static_analysis.yml

name: Static Analysis
on:
    pull_request: {}
    merge_group:
        types: [checks_requested]
    push:
        branches: [develop, master]
concurrency:
    group: ${{ github.workflow }}-${{ github.ref }}
    cancel-in-progress: true
permissions: {} # No permissions needed
jobs:
    ts_lint:
        name: "Typescript Syntax Check"
        runs-on: ubuntu-24.04
        steps:
            - uses: actions/checkout@v4

            - uses: actions/setup-node@v4
              with:
                  cache: "yarn"
                  node-version-file: package.json

            - name: Install Deps
              run: "yarn install"

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

    js_lint:
        name: "ESLint"
        runs-on: ubuntu-24.04
        steps:
            - uses: actions/checkout@v4

            - uses: actions/setup-node@v4
              with:
                  cache: "yarn"
                  node-version-file: package.json

            - name: Install Deps
              run: "yarn install"

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

    workflow_lint:
        name: "Workflow Lint"
        runs-on: ubuntu-24.04
        steps:
            - uses: actions/checkout@v4

            - uses: actions/setup-node@v4
              with:
                  cache: "yarn"
                  node-version-file: package.json

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

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

    docs:
        name: "JSDoc Checker"
        runs-on: ubuntu-24.04
        steps:
            - uses: actions/checkout@v4

            - uses: actions/setup-node@v4
              with:
                  cache: "yarn"
                  node-version-file: package.json

            - name: Install Deps
              run: "yarn install"

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

            - name: Upload Artifact
              uses: actions/upload-artifact@v4
              with:
                  name: docs
                  path: _docs
                  # We'll only use this in a workflow_run, then we're done with it
                  retention-days: 1

    analyse_dead_code:
        name: "Analyse Dead Code"
        runs-on: ubuntu-24.04
        steps:
            - uses: actions/checkout@v4

            - uses: actions/setup-node@v4
              with:
                  cache: "yarn"
                  node-version-file: package.json

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

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

    element-web:
        name: Downstream tsc element-web
        if: github.event_name == 'merge_group'
        runs-on: ubuntu-24.04
        steps:
            - uses: actions/checkout@v4
              with:
                  repository: element-hq/element-web

            - uses: actions/setup-node@v4
              with:
                  cache: "yarn"
                  node-version: "lts/*"

            - name: Install Dependencies
              run: "./scripts/layered.sh"
              env:
                  # tell layered.sh to check out the right sha of the JS-SDK
                  JS_SDK_GITHUB_BASE_REF: ${{ github.sha }}

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

    # Hook for branch protection to skip downstream typechecking outside of merge queues
    downstream:
        name: Downstream Typescript Syntax Check
        runs-on: ubuntu-24.04
        if: always()
        needs:
            - element-web
        steps:
            - if: needs.element-web.result != 'skipped' && needs.element-web.result != 'success'
              run: exit 1