9d (#5148 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-01-20 14:44:47 +00:00
renovate[bot]	ccffb5df2d	Update dependency eslint-plugin-jsdoc to v62 (#5153 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-01-20 14:44:04 +00:00
renovate[bot]	0d162f66f3	Update dependency matrix-widget-api to v1.16.0 (#5152 ) Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>	2026-01-20 14:43:47 +00:00