feat: tsdown bundler, esm-sync, jest globals, docs update

.deepsource.toml

@@ -7,4 +7,4 @@ name = "javascript"
   environment = [
     "nodejs",
     "jest"
-  ]
+  ]

.gitattributes

@@ -1 +1 @@
-tests/**/* linguist-vendored
+tests/**/* linguist-vendored

.github/workflows/pipeline.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [20.x, 18.x]
+        node-version: [22.x, 20.x, 18.x]
       fail-fast: true
 
     steps:

.prettierrc

@@ -4,4 +4,4 @@
   "printWidth": 100,
   "singleQuote": true,
   "bracketSameLine": false
-}
+}

README.md

@@ -324,7 +324,18 @@ For further discussions about this issue, visit:
 
 ### 6.1. 2023-12-16
 
-As of version 2.2.0, **import-sync** has switched from using the archived [esm](https://github.com/standard-things/esm) package to the fork [@httptoolkit/esm](https://github.com/httptoolkit/esm). For further details, please see
+As of version 2.2.0, **import-sync** has switched from using the archived [esm](https://github.com/standard-things/esm) package to the fork [@httptoolkit/esm](https://github.com/httptoolkit/esm). For further details, please see:
 - issue [#37](https://github.com/nktnet1/import-sync/issues/37)
 - merge request [#38](https://github.com/nktnet1/import-sync/pull/38)
 
+### 6.2. 2026-04-20
+
+As of version 3.0.0, **import-sync** has switched to the fork [esm-sync](https://github.com/nktnet1/esm-sync).
+
+## 7. Alternative
+
+Jiti (Runtime TypeScript and ESM support for Node.js):
+
+- https://github.com/unjs/jiti
+
+While synchronous import is deprecated in Jiti, it still works reliably for many use cases.

eslint.config.mjs

@@ -24,7 +24,6 @@ const eslintFlatConfig = [
     languageOptions: {
       globals: {
         ...globals.node,
-        ...globals.jest,
       },
     },
   },

package.json

@@ -1,23 +1,20 @@
 {
   "name": "import-sync",
+  "type": "module",
   "repository": {
     "type": "git",
     "url": "https://github.com/nktnet1/import-sync"
   },
-  "version": "2.2.3",
+  "version": "2.2.4-beta.5",
   "files": [
     "dist"
   ],
-  "main": "dist/cjs/index.js",
-  "module": "dist/esm/index.js",
   "scripts": {
     "test": "jest",
     "tc": "jest --coverage",
     "lint": "eslint --fix './**/*.ts'",
     "tsc": "tsc --noEmit",
-    "build": "rm -rf dist && npm run build:esm && npm run build:cjs",
-    "build:esm": "tsc",
-    "build:cjs": "tsc --module CommonJS --outDir dist/cjs",
+    "build": "tsdown",
     "prepublishOnly": "npm run build",
     "prepare": "husky"
   },
@@ -42,33 +39,40 @@
   "license": "MIT",
   "description": "Synchronously import dynamic ECMAScript Modules similar to CommonJS require. Basic wrapper around esm for compatibility with both ESM and CJS projects in NodeJS.",
   "devDependencies": {
-    "@commitlint/cli": "^20.0.0",
-    "@commitlint/config-conventional": "^20.0.0",
-    "@eslint/eslintrc": "^3.3.1",
-    "@eslint/js": "^9.36.0",
-    "@types/httptoolkit__esm": "^3.3.0",
+    "@commitlint/cli": "^20.5.0",
+    "@commitlint/config-conventional": "^20.5.0",
+    "@eslint/eslintrc": "^3.3.5",
+    "@eslint/js": "^10.0.1",
+    "@jest/globals": "^30.3.0",
     "@types/jest": "^30.0.0",
-    "@types/node": "^24.5.2",
-    "@typescript-eslint/eslint-plugin": "^8.44.1",
-    "@typescript-eslint/parser": "^8.44.1",
-    "eslint": "^9.36.0",
+    "@types/node": "^25.6.0",
+    "@typescript-eslint/eslint-plugin": "^8.58.2",
+    "@typescript-eslint/parser": "^8.58.2",
+    "eslint": "^10.2.1",
     "eslint-config-prettier": "^10.1.8",
     "eslint-import-resolver-typescript": "^4.4.4",
     "eslint-plugin-import": "^2.32.0",
-    "eslint-plugin-jest": "^29.0.1",
-    "eslint-plugin-prettier": "^5.5.4",
-    "eslint-plugin-react-refresh": "^0.4.22",
-    "globals": "^16.4.0",
+    "eslint-plugin-prettier": "^5.5.5",
+    "eslint-plugin-react-refresh": "^0.5.2",
+    "globals": "^17.5.0",
     "husky": "^9.1.7",
-    "jest": "^30.1.3",
-    "node-datachannel": "^0.29.0",
+    "jest": "^30.3.0",
+    "node-datachannel": "^0.32.2",
     "node-fetch": "^3.3.2",
-    "ts-jest": "^29.4.4",
+    "ts-jest": "^29.4.9",
     "ts-node": "^10.9.2",
-    "typescript": "^5.9.2"
+    "tsdown": "^0.21.9",
+    "typescript": "^6.0.3"
   },
   "dependencies": {
-    "@httptoolkit/esm": "^3.3.2"
+    "esm-sync": "3.3.3"
   },
-  "packageManager": "pnpm@10.17.1"
+  "packageManager": "pnpm@10.33.0",
+  "main": "./dist/index.cjs",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.cts",
+  "exports": {
+    ".": "./dist/index.cjs",
+    "./package.json": "./package.json"
+  }
 }