112 lines
2.9 KiB
JavaScript
112 lines
2.9 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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*/
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'use strict';
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const copyProjectTemplateAndReplace = require('../generator/copyProjectTemplateAndReplace');
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const path = require('path');
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const fs = require('fs');
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/**
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* The eject command re-creates the `android` and `ios` native folders. Because native code can be
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* difficult to maintain, this new script allows an `app.json` to be defined for the project, which
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* is used to configure the native app.
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*
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* The `app.json` config may contain the following keys:
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*
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* - `name` - The short name used for the project, should be TitleCase
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* - `displayName` - The app's name on the home screen
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*/
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function eject() {
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const doesIOSExist = fs.existsSync(path.resolve('ios'));
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const doesAndroidExist = fs.existsSync(path.resolve('android'));
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if (doesIOSExist && doesAndroidExist) {
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console.error(
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'Both the iOS and Android folders already exist! Please delete `ios` and/or `android` ' +
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'before ejecting.',
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);
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process.exit(1);
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}
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let appConfig = null;
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try {
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appConfig = require(path.resolve('app.json'));
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} catch (e) {
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console.error(
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'Eject requires an `app.json` config file to be located at ' +
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`${path.resolve(
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'app.json',
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)}, and it must at least specify a \`name\` for the project ` +
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"name, and a `displayName` for the app's home screen label.",
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);
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process.exit(1);
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}
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const appName = appConfig.name;
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if (!appName) {
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console.error(
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'App `name` must be defined in the `app.json` config file to define the project name. ' +
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'It must not contain any spaces or dashes.',
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);
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process.exit(1);
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}
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const displayName = appConfig.displayName;
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if (!displayName) {
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console.error(
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'App `displayName` must be defined in the `app.json` config file, to define the label ' +
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'of the app on the home screen.',
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);
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process.exit(1);
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}
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const templateOptions = {displayName};
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if (!doesIOSExist) {
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console.log('Generating the iOS folder.');
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copyProjectTemplateAndReplace(
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path.resolve(
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'node_modules',
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'react-native',
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'local-cli',
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'templates',
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'HelloWorld',
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'ios',
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),
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path.resolve('ios'),
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appName,
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templateOptions,
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);
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}
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if (!doesAndroidExist) {
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console.log('Generating the Android folder.');
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copyProjectTemplateAndReplace(
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path.resolve(
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'node_modules',
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'react-native',
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'local-cli',
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'templates',
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'HelloWorld',
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'android',
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),
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path.resolve('android'),
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appName,
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templateOptions,
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);
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}
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}
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module.exports = {
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name: 'eject',
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description: 'Re-create the iOS and Android folders and native code',
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func: eject,
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options: [],
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};
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