vscode-extension-samples/.scripts/run-script.js

// @ts-check
/**
 * Try running an npm script for each of the samples.
 */
const fs = require('fs');
const path = require('path');
const child_process = require('child_process');
const { samples, lspSamples } = require('./samples')

function tryRun(
  /** @type {string} */ scriptName,
  /** @type {import('./samples').Sample} */ sample
) {
  const packageJsonPath = path.join(sample.path, 'package.json');
  const packageJson = JSON.parse(fs.readFileSync(packageJsonPath).toString());
  if (Object.keys(packageJson['scripts'] || {}).includes(scriptName)) {
    console.log(`=== Running ${scriptName} on ${path.basename(sample.path)} ===`)
    child_process.execSync(`npm run ${scriptName}`, {
      cwd: sample.path,
      stdio: 'inherit'
    });
  }
}

const scriptName = process.argv[2];
for (const sample of [...samples, ...lspSamples]) {
  tryRun(scriptName, sample);
}