@better-builds/nodec/dist/compileBinary.js

The unofficial node-application-to-standalone-executable compiler, complete with ESBuild support.

import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { execa } from 'execa';
import fs from 'fs-extra';
const __dirname = path.dirname(fileURLToPath(import.meta.url));
/**
 * @typedef {'linux' | 'macos' | 'win'} SupportedOS
 */
/**
 * Uses the go toolchain to compile the resulting node + JS bundle into a
 * portable, standalone executable
 */
export async function compileBinary(bundlePath, nodePath, nodeFlags, target, appName, outDir) {
    console.info('nodePath', nodePath);
    const [os, arch] = target.split('-');
    const goTargetArch = arch === 'x64' ? 'amd64' : arch;
    const goTargetOs = os === 'macos' ? 'darwin' : os === 'win' ? 'windows' : 'linux';
    let goEntryTemplate = await fs.readFile(path.join(__dirname, 'go', 'compiler.go'), 'utf-8');
    // replace the {{appName}} placeholder with the appName the user has chosen
    goEntryTemplate = goEntryTemplate.replace('{{appName}}', appName);
    goEntryTemplate = goEntryTemplate.replace('nodeFlags := []string{}', `nodeFlags := []string{${nodeFlags.map(flag => `"${flag.replace(/^["']/, '').replace(/["']$/, '')}"`)}}`);
    const goEntryTmpPath = path.join(path.dirname(nodePath), 'compiler.go');
    await fs.writeFile(goEntryTmpPath, goEntryTemplate, 'utf-8');
    await execa('go', ['build', 'compiler.go'], {
        cwd: path.dirname(goEntryTmpPath),
        env: { GOARCH: goTargetArch, GOOS: goTargetOs },
    });
    const compilerPath = `${path.join(path.dirname(goEntryTmpPath), 'compiler')}${goTargetOs === 'windows' ? '.exe' : ''}`;
    const outFilePath = path.join(outDir, `${appName}-${target}${goTargetOs === 'windows' ? '.exe' : ''}`);
    await fs.move(compilerPath, outFilePath, {
        overwrite: true,
    });
    return outFilePath;
}