Hybrid NPM Module for ESM and CommonJS

package.json

@@ -1,14 +1,20 @@
 {
-  "type": "module",
   "name": "ollama",
   "version": "0.4.0",
   "description": "Ollama Javascript library",
-  "main": "dist/index.js",
+  "main": "dist/cjs/index.js",
+  "module": "dist/mjs/index.js",
   "types": "dist/index.d.ts",
+  "exports": {
+    ".": {
+      "import": "./dist/mjs/index.js",
+      "require": "./dist/cjs/index.js"
+    }
+  },
   "scripts": {
     "format": "prettier --write .",
     "test": "jest --config=jest.config.cjs ./test/*",
-    "build": "mkdir -p dist && touch dist/cleanup && rm dist/* && tsc -b",
+    "build": "rm -fr dist/* && tsc -p tsconfig.json && tsc -p tsconfig-cjs.json && node scripts/build-cjs-mjs.js",
     "lint": "eslint ./src/* ./test/*",
     "prepublishOnly": "npm run build"
   },

scripts/build-cjs-mjs.js

@@ -0,0 +1,15 @@
+const fs = require('fs')
+const path = require('path')
+
+// Function to create a package.json file with specified type
+function createPackageJson(dir, type) {
+  const content = {
+    type: type,
+  }
+  const filePath = path.join(dir, 'package.json')
+  fs.mkdirSync(dir, { recursive: true })
+  fs.writeFileSync(filePath, JSON.stringify(content, null, 4))
+}
+
+createPackageJson('dist/cjs', 'commonjs')
+createPackageJson('dist/mjs', 'module')

tsconfig-base.json

@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "noImplicitAny": false,
+    "noImplicitThis": true,
+    "strictNullChecks": true,
+    "esModuleInterop": true,
+    "declaration": true,
+    "declarationMap": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "moduleResolution": "node"
+  },
+  "include": ["./src/**/*.ts"],
+  "exclude": ["node_modules"]
+}

tsconfig-cjs.json

@@ -0,0 +1,8 @@
+{
+  "extends": "./tsconfig-base.json",
+  "compilerOptions": {
+    "module": "commonjs",
+    "outDir": "dist/cjs",
+    "target": "es2015"
+  }
+}

tsconfig.json

@@ -1,26 +1,8 @@
 {
+  "extends": "./tsconfig-base.json",
   "compilerOptions": {
-    "noImplicitAny": false,
-    "noImplicitThis": true,
-    "strictNullChecks": true,
-    "esModuleInterop": true,
-    "declaration": true,
-    "declarationMap": true,
-    "skipLibCheck": true,
-    "strict": true,
-    "forceConsistentCasingInFileNames": true,
-    "moduleResolution": "node",
-    "module": "ES2022",
-    "outDir": "./dist",
-    "target": "ES6",
+    "module": "esnext",
+    "outDir": "dist/mjs",
+    "target": "esnext",
   },
-
-  "ts-node": {
-    "swc": true,
-    "esm": true,
-  },
-
-  "include": ["./src/**/*.ts"],
-
-  "exclude": ["node_modules"],
 }