react-native/local-cli/bundle/bundleCommandLineArgs.js

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
'use strict';
module.exports = [
{
command: '--entry-file <path>',
description: 'Path to the root JS file, either absolute or relative to JS root',
}, {
command: '--platform [string]',
description: 'Either "ios" or "android"',
default: 'ios',
}, {
command: '--transformer [string]',
description: 'Specify a custom transformer to be used',
}, {
command: '--dev [boolean]',
description: 'If false, warnings are disabled and the bundle is minified',
parse: (val) => val === 'false' ? false : true,
default: true,
}, {
command: '--bundle-output <string>',
description: 'File name where to store the resulting bundle, ex. /tmp/groups.bundle',
}, {
command: '--bundle-encoding [string]',
description: 'Encoding the bundle should be written in (https://nodejs.org/api/buffer.html#buffer_buffer).',
default: 'utf8',
Add --maxWorkers flag and allow transformers to run in-band. Summary: This diff cleans up some cruft and adds some features: * It removes the usage of an env variable to control workers. * It removes the lazy and handwavy calculation on how many workers to use for jest-haste-map. Jest itself uses the maximum amount of workers available and it has never been reported as an issue – especially since it is a one-time startup cost of about 3 seconds on a cold cache only. * It adds a `--max-workers` flag to replace the env variable. This one is able to control both the number of workers for `jest-haste-map` as well as the transformers. * It makes the transformers run in the parent process if 1 or fewer workers are are specified. This should help with debugging. Once you approve this diff, I will publish a new version of metro to npm and update the version used in RN and remove the use of the env variable altogether: https://our.intern.facebook.com/intern/biggrep/?corpus=xplat&filename=&case=false&view=default&extre=&s=REACT_NATIVE_MAX_WORKERS&engine=apr_strmatch&context=false&filter[uninteresting]=false&filter[intern]=false&filter[test]=false&grep_regex= Note: the process of adding a CLI option is really broken. Commander also has a weird API. We should consider building a better public API for Metro and then consider how to build a new CLI on top of it and simplify our internal integration. I really don't like how Metro is integrated across pieces of the RN cli in ways that is hard to manage. But that is a larger task for another time :) Reviewed By: jeanlauliac Differential Revision: D5217726 fbshipit-source-id: 74efddbb87755a9e744c816fbc62efa21f6a79bf
2017-06-13 16:11:57 +00:00
}, {
command: '--max-workers [number]',
description: 'Specifies the maximum number of workers the worker-pool ' +
'will spawn for transforming files. This defaults to the number of the ' +
'cores available on your machine.',
parse: (workers: string) => Number(workers),
}, {
command: '--sourcemap-output [string]',
description: 'File name where to store the sourcemap file for resulting bundle, ex. /tmp/groups.map',
}, {
command: '--sourcemap-sources-root [string]',
description: 'Path to make sourcemap\'s sources entries relative to, ex. /root/dir',
}, {
command: '--sourcemap-use-absolute-path',
description: 'Report SourceMapURL using its full path',
default: false,
}, {
command: '--assets-dest [string]',
description: 'Directory name where to store assets referenced in the bundle',
}, {
command: '--verbose',
description: 'Enables logging',
default: false,
}, {
command: '--reset-cache',
description: 'Removes cached files',
default: false,
}, {
command: '--read-global-cache',
description: 'Try to fetch transformed JS code from the global cache, if configured.',
default: false,
},
];