From 61f7415ffd763fc9129c87a4f7125091dcf22a1c Mon Sep 17 00:00:00 2001
From: Matt McCormick <matt.mccormick@kitware.com>
Date: Thu, 29 Dec 2022 08:40:11 -0500
Subject: [PATCH] feat(bindgen): Generate Node build configuration

---
 src/bindgen/rollup.node.config.js | 29 +++++++++++++++++++++++++++++
 src/bindgen/template.package.json |  7 +++++++
 src/itk-wasm-cli.js               | 13 ++++++++++---
 3 files changed, 46 insertions(+), 3 deletions(-)
 create mode 100644 src/bindgen/rollup.node.config.js

diff --git a/src/bindgen/rollup.node.config.js b/src/bindgen/rollup.node.config.js
new file mode 100644
index 000000000..33ed0cbf7
--- /dev/null
+++ b/src/bindgen/rollup.node.config.js
@@ -0,0 +1,29 @@
+import { nodeResolve } from '@rollup/plugin-node-resolve'
+import typescript from '@rollup/plugin-typescript'
+import commonjs from '@rollup/plugin-commonjs'
+import json from '@rollup/plugin-json'
+import { terser } from 'rollup-plugin-terser'
+import packageJson from './package.json' assert { type: 'json' }
+
+export default {
+  input: './src/indexNode.ts',
+  output: [
+    {
+      file: `./dist/${packageJson.name}.node.js`,
+      format: 'es',
+      sourcemap: true,
+      plugins: [terser(),],
+    },
+  ],
+  plugins: [
+    commonjs({
+      transformMixedEsModules: true
+    }),
+    nodeResolve({
+      preferBuiltins: true,
+      browser: false,
+    }),
+    typescript(),
+    json(),
+  ],
+}
diff --git a/src/bindgen/template.package.json b/src/bindgen/template.package.json
index 3ef26e4f2..8a0c727c0 100644
--- a/src/bindgen/template.package.json
+++ b/src/bindgen/template.package.json
@@ -6,6 +6,8 @@
   "main": "./dist/index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
+    "build": "npm run build:tsc && npm run build:node",
+    "build:node": "rollup -c ./rollup.node.config.js",
     "build:tsc": "tsc --pretty"
   },
   "keywords": [
@@ -20,6 +22,11 @@
     "itk-wasm": "^1.0.0-b.53"
   },
   "devDependencies": {
+    "@rollup/plugin-commonjs": "^24.0.0",
+    "@rollup/plugin-json": "^6.0.0",
+    "@rollup/plugin-node-resolve": "^15.0.1",
+    "@rollup/plugin-typescript": "^10.0.1",
+    "rollup": "^3.9.0",
     "typescript": "^4.9.4"
   }
 }
diff --git a/src/itk-wasm-cli.js b/src/itk-wasm-cli.js
index 90dbdea00..0886e2da6 100755
--- a/src/itk-wasm-cli.js
+++ b/src/itk-wasm-cli.js
@@ -305,12 +305,19 @@ function typescriptBindings(outputDir, buildDir, wasmBinaries, options, forNode=
       }
     }
 
-    const tsConfigPath = path.join(outputDir, 'tsconfig.json')
-    if (!fs.existsSync(tsConfigPath)) {
-      fs.copyFileSync(bindgenResource('tsconfig.json'), tsConfigPath)
+  }
+
+  if (forNode) {
+    const rollupConfigPath = path.join(outputDir, 'rollup.node.config.js')
+    if (!fs.existsSync(rollupConfigPath)) {
+      fs.copyFileSync(bindgenResource('rollup.node.config.js'), rollupConfigPath)
     }
   }
 
+  const tsConfigPath = path.join(outputDir, 'tsconfig.json')
+  if (!fs.existsSync(tsConfigPath)) {
+    fs.copyFileSync(bindgenResource('tsconfig.json'), tsConfigPath)
+  }
   wasmBinaries.forEach((wasmBinaryName) => {
     let wasmBinaryRelativePath = `${buildDir}/${wasmBinaryName}`
     if (!fs.existsSync(wasmBinaryRelativePath)) {