feat(package): Use microbundle to create cjs and mjs builds and convert package to module

Signed-off-by: Tilman Vatteroth <[email protected]>

Author: mrdrogdrog

.eslintrc.json

@@ -4,26 +4,33 @@
  * SPDX-License-Identifier: CC0-1.0
  */
 {
-  "parser": "@typescript-eslint/parser",
-  "parserOptions": {
-    "project": ["./tsconfig-eslint.json"]
+  "parser" : "@typescript-eslint/parser",
+  "parserOptions" : {
+    "project" : [
+      "./tsconfig.json"
+    ]
   },
-  "plugins": ["@typescript-eslint", "jest"],
-  "env": {
-    "jest": true,
-    "jest/globals": true
+  "plugins" : [
+    "@typescript-eslint",
+    "jest",
+    "prettier"
+  ],
+  "env" : {
+    "jest" : true,
+    "jest/globals" : true
   },
-  "extends": [
+  "extends" : [
     "eslint:recommended",
     "plugin:@typescript-eslint/eslint-recommended",
     "plugin:@typescript-eslint/recommended-requiring-type-checking",
-    "plugin:@typescript-eslint/recommended"
+    "plugin:@typescript-eslint/recommended",
+    "prettier"
   ],
-  "rules": {
-    "jest/no-disabled-tests": "warn",
-    "jest/no-focused-tests": "error",
-    "jest/no-identical-title": "error",
-    "jest/prefer-to-have-length": "warn",
-    "jest/valid-expect": "error"
+  "rules" : {
+    "jest/no-disabled-tests" : "warn",
+    "jest/no-focused-tests" : "error",
+    "jest/no-identical-title" : "error",
+    "jest/prefer-to-have-length" : "warn",
+    "jest/valid-expect" : "error"
   }
 }

jest.config.json

@@ -1,21 +1,22 @@
 {
   "preset": "ts-jest",
-  "transform": {
-    "^.+\\.tsx?$": "ts-jest"
-  },
   "testEnvironment": "node",
   "testRegex": "(/__tests__/.*|\\.(test|spec))\\.(ts|tsx)$",
   "testPathIgnorePatterns": [
     "/dist/"
   ],
-  "moduleFileExtensions": [
-    "ts",
-    "tsx",
-    "js"
+  "extensionsToTreatAsEsm" : [
+    ".ts"
   ],
-  "globals": {
-    "ts-jest": {
-      "tsconfig": "tsconfig-cjs.json"
-    }
+  "moduleNameMapper" : {
+    "^(\\.{1,2}/.*)\\.js$" : "$1"
+  },
+  "transform" : {
+    "^.+\\.tsx?$" : [
+      "ts-jest",
+      {
+        "useESM" : true
+      }
+    ]
   }
 }

package.json

@@ -1,54 +1,57 @@
 {
   "name": "@mrdrogdrog/optional",
-  "version": "0.2.0",
+  "version": "1.0.0",
   "description": "Provides a java-like optional class",
   "author": "Tilman Vatteroth <[email protected]>",
   "license": "MIT",
   "scripts": {
-    "build": "tsc-esm && tsc -p tsconfig-cjs.json && find dist/cjs -type d -execdir sh -c 'cd {}; mmv -rd \"*.js*\" \"#1#2\"' \\;",
+    "build": "microbundle",
     "test": "jest",
-    "prepublish": "rm -rf dist && yarn format && yarn lint && yarn build && yarn test",
+    "prepublish": "rm -rf dist && yarn lint && yarn build && yarn test",
     "lint": "eslint src --ext .ts",
-    "format": "prettier -c \"src/**/*.{ts,tsx,js}\"",
-    "format:fix": "prettier -w \"src/**/*.{ts,tsx,js}\"",
+    "lint:fix": "eslint --fix --ext .ts src",
     "docs": "typedoc --plugin typedoc-plugin-markdown --out docs src/index.ts"
   },
   "type": "module",
-  "main": "dist/cjs/index",
-  "module": "dist/mjs/index.js",
-  "types": "dist/cjs/index.d.ts",
+  "source": "src/index.ts",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "module": "./dist/index.esm.js",
+  "unpkg": "./dist/index.umd.js",
   "exports": {
-    ".": {
-      "import": "./dist/mjs/index.js",
-      "require": "./dist/cjs/index"
-    }
-  },
-  "typesVersions": {
-    "*": {
-      "index.d.ts": [
-        "dist/mjs/index.d.ts"
-      ]
-    }
+    "require": "./dist/index.cjs",
+    "types": "./dist/index.d.ts",
+    "default": "./dist/index.mjs"
   },
   "files": [
     "LICENSES/*",
     "package.json",
     "README.md",
-    "dist/**"
+    "dist/index.d.ts",
+    "dist/index.test.d.ts",
+    "dist/index.cjs.map",
+    "dist/index.cjs",
+    "dist/index.mjs.map",
+    "dist/index.mjs",
+    "dist/index.esm.js.map",
+    "dist/index.esm.js",
+    "dist/index.umd.js.map",
+    "dist/index.umd.js"
   ],
   "repository": {
     "type": "git",
     "url": "https://github.com/mrdrogdrog/optional.git"
   },
   "devDependencies": {
-    "@digitak/tsc-esm": "3.1.4",
     "@jest/types": "29.2.1",
     "@typescript-eslint/eslint-plugin": "5.40.1",
     "@typescript-eslint/parser": "5.40.1",
     "eslint": "8.26.0",
     "eslint-config-prettier": "8.5.0",
     "eslint-plugin-jest": "27.1.3",
+    "eslint-plugin-prettier": "4.2.1",
     "jest": "29.2.1",
+    "microbundle": "0.15.1",
     "prettier": "2.7.1",
     "ts-jest": "29.0.3",
     "typescript": "4.8.4"

tsconfig-cjs.json

@@ -14,11 +14,9 @@
     "module": "esnext",
     "moduleResolution": "node",
     "esModuleInterop": true,
-    "outDir": "dist/mjs",
-    "rootDir": "./src",
     "allowJs": true,
     "sourceMap": true
   },
-  "include": ["./src"],
-  "exclude": ["./dist", "**/*.test.*", "**/__mocks__/*", "**/__tests__/*"]
+  "include": ["src"],
+  "exclude": ["dist"]
 }