feat(pkg): Add core extensions package

packages/core-extensions/package.json

@@ -0,0 +1,28 @@
+{
+	"name": "@tabshift/core-extensions",
+	"description": "Extensions to JavaScript core objects",
+	"version": "1.0.0",
+	"type": "module",
+	"files": [
+		"dist"
+	],
+	"scripts": {
+		"build": "tsc",
+		"prepublish": "pnpm build"
+	},
+	"publishConfig": {
+		"access": "public"
+	},
+	"devDependencies": {
+		"@tabshift/typescript-config": "workspace:",
+		"typescript": "latest"
+	},
+	"author": "T. R. Bernstein <ljspkgs01-project@tabshift.dev>",
+	"license": "EUPL-1.2",
+	"exports": {
+		"./object/map": {
+			"import": "./dist/object/map.js",
+			"types": "./dist/object/map.d.ts"
+		}
+	}
+}

packages/core-extensions/scripts/generate-exports.js

@@ -0,0 +1,52 @@
+import fs from 'node:fs'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+const srcDir = path.resolve(__dirname, '../src')
+const distDir = 'dist'
+const pkgPath = path.resolve(__dirname, '../package.json')
+
+function walk(dir) {
+	let result = []
+	const entries = fs.readdirSync(dir, { withFileTypes: true })
+
+	for (const entry of entries) {
+		const fullPath = path.join(dir, entry.name)
+		if (entry.isDirectory()) {
+			result = result.concat(walk(fullPath))
+		} else if (entry.isFile() && entry.name.endsWith('.ts') && !entry.name.endsWith('.d.ts')) {
+			result.push(fullPath)
+		}
+	}
+
+	return result
+}
+
+function toSubpath(filePath) {
+	const relativePath = path.relative(srcDir, filePath).replace(/\.ts$/, '')
+	return relativePath.replace(/\\/g, '/') // For Windows compatibility
+}
+
+function updatePackageJson() {
+	const packageJson = JSON.parse(fs.readFileSync(pkgPath, 'utf8'))
+	const files = walk(srcDir)
+
+	const exportsMap = {}
+
+	files.forEach((file) => {
+		const subpath = toSubpath(file)
+		exportsMap[`./${subpath}`] = {
+			import: `./${distDir}/${subpath}.js`,
+			types: `./${distDir}/${subpath}.d.ts`
+		}
+	})
+
+	packageJson.exports = exportsMap
+
+	fs.writeFileSync(pkgPath, JSON.stringify(packageJson, null, 2))
+	console.log('✅ Modern exports updated in package.json')
+}
+
+updatePackageJson()

packages/core-extensions/src/object/map.ts

@@ -0,0 +1,21 @@
+declare global {
+	interface Object {
+		map<T, U>(
+			this: Record<string, T>,
+			callback: (value: T, key: string, obj: Record<string, T>) => U
+		): Record<string, U>
+	}
+}
+
+Object.prototype.map = function <T, U>(
+	this: Record<string, T>,
+	callback: (value: T, key: string, obj: Record<string, T>) => U
+): Record<string, U> {
+	const result: Record<string, U> = {}
+	for (const [key, value] of Object.entries(this)) {
+		result[key] = callback(value, key, this)
+	}
+	return result
+}
+
+export {}

packages/core-extensions/tsconfig.json

@@ -0,0 +1,10 @@
+{
+	"extends": "@tabshift/typescript-config/base.json",
+	"compilerOptions": {
+		"declaration": true,
+		"declarationDir": "dist",
+		"outDir": "dist",
+		"rootDir": "src"
+	},
+	"include": ["src"]
+}