Switch to Github Actions and pnpm (#70)

Author: Joel Denning

.github/workflows/build-and-test.yml

@@ -0,0 +1,21 @@
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: "15"
+      - uses: pnpm/action-setup@v1.2.1
+        with:
+          version: 5.14.1
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm run build
+      - run: pnpm test
+      - run: pnpm run check-format
+      - run: pnpm run lint

.prettierignore

@@ -2,4 +2,5 @@
 .gitignore
 dist
 LICENSE
-yarn.lock
+yarn.lock
+pnpm-lock.yaml

.travis.yml

@@ -21,6 +21,7 @@
     "test:jest": "cross-env BABEL_ENV=test jest",
     "test:types": "tsd",
     "format": "prettier --write .",
+    "check-format": "prettier --check .",
     "lint": "eslint src"
   },
   "jest": {