chore!: migrate to type=module

Author: lpatiny

.eslintrc.yml

@@ -9,3 +9,4 @@ docs
 lib
 lib-esm
 .eslintcache
+.claude

.gitignore

@@ -0,0 +1,4 @@
+import { defineConfig, globalIgnores } from 'eslint/config';
+import cheminfo from 'eslint-config-cheminfo-typescript';
+
+export default defineConfig(globalIgnores(['coverage', 'lib']), cheminfo);

eslint.config.js

@@ -2,13 +2,13 @@
   "name": "netcdfjs",
   "version": "3.0.0",
   "description": "Read and explore NetCDF files",
-  "main": "./lib/index.js",
-  "module": "./lib-esm/index.js",
-  "types": "./lib/index.d.ts",
+  "type": "module",
+  "exports": {
+    ".": "./lib/index.js"
+  },
   "files": [
-    "src",
     "lib",
-    "lib-esm"
+    "src"
   ],
   "keywords": [
     "netcdf",
@@ -26,28 +26,28 @@
   "scripts": {
     "check-types": "tsc --noEmit",
     "clean": "rimraf lib lib-esm",
-    "eslint": "eslint src --cache",
+    "eslint": "eslint src",
     "eslint-fix": "npm run eslint -- --fix",
     "prepack": "npm run tsc",
     "prettier": "prettier --check src",
     "prettier-write": "prettier --write src",
-    "test": "npm run test-only && npm run eslint && npm run prettier && npm run check-types",
-    "test-only": "jest --coverage",
-    "tsc": "npm run clean && npm run tsc-cjs && npm run tsc-esm",
-    "tsc-cjs": "tsc --project tsconfig.cjs.json",
-    "tsc-esm": "tsc --project tsconfig.esm.json"
-  },
-  "devDependencies": {
-    "@types/jest": "^29.5.3",
-    "cheminfo-types": "^1.7.2",
-    "eslint": "^8.46.0",
-    "eslint-config-cheminfo-typescript": "^12.0.4",
-    "jest": "^29.6.2",
-    "prettier": "^3.0.1",
-    "ts-jest": "^29.1.1",
-    "typescript": "^5.1.6"
+    "test": "npm run test-only && npm run check-types && npm run eslint && npm run prettier",
+    "test-only": "vitest run --coverage",
+    "tsc": "npm run clean && npm run tsc-build",
+    "tsc-build": "tsc --project tsconfig.build.json"
   },
   "dependencies": {
-    "iobuffer": "^5.3.2"
+    "iobuffer": "^6.0.1"
+  },
+  "devDependencies": {
+    "@types/node": "^25.3.5",
+    "@vitest/coverage-v8": "^4.0.18",
+    "@zakodium/tsconfig": "^1.0.2",
+    "eslint": "^9.39.0",
+    "eslint-config-cheminfo-typescript": "^21.1.0",
+    "prettier": "^3.8.1",
+    "rimraf": "^6.1.3",
+    "typescript": "^5.9.3",
+    "vitest": "^4.0.18"
   }
 }

jest.config.js

@@ -1,2 +1,3 @@
 __tests__
+.DS_Store
 .npmignore

package.json

@@ -1,4 +1,4 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
 exports[`toString 1`] = `
 "DIMENSIONS

src/.npmignore

@@ -1,13 +1,16 @@
-import { readFileSync } from 'fs';
+import { readFileSync } from 'node:fs';
+import { join } from 'node:path';
 
-import { NetCDFReader } from '../parser';
+import { expect, test } from 'vitest';
 
-const pathFiles = `${__dirname}/files/`;
+import { NetCDFReader } from '../parser.ts';
 
-test('attributeExists', () => {
-  const data = readFileSync(`${pathFiles}P071.CDF`);
+const pathFiles = join(import.meta.dirname, 'data');
 
+test('attributeExists', () => {
+  const data = readFileSync(join(pathFiles, 'P071.CDF'));
   const reader = new NetCDFReader(data);
+
   expect(reader.attributeExists('operator_name')).toBe(true);
   expect(reader.attributeExists('operator_nameXX')).toBe(false);
 });