build: migrate to esbuild and reorganize config

- Migrate from rollup to esbuild for faster builds
- Move config files to .config directory
- Remove unnecessary build tools (oxlint, knip, babel)
- Simplify build configuration
- Update vitest and eslint configs

Author: jdalton

.config/.oxlintrc.json

@@ -1,5 +1,5 @@
 {
-  "$schema": "./node_modules/@biomejs/biome/configuration_schema.json",
+  "$schema": "../node_modules/@biomejs/biome/configuration_schema.json",
   "files": {
     "includes": [
       "**",
@@ -15,7 +15,8 @@
       "!**/dist",
       "!**/package.json",
       "!**/pnpm-lock.yaml"
-    ]
+    ],
+    "maxSize": 8388608
   },
   "formatter": {
     "enabled": true,
@@ -62,7 +63,7 @@
         "useSingleVarDeclarator": "error",
         "noUnusedTemplateLiteral": "error",
         "useNumberNamespace": "error",
-        "noInferrableTypes": "error",
+        "noInferrableTypes": "off",
         "noUselessElse": "error",
         "useNumericSeparators": "error"
       }

.config/babel.config.js

@@ -0,0 +1,100 @@
+/**
+ * @fileoverview esbuild configuration for fast builds with smaller bundles
+ */
+
+import { builtinModules } from 'node:module'
+import path from 'node:path'
+
+const rootPath = path.join(import.meta.dirname, '..')
+const srcPath = path.join(rootPath, 'src')
+const distPath = path.join(rootPath, 'dist')
+
+// External packages that should not be bundled
+const EXTERNAL_PACKAGES = new Set(['@socketsecurity/registry'])
+
+// Build configuration for CommonJS output
+export const buildConfig = {
+  entryPoints: [`${srcPath}/index.ts`],
+  outdir: distPath,
+  bundle: true,
+  format: 'cjs',
+  platform: 'node',
+  // Minimum Node version from package.json
+  target: 'node18',
+  sourcemap: false,
+  minify: true,
+  treeShaking: true,
+  // For bundle analysis
+  metafile: true,
+  logLevel: 'info',
+
+  // Preserve module structure for better tree-shaking
+  splitting: false,
+
+  // External dependencies
+  external: [
+    // Node.js built-ins
+    ...builtinModules,
+    ...builtinModules.map(m => `node:${m}`),
+    // External packages
+    ...Array.from(EXTERNAL_PACKAGES)
+  ],
+
+  // Banner for generated code
+  banner: {
+    js: '/* Socket PackageURL - Built with esbuild */'
+  },
+
+  // TypeScript configuration
+  tsconfig: path.join(rootPath, 'tsconfig.json'),
+
+  // Define constants for optimization
+  define: {
+    'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV || 'production')
+  }
+}
+
+// Watch configuration for development
+export const watchConfig = {
+  ...buildConfig,
+  minify: false,
+  sourcemap: 'inline',
+  logLevel: 'debug',
+  watch: {
+    onRebuild(error, result) {
+      if (error) {
+        console.error('Watch build failed:', error)
+      } else {
+        console.log('Watch build succeeded')
+        if (result.metafile) {
+          const analysis = analyzeMetafile(result.metafile)
+          console.log(analysis)
+        }
+      }
+    }
+  }
+}
+
+/**
+ * Analyze build output for size information
+ */
+function analyzeMetafile(metafile) {
+  const outputs = Object.keys(metafile.outputs)
+  let totalSize = 0
+
+  const files = outputs.map(file => {
+    const output = metafile.outputs[file]
+    totalSize += output.bytes
+    return {
+      name: path.relative(rootPath, file),
+      size: (output.bytes / 1024).toFixed(2) + ' KB'
+    }
+  })
+
+  return {
+    files,
+    totalSize: (totalSize / 1024).toFixed(2) + ' KB'
+  }
+}
+
+export { analyzeMetafile }

biome.json .config/biome.jsonbiome.json renamed to .config/biome.json

@@ -26,7 +26,7 @@ const nodeGlobalsConfig = Object.fromEntries(
   Object.entries(globals.node).map(([k]) => [k, 'readonly']),
 )
 
-const biomeConfigPath = path.join(rootPath, 'biome.json')
+const biomeConfigPath = path.join(rootPath, '.config', 'biome.json')
 const biomeConfig = require(biomeConfigPath)
 const biomeIgnores = {
   name: `Imported biome.json ignore patterns`,

.config/esbuild.config.mjs

@@ -1,14 +1,14 @@
 {
-  "extends": "./.config/tsconfig.base.json",
+  "extends": "./tsconfig.base.json",
   "compilerOptions": {
     "declaration": true,
     "declarationMap": false,
     "emitDeclarationOnly": true,
     "module": "commonjs",
     "moduleResolution": "node",
-    "outDir": "./dist",
-    "rootDir": "./src",
+    "outDir": "../dist",
+    "rootDir": "../src",
     "verbatimModuleSyntax": false
   },
-  "include": ["src/**/*.ts"]
+  "include": ["../src/**/*.ts"]
 }