Bundle action using esbuild

Instead of using a bundled node_modules,
* Run `npm install` before performing various tasks

Change pr-checks to not be particularly picky about the generated
content because it will differ between different versions as everything
is bundled together.

Author: jsoref

.gitattributes

@@ -1,4 +1,5 @@
-lib/*.js linguist-generated=true
+*/*-action.js linguist-generated=true
+*/*-action-post.js linguist-generated=true
 .github/workflows/__* linguist-generated=true
 
 # Reduce incidence of needless merge conflicts on CHANGELOG.md

.github/actions/prepare-test/action.yml

@@ -19,6 +19,12 @@ outputs:
 runs:
   using: composite
   steps:
+    - name: npm install
+      shell: bash
+      run: |
+        if command -v npm >/dev/null 2>/dev/null; then
+          npm ci
+        fi
     - name: Move codeql-action
       shell: bash
       run: |

.github/actions/update-bundle/action.yml

@@ -8,6 +8,10 @@ runs:
       shell: bash
       run: npm install -g ts-node
 
+    - name: Install
+      shell: bash
+      run: npm ci
+
     - name: Run update script
       working-directory: ${{ github.action_path }}
       shell: bash

.github/actions/update-bundle/index.ts

@@ -58,7 +58,7 @@ async function main() {
   const previousDefaults: Defaults = JSON.parse(fs.readFileSync('../../../src/defaults.json', 'utf8'));
   const newDefaults = await getNewDefaults(previousDefaults);
   // Update the source file in the repository. Calling workflows should subsequently rebuild
-  // the Action to update `lib/defaults.json`.
+  // the Action.
   fs.writeFileSync('../../../src/defaults.json', JSON.stringify(newDefaults, null, 2) + "\n");
 }
 

.github/workflows/pr-checks.yml

@@ -26,14 +26,18 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Install
+        shell: bash
+        run: npm install
+
       - name: Lint
         id: lint
         run: npm run-script lint-ci
 
       - name: Upload sarif
         uses: github/codeql-action/upload-sarif@v3
         # Only upload SARIF for the latest version of Node.js
-        if: "!cancelled() && matrix.node-types-version == 'current' && !startsWith(github.head_ref, 'dependabot/')"
+        if: ${{ !cancelled() && matrix.node-types-version == 'current' && !startsWith(github.head_ref, 'dependabot/') }}
         with:
           sarif_file: eslint.sarif
           category: eslint
@@ -52,6 +56,16 @@ jobs:
           # `npm install` on Linux.
           npm install
 
+          (
+            echo '*/*-action.js';
+            echo '*/*-action-post.js'
+          ) >> .gitignore
+          for action in $(
+            find * -mindepth 1 -maxdepth 1 -type f -name action.yml
+          ); do
+            git rm -f "$(dirname "$action")"/*-action*.js
+          done
+
           if [ ! -z "$(git status --porcelain)" ]; then
             git config --global user.email "github-actions@github.com"
             git config --global user.name "github-actions[bot]"
@@ -112,6 +126,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - name: Build
+        run: |
+          npm run build
       - name: npm test
         run: |
           # Run any commands referenced in package.json using Bash, otherwise

.github/workflows/rebuild.yml

@@ -31,14 +31,19 @@ jobs:
         run: |
           git fetch origin "$BASE_BRANCH"
 
-          # Allow merge conflicts in `lib`, since rebuilding should resolve them.
+          # Allow merge conflicts in `action(-post|-pre|).js`, since rebuilding should resolve them.
           git merge "origin/$BASE_BRANCH" || echo "Merge conflicts detected"
 
-          # Check for merge conflicts outside of `lib`. Disable git diff's trailing whitespace check
-          # since `node_modules/@types/semver/README.md` fails it.
-          if git -c core.whitespace=-trailing-space diff --check | grep --invert-match '^lib/'; then
-            echo "Merge conflicts detected outside of lib/ directory. Please resolve them manually."
-            git -c core.whitespace=-trailing-space diff --check | grep --invert-match '^lib/' || true
+          git_diff_ignore_generated_actions() {
+            git diff --check |
+            grep --invert-match -- '-action-pre\.js$' |
+            grep --invert-match -- '-action\.js$' |
+            grep --invert-match -- '-action-post\.js$'
+          }
+
+          if git_diff_ignore_generated_actions | grep -q .; then
+            echo "Merge conflicts detected outside of generated action js files. Please resolve them manually."
+            git_diff_ignore_generated_actions || true
             exit 1
           fi
 

.github/workflows/script/package.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+bundle_file() {
+    module=$(dirname "$1")
+    file=$(perl -ne 'next unless m<'"$2"': .(?:.*/|)(.*\.js)>;print $1' "$1")
+    if [ -n "$file" ]; then
+        if [ "$2" = main ]; then
+            suffix=''
+        else
+            suffix="-$2"
+        fi
+        ./node_modules/.bin/esbuild "lib/$module-action$suffix.js" --bundle --minify --platform=node --outfile="./$module/$file"
+        perl -pi -e 's/scripts:\{.*?\}/scripts:{}/' "./$module/$file"
+    fi
+};
+for a in */action.yml; do
+    bundle_file $a main;
+    bundle_file $a post;
+done

.github/workflows/script/update-node-modules.sh

@@ -28,14 +28,13 @@ jobs:
       run: |
         git fetch origin "$BRANCH" --depth=1
         git checkout "origin/$BRANCH"
-        .github/workflows/script/update-node-modules.sh update
+        npm run build
         if [ ! -z "$(git status --porcelain)" ]; then
           git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git config --global user.name "github-actions[bot]"
-          git add node_modules
-          git commit -am "Update checked-in dependencies"
+          git commit -am "Update action bundles"
           git push origin "HEAD:$BRANCH"
-          echo "Pushed a commit to update the checked-in dependencies." \
+          echo "Pushed a commit to update the checked-in action bundles." \
             "Please mark the PR as ready for review to trigger PR checks." |
             gh pr comment --body-file - --repo github/codeql-action "${{ github.event.pull_request.number }}"
           gh pr ready --undo --repo github/codeql-action "${{ github.event.pull_request.number }}"

.github/workflows/update-dependencies.yml

@@ -1,5 +1,7 @@
-# Ignore for example failing-tests.json from AVA
-node_modules/.cache/
+# actions are bundled to make this repository lightweight for consumers
+node_modules/
+# lib is generated by tsc
+lib
 # Java build files
 .gradle/
 *.class
@@ -8,4 +10,4 @@ node_modules/.cache/
 # eslint sarif report
 eslint.sarif
 # for local incremental compilation
-tsconfig.tsbuildinfo
+tsconfig.tsbuildinfo