Add Jest tests and publish automation with changesets

.changeset/README.md

@@ -0,0 +1,8 @@
+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
+with multi-package repos, or single-package repos to help you version and publish your code. You can
+find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in
+[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

.changeset/beige-dolls-jam.md

@@ -0,0 +1,5 @@
+---
+"@single-spa/import-map-injector": minor
+---
+
+Add Jest tests and automation for publishing

.changeset/config.json

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://unpkg.com/@changesets/[email protected]/schema.json",
+  "changelog": "@changesets/cli/changelog",
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "public",
+  "baseBranch": "main",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

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

@@ -0,0 +1,83 @@
+name: Build, Test, Release
+
+on:
+  push:
+    branches: main
+  pull_request:
+    branches: "*"
+
+jobs:
+  build_lint_test:
+    name: Build, Lint, and Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+
+      - name: Install Pnpm
+        uses: pnpm/[email protected]
+        with:
+          version: 8.6.9
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+          cache: pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Lint
+        run: pnpm run lint
+
+      - name: Check format
+        run: pnpm run check-format
+
+      - name: Check types
+        run: pnpm run typecheck
+
+      - name: Test
+        run: pnpm run test --coverage
+
+      - name: Build
+        run: pnpm run build
+
+  release:
+    name: Release
+    needs: build_lint_test
+    permissions:
+      contents: write # To push release tags
+      pull-requests: write # To create release pull requests
+    runs-on: ubuntu-latest
+    if: ${{ github.ref == 'refs/heads/main' }}
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+
+      - name: Install Pnpm
+        uses: pnpm/[email protected]
+        with:
+          version: 8.6.9
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+          cache: pnpm
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build
+        run: pnpm run build
+
+      - name: Create Release Pull Request or Publish to NPM
+        id: changesets
+        uses: changesets/action@v1
+        with:
+          publish: pnpm run release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

jest.config.cjs

@@ -0,0 +1,8 @@
+/** @type {import('jest').Config} */
+module.exports = {
+  collectCoverageFrom: ["src/**/*.ts"],
+  resetMocks: true,
+  restoreMocks: true,
+  setupFiles: ["./jest.setup.js"],
+  testEnvironment: "jsdom",
+};

jest.setup.js

@@ -0,0 +1,3 @@
+import jestFetchMock from "jest-fetch-mock";
+
+jestFetchMock.enableMocks();

package.json

@@ -27,7 +27,11 @@
     "build": "concurrently pnpm:build:*",
     "prepublishOnly": "pnpm run build",
     "build:types": "tsc",
-    "build:lib": "rollup -c"
+    "build:lib": "rollup -c",
+    "test": "jest",
+    "typecheck": "tsc --noEmit --emitDeclarationOnly false",
+    "changeset": "changeset",
+    "release": "changeset publish"
   },
   "keywords": [],
   "author": "Joel Denning",
@@ -37,15 +41,23 @@
     "@babel/eslint-parser": "^7.22.10",
     "@babel/preset-env": "^7.22.10",
     "@babel/preset-typescript": "^7.22.5",
+    "@changesets/cli": "^2.26.2",
     "@rollup/plugin-babel": "^6.0.3",
     "@rollup/plugin-terser": "^0.4.3",
+    "@types/jest": "^29.5.4",
+    "babel-jest": "^29.6.2",
     "concurrently": "^8.2.0",
     "eslint": "^8.47.0",
     "eslint-config-ts-important-stuff": "^1.1.0",
     "express": "^4.18.2",
     "husky": "^8.0.3",
+    "jest": "^29.5.0",
+    "jest-cli": "^29.5.0",
+    "jest-environment-jsdom": "^29.5.0",
+    "jest-fetch-mock": "^3.0.3",
     "prettier": "^3.0.2",
     "rollup": "^3.28.0",
     "typescript": "^5.1.6"
-  }
+  },
+  "packageManager": "[email protected]"
 }