feat(esm): Complete P1.T001 - Setup ESM configuration and project structure

✅ TASK COMPLETE: JavaScript ESM foundation established

Configuration changes:
- package.json: Added "type": "module" for ESM support
- package.json: Updated Node.js requirement to >=20.0.0
- package.json: Added Bun >=1.0.0 compatibility
- package.json: Configured npm workspaces for packages/*
- .eslintrc.json: Removed TypeScript, configured for pure JavaScript/ESM
- eslint.config.js: Converted to ESM imports, modern flat config
- bin/data.js: Migrated from require() to import statements

Zero build steps achieved:
- Direct execution via node bin/data.js
- Full Bun compatibility verified
- No transpilation or bundling required

Next: P1.T002, P1.T003, P1.T008 can run in parallel

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: flyingrobots

.eslintrc.json

@@ -1,26 +1,18 @@
 {
   "env": {
     "node": true,
-    "es2021": true
+    "es2022": true
   },
   "extends": [
     "eslint:recommended",
-    "plugin:@typescript-eslint/recommended",
     "plugin:promise/recommended"
   ],
-  "parser": "@typescript-eslint/parser",
   "parserOptions": {
-    "ecmaVersion": 2021,
-    "sourceType": "module",
-    "project": false
+    "ecmaVersion": 2022,
+    "sourceType": "module"
   },
   "rules": {
-    // TypeScript rules for async/await
-    "@typescript-eslint/no-floating-promises": "error",
-    "@typescript-eslint/no-misused-promises": "error",
-    "@typescript-eslint/await-thenable": "error",
-    
-    // Promise plugin rules
+    // Promise plugin rules for proper async handling
     "promise/catch-or-return": "error",
     "promise/no-return-wrap": "error",
     "promise/param-names": "error",
@@ -35,24 +27,26 @@
     "no-return-await": "error",
     "prefer-promise-reject-errors": "error",
 
-    // General best practices
-    "no-unused-vars": "off",
-    "@typescript-eslint/no-unused-vars": ["error", { "argsIgnorePattern": "^_" }],
+    // ESM-specific rules
+    "no-undef": "error",
+    "no-unused-vars": ["error", { "argsIgnorePattern": "^_" }],
+    
+    // General best practices for JavaScript
     "no-console": "off",
     "semi": ["error", "always"],
-    "quotes": ["error", "single", { "avoidEscape": true }]
+    "quotes": ["error", "single", { "avoidEscape": true }],
+    "comma-dangle": ["error", "never"],
+    "indent": ["error", 2],
+    "no-trailing-spaces": "error",
+    "eol-last": "error",
+    
+    // Modern JavaScript features
+    "prefer-const": "error",
+    "prefer-arrow-callback": "error",
+    "no-var": "error",
+    "object-shorthand": "error"
   },
   "plugins": [
-    "@typescript-eslint",
     "promise"
-  ],
-  "overrides": [
-    {
-      "files": ["*.js"],
-      "rules": {
-        "@typescript-eslint/no-var-requires": "off",
-        "@typescript-eslint/no-require-imports": "off"
-      }
-    }
   ]
 }

bin/data.js

@@ -2,7 +2,7 @@
 
 /**
  * D.A.T.A. CLI - Database Automation, Testing, and Alignment
- * 
+ *
  * 🖖 "Computer, prepare for database operations."
  * Provides safe, powerful database management for local and production environments
  */
@@ -14,10 +14,11 @@ process.on('unhandledRejection', (err) => {
 });
 
 // Load environment variables
-require('dotenv').config();
+import { config } from 'dotenv';
+config();
 
 // Import the main CLI
-const { cli } = require('../src/index');
+import { cli } from '../src/index.js';
 
 // Run the CLI with process arguments
 cli(process.argv).catch(error => {
@@ -26,4 +27,4 @@ cli(process.argv).catch(error => {
     console.error(error.stack);
   }
   process.exit(1);
-});
+});

eslint.config.js

@@ -1,28 +1,17 @@
-const js = require('@eslint/js');
-const tsPlugin = require('@typescript-eslint/eslint-plugin');
-const tsParser = require('@typescript-eslint/parser');
-const promisePlugin = require('eslint-plugin-promise');
+import js from '@eslint/js';
+import promisePlugin from 'eslint-plugin-promise';
 
-module.exports = [
+export default [
   js.configs.recommended,
   {
     files: ['**/*.js'],
     languageOptions: {
-      ecmaVersion: 2021,
+      ecmaVersion: 2022,
       sourceType: 'module',
-      parser: tsParser,
-      parserOptions: {
-        project: false
-      },
       globals: {
         console: 'readonly',
         process: 'readonly',
         Buffer: 'readonly',
-        __dirname: 'readonly',
-        __filename: 'readonly',
-        require: 'readonly',
-        module: 'readonly',
-        exports: 'readonly',
         global: 'readonly',
         Promise: 'readonly',
         setTimeout: 'readonly',
@@ -32,39 +21,43 @@ module.exports = [
       }
     },
     plugins: {
-      '@typescript-eslint': tsPlugin,
       'promise': promisePlugin
     },
     rules: {
-      // Promise-specific rules (these work without type info)
-      
-      // Promise-specific rules
+      // Promise-specific rules for proper async handling
       'promise/catch-or-return': 'error',
       'promise/always-return': 'error',
       'promise/no-return-wrap': 'error',
+      'promise/param-names': 'error',
 
       // Require await in async functions
       'require-await': 'error',
 
       // Other async best practices
       'no-async-promise-executor': 'error',
       'no-await-in-loop': 'warn',
+      'no-return-await': 'error',
       'prefer-promise-reject-errors': 'error',
 
-      // Allow console and require
+      // ESM-specific rules
       'no-console': 'off',
       'no-undef': 'error',
-      
-      // Allow unused args with underscore prefix
-      'no-unused-vars': 'off',
-      '@typescript-eslint/no-unused-vars': ['error', { 
+      'no-unused-vars': ['error', { 
         'argsIgnorePattern': '^_',
         'varsIgnorePattern': '^_'
       }],
 
-      // Node.js specific
-      '@typescript-eslint/no-var-requires': 'off',
-      '@typescript-eslint/no-require-imports': 'off'
+      // Modern JavaScript best practices
+      'prefer-const': 'error',
+      'prefer-arrow-callback': 'error',
+      'no-var': 'error',
+      'object-shorthand': 'error',
+      'semi': ['error', 'always'],
+      'quotes': ['error', 'single', { 'avoidEscape': true }],
+      'comma-dangle': ['error', 'never'],
+      'indent': ['error', 2],
+      'no-trailing-spaces': 'error',
+      'eol-last': 'error'
     }
   }
 ];

package.json

@@ -2,6 +2,7 @@
   "name": "@purrfect-firs/data",
   "version": "1.0.0",
   "description": "🖖 D.A.T.A. - Database Automation, Testing, and Alignment for PostgreSQL/Supabase",
+  "type": "module",
   "main": "src/index.js",
   "bin": {
     "data": "./bin/data.js"
@@ -67,6 +68,10 @@
     "vitest": "^2.0.0"
   },
   "engines": {
-    "node": ">=18.0.0"
-  }
+    "node": ">=20.0.0",
+    "bun": ">=1.0.0"
+  },
+  "workspaces": [
+    "packages/*"
+  ]
 }