feat: pure ESM package

See https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c

package.json

@@ -14,18 +14,10 @@
   "bugs": "https://github.com/skarab42/zoxy/issues",
   "funding": "https://github.com/sponsors/skarab42",
   "license": "MIT",
-  "type": "commonjs",
-  "main": "./build/index.js",
+  "type": "module",
+  "module": "./build/index.js",
+  "exports": "./build/index.js",
   "types": "./build/index.d.ts",
-  "module": "./build/mjs/index.js",
-  "exports": {
-    ".": {
-      "require": "./build/index.js",
-      "types": "./build/index.d.ts",
-      "import": "./build/mjs/index.js"
-    },
-    "./package.json": "./package.json"
-  },
   "private": false,
   "publishConfig": {
     "access": "public"
@@ -34,9 +26,7 @@
     "build"
   ],
   "scripts": {
-    "build:mjs": "tsc -p ./tsconfig.build-mjs.json",
-    "build:cjs": "tsc -p ./tsconfig.build-cjs.json",
-    "build": "pnpm build:mjs && pnpm build:cjs",
+    "build": "tsc -p ./tsconfig.build.json",
     "check": "tsc -p ./tsconfig.check.json",
     "lint": "eslint --max-warnings=0 .",
     "format": "prettier --check .",

tsconfig.build-cjs.json → tsconfig.build.json

@@ -1,9 +1,9 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["source"],
+  "include": ["./source"],
   "compilerOptions": {
-    "noEmit": false,
+    "module": "es2015",
     "outDir": "./build",
-    "module": "commonjs"
+    "noEmit": false
   }
 }

tsconfig.json

@@ -1,9 +1,4 @@
 {
   "extends": "@skarab/typescript-config",
-  "exclude": ["build", "coverage"],
-  "compilerOptions": {
-    "noEmit": true,
-    "module": "commonjs",
-    "target": "es2015"
-  }
+  "exclude": ["build", "coverage"]
 }