test: write test in JavaScript (#108)

* test: map imported module from the distribution files

* chore: remove @jest/globals, @types/jest, and ts-jest from dependencies

* test: modify test files to JavaScript

* test: remove `testMatch` option in Jest (redundant)

* build: remove `tsconfig.eslint.json`

* ci(test): set `--experimental-vm-modules` only on `Test Package` step instead

.eslintrc.json

@@ -11,7 +11,7 @@
       "extends": ["plugin:@typescript-eslint/recommended"],
       "parser": "@typescript-eslint/parser",
       "parserOptions": {
-        "project": ["tsconfig.eslint.json"]
+        "project": ["tsconfig.json"]
       },
       "plugins": ["@typescript-eslint", "eslint-plugin-tsdoc"],
       "rules": {

.github/workflows/test.yaml

@@ -12,8 +12,6 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows, ubuntu, macos]
-    env:
-      NODE_OPTIONS: --experimental-vm-modules
     steps:
       - name: Checkout
         uses: actions/[email protected]
@@ -34,6 +32,8 @@ jobs:
 
       - name: Test Package
         run: yarn test
+        env:
+          NODE_OPTIONS: --experimental-vm-modules
 
   test-action:
     name: Test Action

jest.config.json

@@ -8,12 +8,7 @@
       "statements": 100
     }
   },
-  "extensionsToTreatAsEsm": [".ts", ".mts"],
   "moduleNameMapper": {
-    "^(\\.{1,2}/.*)\\.mjs$": "$1.mts"
-  },
-  "testMatch": ["**/*.test.ts"],
-  "transform": {
-    "^.+\\.m?ts$": ["ts-jest", { "useESM": true }]
+    "^(\\.{1,2}/.*)\\.mjs$": "<rootDir>/dist/$1.mjs"
   }
 }

package.json

@@ -5,16 +5,14 @@
   "scripts": {
     "bundle": "tsc && ncc build dist/main.mjs -o main",
     "check": "sort-package-json && prettier --write . !main !README.md && eslint src",
-    "test": "jest"
+    "test": "tsc && jest"
   },
   "dependencies": {
     "@actions/core": "^1.10.1",
     "@actions/exec": "^1.1.1",
     "@actions/io": "^1.1.3"
   },
   "devDependencies": {
-    "@jest/globals": "^29.7.0",
-    "@types/jest": "^29.5.10",
     "@types/node": "^20.10.4",
     "@typescript-eslint/eslint-plugin": "^6.13.2",
     "@typescript-eslint/parser": "^6.13.2",
@@ -25,7 +23,6 @@
     "jest": "^29.7.0",
     "prettier": "^3.1.0",
     "sort-package-json": "^2.6.0",
-    "ts-jest": "^29.1.1",
     "typescript": "^5.3.3"
   },
   "packageManager": "[email protected]"

tsconfig.json

@@ -12,6 +12,5 @@
     "target": "ES2022",
     "skipLibCheck": true
   },
-  "include": ["src"],
-  "exclude": ["**/*.test.*"]
+  "include": ["src"]
 }