node_modules/nodemon/lib/config/defaults.js

var ignoreRoot = require('ignore-by-default').directories();

// default options for config.options
const defaults = {
  restartable: 'rs',
  colours: true,
  execMap: {
    py: 'python',
    rb: 'ruby',
    ts: 'ts-node',
    // more can be added here such as ls: lsc - but please ensure it's cross
    // compatible with linux, mac and windows, or make the default.js
    // dynamically append the `.cmd` for node based utilities
  },
  ignoreRoot: ignoreRoot.map((_) => `**/${_}/**`),
  watch: ['*.*'],
  stdin: true,
  runOnChangeOnly: false,
  verbose: false,
  signal: 'SIGUSR2',
  // 'stdout' refers to the default behaviour of a required nodemon's child,
  // but also includes stderr. If this is false, data is still dispatched via
  // nodemon.on('stdout/stderr')
  stdout: true,
  watchOptions: {},
};

if ((process.env.NODE_OPTIONS || '').includes('--loader')) {
  delete defaults.execMap.ts;
}

module.exports = defaults;