bin.js

#!/usr/bin/env node

/*
 * Copyright 2016 Malte Ubl.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

var argv = require('minimist')(process.argv.slice(2));
var splittable = require('./index');
var fs = require('fs');


var USAGE =
    'Usage: splittable [options] path/to/module1.js path/to/module2.js\n\n' +
    'Options:\n' +
    '  --write-to    Output directory for JS bundles.\n'
    '  --warnings    Whether to output closure compiler warnings.';

var modules = argv._;

if (argv['h'] || argv['help']) {
  console.log(USAGE);
  process.exit(0);
}

if (argv['v'] || argv['version']) {
  console.log(require('./package.json').version);
  process.exit(0);
}

var javaCheck = require('child_process').spawnSync('java', ['-version']);
if (javaCheck.error) {
  console.log('Splittable currently requires java to be installed and the ' +
      'command `java` to work.\n' +
      'Please install it for now and follow ' +
      'https://github.com/cramforce/splittable/issues/26 for when java ' +
      'becomes no longer needed.')
  process.exit(1);
}

if (!modules.length) {
  console.log(USAGE);
  process.exit(1);
}

// Bundle using splittable.
splittable({
  modules: modules,
  writeTo: argv['write-to'],
  warnings: !!argv['warnings'],
}).then(function(info) {
  if (info.warnings) {
    console.warn(info.warnings);
    console.log('Compilation successful with warnings.');
  } else {
    console.log('Compilation successful.');
  }
}, function(reason) {
  console.error('Compilation failed: ', reason.message);
  process.exit(1);
});