Enable testing by 'jest' on CI

.github/workflows/ci.yaml

@@ -0,0 +1,30 @@
+name: CI on pull request
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install pnpm
+        run: npm install -g pnpm
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: '.node-version'
+          cache: 'pnpm'
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Run tests
+        run: pnpm test

.node-version

@@ -0,0 +1 @@
+22.3

babel.config.json

@@ -0,0 +1,13 @@
+{
+  "presets": [
+    [
+      "@babel/preset-env",
+      {
+        "targets": {
+          "node": "current"
+        }
+      }
+    ],
+    "@babel/preset-typescript"
+  ]
+}

jest.config.cjs

@@ -0,0 +1,27 @@
+var esmModules = [
+  "chalk",
+  "ora",
+  "cli-cursor",
+  "restore-cursor",
+  "log-symbols",
+  "is-unicode-supported",
+  "strip-ansi",
+  "ansi-regex",
+  "is-interactive",
+  "stdin-discarder",
+];
+
+module.exports = {
+  preset: "ts-jest/presets/js-with-babel",
+  testEnvironment: "node",
+  transform: {
+    "^.+\\.[tj]sx?$": "babel-jest",
+  },
+  moduleNameMapper: {
+    "^(\\.{1,2}/.*)\\.js$": "$1",
+  },
+  transformIgnorePatterns: [
+  `node_modules/(?!(?:.pnpm/)?(${esmModules.join('|')}))`,
+  ],
+  testMatch: ["**/?(*.)+(test).[tj]s?(x)"],
+};

package.json

@@ -24,7 +24,7 @@
     "predev": "run-s clean",
     "clean": "rm -rf dist",
     "typecheck": "tsc --noEmit",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "jest"
   },
   "keywords": [
     "aws",
@@ -59,8 +59,16 @@
     "ora": "^6.1.2"
   },
   "devDependencies": {
+    "@babel/core": "^7.24.6",
+    "@babel/preset-env": "^7.24.6",
+    "@babel/preset-typescript": "^7.24.6",
+    "@types/jest": "^29.5.12",
     "@types/node": "^18.11.18",
+    "babel-jest": "^29.7.0",
+    "jest": "^29.7.0",
+    "js-with-babel": "link:ts-jest/presets/js-with-babel",
     "npm-run-all": "^4.1.5",
+    "ts-jest": "^29.1.4",
     "ts-node": "^10.9.1",
     "tsup": "^6.5.0",
     "typescript": "^4.9.4"