rg-chain.js

#!/usr/bin/env node

const child_process = require('child_process');

const texts = process.argv.slice(2);

(async () => {
  const commandsDef = texts.map((text, index) => {
    const isFirst = index === 0;
    const isLast = index === texts.length - 1;

    return {
      command: isFirst ? 'rg' : 'xargs',
      args: [...(isFirst ? [] : ['rg']), '-g', '!node_modules/', '-lF', text],
      isFirst,
      isLast,
    };
  });

  let prevChild;

  commandsDef.forEach(({command, args, isLast}) => {
    const child = child_process.spawn(command, args, {
      stdio: [
        prevChild ? prevChild.stdout : 'ignore',
        isLast ? 'inherit' : 'pipe',
        'inherit',
      ],
    });
    prevChild = child;
  });
})().catch((error) => {
  console.error(error);
  process.exit(1);
});