[meta] migrate from travis-ci to Github Actions

.github/workflows/build.yml

@@ -0,0 +1,17 @@
+name: 'ecma-262'
+
+on: [pull_request, push]
+
+jobs:
+  build:
+    name: 'build & lint ecmarkup'
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@56f291b2a0d9e3bce72634356ae949b1e054b9f8
+        name: 'nvm install lts/* && npm install'
+        with:
+          node-version: lts/*
+          use-npm-ci: true
+      - run: 'npm ci && npm run build-master'

.github/workflows/deploy.yml

@@ -0,0 +1,21 @@
+name: 'ecma-262'
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  deploy:
+    name: 'deploy github pages'
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'tc39/ecma262' }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@56f291b2a0d9e3bce72634356ae949b1e054b9f8
+        name: 'nvm install lts/* && npm install'
+        with:
+          node-version: lts/*
+          use-npm-ci: true
+      - run: npm ci && npm run build-only ./scripts/auto-deploy.sh

.github/workflows/preview.yml

@@ -0,0 +1,24 @@
+name: 'ecma-262'
+
+on: [pull_request_target]
+
+jobs:
+  upload:
+    name: 'upload PR preview'
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'tc39/ecma262' }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ljharb/actions/node/install@56f291b2a0d9e3bce72634356ae949b1e054b9f8
+        name: 'nvm install lts/* && npm install'
+        with:
+          node-version: lts/*
+          use-npm-ci: true
+      - run: npm run build-only
+      - run: node scripts/insert_snapshot_warning
+      - run: node scripts/publish-preview
+        env:
+          CI_PREVIEW_TOKEN: ${{ secrets.CI_PREVIEW_TOKEN }}
+          PULL_REQUEST: ${{ github.event.number }}
+

scripts/publish-preview.js

@@ -9,24 +9,27 @@ const tar = require('tar-stream');
 
 
 async function go() {
-	const { TRAVIS_PULL_REQUEST, TRAVIS_PULL_REQUEST_SHA } = process.env;
+	const {
+		PULL_REQUEST,
+		GITHUB_SHA,
+	} = process.env;
 
-	if (!TRAVIS_PULL_REQUEST) { throw new ReferenceError('Missing env var TRAVIS_PULL_REQUEST'); }
-	if (!TRAVIS_PULL_REQUEST_SHA) { throw new ReferenceError('Missing env var TRAVIS_PULL_REQUEST_SHA'); }
+	if (!PULL_REQUEST) { throw new ReferenceError('Missing env var PULL_REQUEST'); }
+	if (!GITHUB_SHA) { throw new ReferenceError('Missing env var GITHUB_SHA'); }
 
 	const dir = join(__dirname, '..', 'out');
 	const files = glob(join(dir, '**'), { nodir: true });
 
 	if (!files.length) { throw new ReferenceError('No preview files found to publish'); }
 
-	console.log(`Publishing preview build of PR ${TRAVIS_PULL_REQUEST} (SHA ${TRAVIS_PULL_REQUEST_SHA})`);
+	console.log(`Publishing preview build of PR ${PULL_REQUEST} (SHA ${GITHUB_SHA})`);
 
 	const compressed = await compress(files, dir);
 	console.log(`Packed to ${compressed.length / 1000}kB`);
 
 	const data = {
-		pr: TRAVIS_PULL_REQUEST,
-		sha: TRAVIS_PULL_REQUEST_SHA,
+		pr: PULL_REQUEST,
+		sha: GITHUB_SHA,
 		compressed,
 	};