Merge pull request #59 from BitGo/add_gha_ci

ci: add a job for running tests on pull requests

.github/workflows/ci.yml

@@ -0,0 +1,50 @@
+---
+name: CI
+
+on:
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [lts/-2, lts/-1]
+
+    name: Node.js ${{ matrix.node-version }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Configure Node.js
+        uses: actions/setup-node@v3
+        with:
+          cache: npm
+          node-version: ${{ matrix.node-version }}
+
+      # Install npm greater-than-or-equal-to 7 for consistent dependency resolution.
+      # We can remove this when Node.js 16 is the oldest LTS (2023-04-30).
+      - name: Update npm
+        run: npm install --global 'npm@>7'
+
+      - name: Cache node_modules
+        uses: actions/cache@v3
+        id: cache-node-modules
+        with:
+          path: node_modules
+          key: ${{ runner.os }}-node-${{ hashFiles('package-lock.json') }}
+
+      - name: Install dependencies
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: npm ci
+
+      - name: Compile TypeScript
+        run: npm run build
+
+      - name: Test
+        run: npm test