cli.js

#!/usr/bin/env node

/* @flow */

// Need that because of regenerator runtime
require("babel-polyfill");

// $FlowFixMe
process.noDeprecation = true; // Suppress webpack deprecation warnings

const meow = require("meow");
const chalk = require("chalk");
const aik = require("./lib");
const cli = meow({
  help: [
    chalk.green("Usage"),
    "  $ aik filename.js",
    "",
    chalk.green("Options"),
    `  ${chalk.yellow("-b, --build")}       Build production version for given entry point. [Default output: dist]`,
    `  ${chalk.yellow("-u, --base")}        Base path with which URLs in build begins`,
    `  ${chalk.yellow("-p, --port")}        Web server port. ${chalk.dim("[Default: 4444]")}`,
    `  ${chalk.yellow("-h, --host")}        Web server host. ${chalk.dim("[Default: localhost]")}`,
    `  ${chalk.yellow("-n, --ngrok")}       Exposes server to the real world by ngrok.`,
    `  ${chalk.yellow("-o, --open")}        Opens web server URL in the default browser.`,
    `  ${chalk.yellow("-v, --version")}     Shows version.`,
    `  ${chalk.yellow("--help")}            Shows help.`,
    "",
    chalk.green("Examples"),
    "  $ aik filename.js --port 3000 -n",
    chalk.dim("  Runs aik web server on 3000 port with ngrok."),
    "",
    "  $ aik filename.js --build",
    chalk.dim("  Builds filename.js for production use and saves the output to dist folder.")
  ].join("\n"),

  flags: {
    build: {
      alias: "b"
    },
    base: {
      type: "string",
      alias: "u"
    },
    port: {
      type: "string",
      alias: "p"
    },
    host: {
      type: "string",
      alias: "h"
    },
    ngrok: {
      type: "boolean",
      alias: "n"
    },
    open: {
      type: "boolean",
      alias: "o"
    },
    version: {
      type: "boolean",
      alias: "v"
    }
  }
});

const input = cli.input || [];
const flags = cli.flags || {};

const errorHandler = err => {
  if (err.formattedMessage) {
    aik.print(err.formattedMessage, /* clear */ true);
  } else {
    // eslint-disable-next-line
    console.log(chalk.red(err.stack || err));
  }
  process.exit(1);
};

aik.deprecation.flagDeprecationWarnings(flags, () => {
  if (!input.length) {
    console.log(cli.help); // eslint-disable-line
  } else if (flags.build) {
    aik.build(input, flags).catch(errorHandler);
  } else {
    aik.devServer(input, flags).catch(errorHandler);
  }
});