feat: add back cjs output (#1964)

* initial config

* fix: lint

* fix

* fixed esm/cjs fuckery

* fix: removed unused comment

* feat: importHelpers for esm

* remove build script and just read package.json file

---------

Co-authored-by: Arthur Fiorette <me@arthur.place>
Co-authored-by: Arthur Fiorette <47537704+arthurfiorette@users.noreply.github.com>

.gitignore

@@ -1,6 +1,7 @@
 /*.ts
 coverage/
 dist/
+cjs/
 node_modules/
 !auto.config.ts
 /.idea/
@@ -10,4 +11,4 @@ node_modules/
 
 # Other package managers
 pnpm-lock.yaml
-package-lock.json
+package-lock.json

eslint.config.js

@@ -6,7 +6,7 @@ import eslintPluginPrettierRecommended from "eslint-plugin-prettier/recommended"
 /** @type {import('@types/eslint').Linter.FlatConfig[]} */
 export default tseslint.config(
     {
-        ignores: ["dist"],
+        ignores: ["dist", "cjs", "build"],
     },
     eslint.configs.recommended,
     {

package.json

@@ -2,14 +2,15 @@
   "name": "ts-json-schema-generator",
   "version": "2.0.0",
   "description": "Generate JSON schema from your Typescript sources",
-  "main": "dist/index.js",
+  "module": "dist/index.js",
   "types": "dist/index.d.ts",
   "type": "module",
   "bin": {
     "ts-json-schema-generator": "./bin/ts-json-schema-generator.js"
   },
   "files": [
     "dist",
+    "cjs",
     "src",
     "factory",
     "index.*",
@@ -44,13 +45,18 @@
   "engines": {
     "node": ">=18.0.0"
   },
+  "exports": {
+    "import": "./dist/index.js",
+    "require": "./cjs/index.js"
+  },
   "dependencies": {
     "@types/json-schema": "^7.0.15",
     "commander": "^12.0.0",
     "glob": "^10.3.12",
     "json5": "^2.2.3",
     "normalize-path": "^3.0.0",
     "safe-stable-stringify": "^2.4.3",
+    "tslib": "^2.6.2",
     "typescript": "^5.4.5"
   },
   "devDependencies": {
@@ -84,7 +90,9 @@
   },
   "scripts": {
     "prepublishOnly": "yarn build",
-    "build": "tsc",
+    "build": "npm run build:cjs && npm run build:esm",
+    "build:cjs": "tsc -p tsconfig.cjs.json",
+    "build:esm": "tsc -p tsconfig.json",
     "watch": "tsc -w",
     "lint": "eslint",
     "format": "eslint --fix",

ts-json-schema-generator.ts

@@ -1,12 +1,14 @@
+import { mkdirSync, writeFileSync } from "node:fs";
+import { dirname } from "node:path";
 import { Command, Option } from "commander";
 import stableStringify from "safe-stable-stringify";
 import { createGenerator } from "./factory/generator.js";
-import { Config } from "./src/Config.js";
+import type { Config } from "./src/Config.js";
 import { BaseError } from "./src/Error/BaseError.js";
 import { formatError } from "./src/Utils/formatError.js";
-import pkg from "./package.json" with { type: "json" };
-import { dirname } from "path";
-import { mkdirSync, writeFileSync } from "fs";
+import fs from "node:fs";
+
+const pkg = JSON.parse(fs.readFileSync("package.json", "utf8"));
 
 const args = new Command()
     .option("-p, --path <path>", "Source file path")

tsconfig.cjs.json

@@ -0,0 +1,12 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "CommonJS",
+    "moduleResolution": "Node",
+    "outDir": "cjs"
+  },
+  "files": ["ts-json-schema-generator.ts", "index.ts"],
+  "include": ["src/**/*.ts", "factory/**/*.ts"],
+  "exclude": ["node_modules", "dist", "cjs"]
+}

tsconfig.json

@@ -22,9 +22,10 @@
     "pretty": true,
     "typeRoots": ["node_modules/@types"],
     "outDir": "dist",
-    "incremental": true
+    "incremental": true,
+    "importHelpers": true
   },
   "files": ["ts-json-schema-generator.ts", "index.ts"],
   "include": ["src/**/*.ts", "factory/**/*.ts"],
-  "exclude": ["node_modules", "dist"]
+  "exclude": ["node_modules", "dist", "cjs"]
 }