Build packages with unbuild to improve CJS support (openapi-ts#2310)

Author: drwpow

.npmignore

@@ -1,4 +1,5 @@
 .turbo
+*.config.*
 examples/
 scripts/
 test/

bin/cli.js

@@ -5,7 +5,7 @@ import fs from "node:fs";
 import path from "node:path";
 import { performance } from "node:perf_hooks";
 import parser from "yargs-parser";
-import openapiTS, { COMMENT_HEADER, astToString, c, error, formatTime, warn } from "../dist/index.js";
+import openapiTS, { COMMENT_HEADER, astToString, c, error, formatTime, warn } from "../dist/index.mjs";
 
 const HELP = `Usage
   $ openapi-typescript [input] [options]

build.config.ts

@@ -0,0 +1,14 @@
+import { defineBuildConfig } from "unbuild";
+
+export default defineBuildConfig({
+  entries: ["./src/index.ts"],
+  declaration: "compatible",
+  clean: true,
+  sourcemap: true,
+  rollup: {
+    // Ship CommonJS-compatible bundle
+    emitCJS: true,
+    // Don’t bundle .js files together to more closely match old exports (can remove in next major)
+    output: { preserveModules: true },
+  },
+});

package.json

@@ -11,12 +11,14 @@
     "openapi-typescript": "bin/cli.js"
   },
   "type": "module",
-  "main": "./dist/index.js",
+  "main": "./dist/index.mjs",
   "exports": {
     ".": {
-      "import": "./dist/index.js",
-      "require": "./dist/index.cjs"
+      "import":  "./dist/index.mjs",
+      "require": "./dist/index.cjs",
+      "default": "./dist/index.mjs"
     },
+    "./*.js": "./*.mjs",
     "./*": "./*"
   },
   "homepage": "https://openapi-ts.dev",
@@ -40,18 +42,18 @@
     "url": "https://github.com/openapi-ts/openapi-typescript/issues"
   },
   "scripts": {
-    "build": "pnpm run build:clean && pnpm run build:esm && pnpm run build:cjs",
-    "build:clean": "del-cli dist",
-    "build:esm": "tsc -p tsconfig.build.json",
-    "build:cjs": "esbuild --bundle --platform=node --target=es2019 --outfile=dist/index.cjs --external:@redocly/ajv --external:@redocly/openapi-core --external:typescript src/index.ts",
+    "build": "unbuild",
     "dev": "tsc -p tsconfig.build.json --watch",
     "download:schemas": "vite-node ./scripts/download-schemas.ts",
     "format": "biome format . --write",
-    "lint": "biome check .",
-    "test": "pnpm run \"/^test:/\"",
-    "test:examples": "tsc -p tsconfig.examples.json --noEmit",
+    "lint": "pnpm run lint:js && pnpm run lint:ts",
+    "lint:js": "biome check .",
+    "lint:ts": "tsc --noEmit",
+    "prepack": "pnpm run build",
+    "test": "pnpm run test:js && pnpm run test:examples && pnpm run test:exports",
     "test:js": "vitest run",
-    "test:ts": "tsc --noEmit",
+    "test:exports": "pnpm run build && attw --pack .",
+    "test:examples": "tsc -p tsconfig.examples.json --noEmit",
     "update:examples": "pnpm run build && pnpm run download:schemas && vite-node ./scripts/update-examples.ts",
     "prepublish": "pnpm run build",
     "version": "pnpm run build"
@@ -60,7 +62,7 @@
     "typescript": "^5.x"
   },
   "dependencies": {
-    "@redocly/openapi-core": "^1.34.2",
+    "@redocly/openapi-core": "^1.34.3",
     "ansi-colors": "^4.1.3",
     "change-case": "^5.4.4",
     "parse-json": "^8.3.0",
@@ -71,11 +73,9 @@
     "@types/degit": "^2.8.6",
     "@types/js-yaml": "^4.0.9",
     "degit": "^2.8.4",
-    "del-cli": "^6.0.0",
-    "esbuild": "^0.25.0",
-    "execa": "^9.0.0",
+    "execa": "^9.5.3",
     "strip-ansi": "^7.1.0",
     "typescript": "^5.8.3",
-    "vite-node": "^3.0.0"
+    "vite-node": "^3.1.3"
   }
 }