mjs (esm) & cjs build;"type": "module"

	fixes juliangruber#37

.gitignore

@@ -1 +1,2 @@
 node_modules
+dist

.npmignore

@@ -0,0 +1 @@
+node_modules

index.d.ts

@@ -0,0 +1,4 @@
+export default function ({ version, experimental }?: {
+    version?: string | undefined;
+    experimental?: boolean | undefined;
+}): string[];

package.json

@@ -4,19 +4,31 @@
   "description": "List of node.js builtin modules",
   "repository": "juliangruber/builtins",
   "license": "MIT",
-  "main": "index.js",
+  "type": "module",
+  "main": "./dist/cjs/index.js",
+  "module": "./dist/mjs/index.js",
+  "exports": {
+    ".": {
+      "require": "./dist/cjs/index.js",
+      "import": "./dist/mjs/index.js"
+    }
+  },
+  "types": "./dist/mjs/index.d.ts",
   "files": [],
   "scripts": {
+    "build": "rimraf cjs/**,mjs/** && tsc -p tsconfig.cjs.json && tsc -p tsconfig.mjs.json",
     "release": "np",
     "test": "node test.js"
   },
   "dependencies": {
-    "semver": "^7.0.0"
+    "semver": "github:MylesBorins/node-semver#alternative-esm"
   },
   "devDependencies": {
-    "np": "^6.1.0",
-    "prettier-standard": "^15.0.0",
-    "standard": "^14.0.2",
-    "tape": "^4.11.0"
+    "np": "^6.5.0",
+    "prettier-standard": "^15.0.1",
+    "rimraf": "^3.0.2",
+    "standard": "^14.3.4",
+    "tape": "^4.13.3",
+    "typescript": "^4.3.5"
   }
 }

index.js → src/index.ts

@@ -1,12 +1,12 @@
 'use strict'
 
-var semver = require('semver')
+import semver from 'semver'
 
-module.exports = function ({
+export default function builtins({
   version = process.version,
   experimental = false
-} = {}) {
-  var coreModules = [
+} = {}):string[] {
+  const coreModules = [
     'assert',
     'buffer',
     'child_process',
@@ -59,6 +59,6 @@ module.exports = function ({
   if (semver.gte(version, '12.16.0') && experimental) {
     coreModules.push('wasi')
   }
-  
+
   return coreModules
 }

tsconfig.cjs.json

@@ -0,0 +1,8 @@
+{
+	"extends": "./tsconfig.json",
+  "compilerOptions": {
+		"module": "CommonJS",
+    "outDir": "dist/cjs",
+		"declarationDir": "dist/cjs"
+  }
+}

tsconfig.json

@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+    "target": "es2019",
+    "module": "ESNext",
+    "declaration": true,
+		"rootDir": "src",
+		"outDir": "dist/mjs",
+		"declarationDir": "dist/mjs",
+    "strict": true,
+    "moduleResolution": "node",
+    "allowSyntheticDefaultImports": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true
+  },
+	"include": ["src/**/*"],
+	"exclude": ["mjs"]
+}

tsconfig.mjs.json

@@ -0,0 +1,7 @@
+{
+	"extends": "./tsconfig.json",
+  "compilerOptions": {
+		"outDir": "dist/mjs",
+		"declarationDir": "dist/mjs"
+  }
+}