Move to ESM

Author: ai

.github/workflows/test.yml

@@ -6,15 +6,15 @@ env:
   FORCE_COLOR: 2
 jobs:
   full:
-    name: Node.js 15 Full
+    name: Node.js 16 Full
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
         uses: actions/checkout@v2
       - name: Install Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: 15
+          node-version: 16
       - name: Install dependencies
         uses: bahmutov/npm-install@v1
       - name: Run tests
@@ -26,7 +26,6 @@ jobs:
         node-version:
           - 14
           - 12
-          - 10
     name: Node.js ${{ matrix.node-version }} Quick
     steps:
       - name: Checkout the repository
@@ -38,4 +37,4 @@ jobs:
       - name: Install dependencies
         uses: bahmutov/npm-install@v1
       - name: Run unit tests
-        run: npx jest
+        run: node --experimental-vm-modules node_modules/.bin/jest

index.js

@@ -1,4 +1,4 @@
-let createNanoEvents = () => ({
+export let createNanoEvents = () => ({
   events: {},
   emit(event, ...args) {
     ;(this.events[event] || []).forEach(i => i(...args))
@@ -9,5 +9,3 @@ let createNanoEvents = () => ({
       (this.events[event] = (this.events[event] || []).filter(i => i !== cb))
   }
 })
-
-module.exports = { createNanoEvents }

package.json

@@ -14,42 +14,46 @@
     "subscribe"
   ],
   "scripts": {
-    "test": "jest --coverage && eslint . && check-dts && size-limit && yaspeller *.md"
+    "test": "node --experimental-vm-modules node_modules/.bin/jest --coverage && eslint . && check-dts && size-limit && yaspeller *.md"
   },
   "author": "Andrey Sitnik <[email protected]>",
   "license": "MIT",
   "repository": "ai/nanoevents",
   "engines": {
-    "node": ">=6.0.0"
+    "node": "^12.0.0 || ^14.0.0 || >=16.0.0"
   },
   "sideEffects": false,
+  "type": "module",
   "types": "./index.d.ts",
+  "exports": {
+    ".": "./index.js"
+  },
   "devDependencies": {
-    "@logux/eslint-config": "^45.2.0",
-    "@logux/sharec-config": "^0.9.0",
-    "@size-limit/dual-publish": "^4.10.1",
-    "@size-limit/preset-small-lib": "^4.10.1",
-    "@types/jest": "^26.0.20",
-    "@typescript-eslint/eslint-plugin": "^4.17.0",
-    "@typescript-eslint/parser": "^4.17.0",
+    "@babel/core": "^7.13.16",
+    "@logux/eslint-config": "^45.3.0",
+    "@logux/sharec-config": "^0.10.1",
+    "@size-limit/preset-small-lib": "^4.10.2",
+    "@types/jest": "^26.0.22",
+    "@typescript-eslint/eslint-plugin": "^4.22.0",
+    "@typescript-eslint/parser": "^4.22.0",
     "check-dts": "^0.4.4",
-    "dual-publish": "^1.0.5",
-    "eslint": "^7.22.0",
+    "clean-publish": "^2.1.1",
+    "eslint": "^7.25.0",
     "eslint-config-standard": "^16.0.2",
     "eslint-plugin-import": "^2.22.1",
-    "eslint-plugin-jest": "^24.3.1",
+    "eslint-plugin-jest": "^24.3.5",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prefer-let": "^1.1.0",
-    "eslint-plugin-promise": "^4.3.1",
+    "eslint-plugin-promise": "^5.1.0",
     "eslint-plugin-security": "^1.4.0",
-    "eslint-plugin-unicorn": "^28.0.2",
-    "jest": "^26.6.3",
+    "eslint-plugin-unicorn": "^31.0.0",
+    "jest": "^27.0.0-next.8",
     "lint-staged": "^10.5.4",
     "prettier": "^2.2.1",
-    "simple-git-hooks": "^2.0.3",
-    "size-limit": "^4.10.1",
-    "ts-jest": "^26.5.3",
-    "typescript": "^4.2.3",
+    "simple-git-hooks": "^2.4.1",
+    "size-limit": "^4.10.2",
+    "ts-jest": "^27.0.0-next.11",
+    "typescript": "^4.2.4",
     "yaspeller": "^7.0.0"
   },
   "size-limit": [
@@ -59,7 +63,12 @@
     }
   ],
   "jest": {
-    "preset": "ts-jest",
+    "preset": "ts-jest/presets/default-esm",
+    "globals": {
+      "ts-jest": {
+        "useESM": true
+      }
+    },
     "testEnvironment": "node",
     "coverageThreshold": {
       "global": {
@@ -122,6 +131,6 @@
   },
   "sharec": {
     "config": "@logux/sharec-config",
-    "version": "0.9.0"
+    "version": "0.10.1"
   }
 }

tsconfig.json

@@ -1,7 +1,9 @@
 {
   "compilerOptions": {
     "target": "es2018",
-    "module": "commonjs",
+    "module": "esnext",
+    "moduleResolution": "node",
+    "esModuleInterop": true,
     "allowJs": true,
     "strict": true,
     "noEmit": true