Wrap jsctags in a dependency-free ctags-like executable (be sure to chmod +x jsctags.js)

jsctags.js

#!/usr/bin/env node
const cp = require('child_process');

function getarg(arg) {
  const filter = new RegExp(`^-{1,2}${arg}=*(.*)`);

  const matches = process
    .argv
    .map(str => str.match(filter))

  const argdef = matches.findIndex(Boolean);

  const match = matches[argdef];

  if (Array.isArray(match)) {
    if (match[1]) {
      return match[1];
    } else if (process.argv[argdef + 1]) {
      return process.argv[argdef + 1];
    }
  }
}

const argv = {
  fileList: getarg('L'),
  outputFile: getarg('f'),
  append: getarg('append'),
  exclude: getarg('exclude'),
};

let files = '';
if (argv.fileList) {
  files = cp.execSync(`cat ${argv.fileList}`, { encoding: 'utf8' });
} else if (argv.append) {
  files = argv.append;
} else {
  let cmd = 'find . -type f -iregex ".*\.jsx?$"';
  if (argv.exclude) {
    cmd += ` -not -path "*${argv.exclude}*"`;
  }

  files = cp.execSync(cmd, { encoding: 'utf8' })
    .split('\n')
    .join(' ');
}

cp.exec(`jsctags ${files} -f | sort > ${argv.outputFile}`)

This implements a subset of the Ctags CLI API, enough to be compatible with vim-gutentags

Make sure to chmod +x jsctags.js

In your .vimrc, add:

let g:gutentags_ctags_executable="/path/to/jsctags.js"

No performance issues in an 81KLOC codebase