How to use webpack-cli - 3 common examples

// https://github.com/webpack/webpack-cli/blob/v3.3.9/bin/config/config-yargs.js
import supportsColor from 'supports-color';
import constants from 'webpack-cli/bin/utils/constants';

const {
  CONFIG_GROUP,
  BASIC_GROUP,
  MODULE_GROUP,
  OUTPUT_GROUP,
  ADVANCED_GROUP,
  RESOLVE_GROUP,
  OPTIMIZE_GROUP,
  DISPLAY_GROUP,
} = constants.GROUPS;

const options = {
  config: {
    type: 'string' as const,
    describe: 'Path to the config file',
    group: CONFIG_GROUP,
    defaultDescription: 'webpack.config.js or webpackfile.js',
    requiresArg: true,
  },
  'config-register': {
    type: 'array' as const,
    alias: 'r',
    describe:
      'Preload one or more modules before loading the webpack configuration',
    group: CONFIG_GROUP,
    defaultDescription: 'module id or path',

const NON_COMPILATION_CMD = process.argv.find(arg => {
		if (arg === "serve") {
			global.process.argv = global.process.argv.filter(a => a !== "serve");
			process.argv = global.process.argv;
		}
		return NON_COMPILATION_ARGS.find(a => a === arg);
	});

	if (NON_COMPILATION_CMD) {
		// eslint-disable-next-line
		require("webpack-cli/lib/index")(NON_COMPILATION_CMD, process.argv);
		return;
	}

  var VERSION = require("../package.json").version
    + " (webpack-cli " + require("webpack-cli/package.json").version
    + " webpack " + require("webpack/package.json").version
    + ")";

	const yargs = require("yargs").usage(`udk ${VERSION}

Usage: udk [options]
       udk [options] --entry  --output <output>
       udk [options]  --output <output>

For more information, see https://webpack.js.org/api/cli/.`);

	require("webpack-cli/bin/config-yargs")(yargs);

	const DISPLAY_GROUP = "Stats options:";
	const BASIC_GROUP = "Basic options:";
</output></output>

return;
		}

		if (argv.verbose) {
			argv["display"] = "verbose";
		}

		let options;
		try {
			options = require("webpack-cli/bin/convert-argv")(argv);
		} catch (err) {
			if (err.name !== "ValidationError") {
				throw err;
			}

			const stack = ErrorHelpers.cleanUpWebpackOptions(err.stack, err.message);
			const message = err.message + "\n" + stack;

			if (argv.color) {
				console.error(`\u001b[1m\u001b[31m${message}\u001b[39m\u001b[22m`);
			} else {
				console.error(message);
			}

			process.exitCode = 1;
			return;
		}

		/**
		 * When --silent flag is present, an object with a no-op write method is
		 * used in place of process.stout
		 */