Migrate to GitHub Actions (#86)

* Migrate to GitHub Actions

* Delete .travis.yml

* Replace travis badge

* Add branch:master filter to badge link

* Remove `--fatal-infos`

.github/workflows/test-package.yml

@@ -0,0 +1,61 @@
+name: Dart CI
+
+on:
+  # Run on PRs and pushes to the default branch.
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  schedule:
+    - cron: "0 0 * * 0"
+
+env:
+  PUB_ENVIRONMENT: bot.github
+
+jobs:
+  # Check code formatting and static analysis on a single OS (linux)
+  # against Dart dev.
+  analyze:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sdk: [dev]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dart-lang/setup-dart@v0.1
+        with:
+          channel: ${{ matrix.sdk }}
+      - id: install
+        name: Install dependencies
+        run: dart pub get
+      - name: Check formatting
+        run: dart format --output=none --set-exit-if-changed .
+        if: always() && steps.install.outcome == 'success'
+      - name: Analyze code
+        run: dart analyze
+        if: always() && steps.install.outcome == 'success'
+
+  # Run tests on a matrix consisting of two dimensions:
+  # 1. OS: ubuntu-latest, (macos-latest, windows-latest)
+  # 2. release channel: dev
+  test:
+    needs: analyze
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        # Add macos-latest and/or windows-latest if relevant for this package.
+        os: [ubuntu-latest]
+        sdk: [dev]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dart-lang/setup-dart@v0.1
+        with:
+          channel: ${{ matrix.sdk }}
+      - id: install
+        name: Install dependencies
+        run: dart pub get
+      - name: Run VM tests
+        run: dart test --platform vm
+        if: always() && steps.install.outcome == 'success'

README.md

@@ -23,7 +23,7 @@ easier.
 
 ## Status
 
-[![Build Status](https://travis-ci.org/dart-lang/dart2js_info.svg)](https://travis-ci.org/dart-lang/dart2js_info)
+[![Build Status](https://github.com/dart-lang/dart2js_info/workflows/Dart%20CI/badge.svg)](https://github.com/dart-lang/dart2js_info/actions?query=workflow%3A"Dart+CI"+branch%3Amaster)
 
 Currently, most tools available here can be used to analyze code-size and
 attribution of code-size to different parts of your app. With time, we hope to