incorporate ncc into main existing workflows

Author: jaxxstorm

Makefile

@@ -4,13 +4,14 @@
 SHELL := /bin/bash
 SRC_DIR := src
 BUILD_DIR := lib
-ENTRY_POINT := $(SRC_DIR)/index.ts
+ENTRY_POINT := $(SRC_DIR)/main.ts
 
 # Binaries
 TS_NODE := ./node_modules/.bin/ts-node
 TS_C := ./node_modules/.bin/tsc
 ESLINT := ./node_modules/.bin/eslint
 PRETTIER := ./node_modules/.bin/prettier
+NCC := ./node_modules/.bin/ncc
 
 # Targets
 .PHONY: all clean install build format
@@ -25,6 +26,12 @@ clean:
 install:
 	npm install
 
+dev:
+	npm install --save-dev
+
+prepare:
+	$(NCC) build $(ENTRY_POINT) -o $(BUILD_DIR)
+
 # Build the TypeScript code
 build: clean
 	$(TS_C) --outDir $(BUILD_DIR) --rootDir $(SRC_DIR)

action.yml

@@ -52,4 +52,4 @@ branding:
   color: "green"
 runs:
   using: "node20"
-  main: "dist/index.js"
+  main: "lib/index.js"

dist/index.js

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

lib/index.js

@@ -0,0 +1,52 @@
+import fs from 'node:fs';
+import crypto from 'node:crypto';
+import {parentPort} from 'node:worker_threads';
+
+const handlers = {
+	hashFile: (algorithm, filePath) => new Promise((resolve, reject) => {
+		const hasher = crypto.createHash(algorithm);
+		fs.createReadStream(filePath)
+			// TODO: Use `Stream.pipeline`.
+			.on('error', reject)
+			.pipe(hasher)
+			.on('error', reject)
+			.on('finish', () => {
+				const {buffer} = new Uint8Array(hasher.read());
+				resolve({value: buffer, transferList: [buffer]});
+			});
+	}),
+	async hash(algorithm, input) {
+		const hasher = crypto.createHash(algorithm);
+
+		for (const part of [input].flat()) {
+			hasher.update(part);
+		}
+
+		const {buffer} = new Uint8Array(hasher.digest());
+		return {value: buffer, transferList: [buffer]};
+	},
+};
+
+parentPort.on('message', async message => {
+	try {
+		const {method, arguments_} = message;
+		const handler = handlers[method];
+
+		if (handler === undefined) {
+			throw new Error(`Unknown method '${method}'`);
+		}
+
+		const {value, transferList} = await handler(...arguments_);
+		parentPort.postMessage({id: message.id, value}, transferList);
+	} catch (error) {
+		const newError = {message: error.message, stack: error.stack};
+
+		for (const [key, value] of Object.entries(error)) {
+			if (typeof value !== 'object') {
+				newError[key] = value;
+			}
+		}
+
+		parentPort.postMessage({id: message.id, error: newError});
+	}
+});

lib/package.json

@@ -4,7 +4,7 @@
   "private": true,
   "type": "module",
   "description": "Install a GitHub release binary in a GitHub Actions build environment",
-  "main": "dist/index.js",
+  "main": "lib/index.js",
   "scripts": {
     "build": "ncc build src/main.ts"
   },