angular-cn/aio/tools/examples/example-boilerplate.js

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const fs = require('fs-extra');
const glob = require('glob');
const path = require('canonical-path');
const shelljs = require('shelljs');
const yargs = require('yargs');
const ngPackagesInstaller = require('../ng-packages-installer');
const SHARED_PATH = path.resolve(__dirname, 'shared');
const SHARED_NODE_MODULES_PATH = path.resolve(SHARED_PATH, 'node_modules');
const BOILERPLATE_BASE_PATH = path.resolve(SHARED_PATH, 'boilerplate');
const BOILERPLATE_COMMON_BASE_PATH = path.resolve(BOILERPLATE_BASE_PATH, 'common');
const EXAMPLES_BASE_PATH = path.resolve(__dirname, '../../content/examples');
const TESTING_BASE_PATH = path.resolve(EXAMPLES_BASE_PATH, 'testing');
const BOILERPLATE_PATHS = {
cli: [
'src/environments/environment.prod.ts',
'src/environments/environment.ts',
'src/assets/.gitkeep',
'src/favicon.ico',
'src/polyfills.ts',
'src/test.ts',
'src/tsconfig.app.json',
'src/tsconfig.spec.json',
'src/typings.d.ts',
'e2e/app.po.ts',
'e2e/tsconfig.e2e.json',
'.angular-cli.json',
'.editorconfig',
'karma.conf.js',
'package.json',
'protractor.conf.js',
'tsconfig.json',
'tslint.json'
],
systemjs: [
'src/systemjs-angular-loader.js',
'src/systemjs.config.js',
'src/tsconfig.json',
'bs-config.json',
'bs-config.e2e.json',
'package.json',
'tslint.json'
],
common: [
'src/styles.css'
]
};
const EXAMPLE_CONFIG_FILENAME = 'example-config.json';
class ExampleBoilerPlate {
/**
* Add boilerplate files to all the examples
*
* @param useLocal if true then overwrite the Angular library files with locally built ones
*/
add(useLocal) {
// Install the shared `node_modules/` (if necessary overwrite Angular packages from npm with local ones).
this.installNodeModules(SHARED_PATH, useLocal);
// Get all the examples folders, indicated by those that contain a `example-config.json` file
const exampleFolders = this.getFoldersContaining(EXAMPLES_BASE_PATH, EXAMPLE_CONFIG_FILENAME, 'node_modules');
exampleFolders.forEach(exampleFolder => {
const exampleConfig = this.loadJsonFile(path.resolve(exampleFolder, EXAMPLE_CONFIG_FILENAME));
// Link the node modules - requires admin access (on Windows) because it adds symlinks
const destinationNodeModules = path.resolve(exampleFolder, 'node_modules');
fs.ensureSymlinkSync(SHARED_NODE_MODULES_PATH, destinationNodeModules);
const boilerPlateType = exampleConfig.projectType || 'cli';
const boilerPlateBasePath = path.resolve(BOILERPLATE_BASE_PATH, boilerPlateType);
// Copy the boilerplate specific files
BOILERPLATE_PATHS[boilerPlateType].forEach(filePath => this.copyFile(boilerPlateBasePath, exampleFolder, filePath));
// Copy the boilerplate common files
BOILERPLATE_PATHS.common.forEach(filePath => this.copyFile(BOILERPLATE_COMMON_BASE_PATH, exampleFolder, filePath));
});
}
/**
* Remove all the boilerplate files from all the examples
*/
remove() {
shelljs.exec('git clean -xdfq', {cwd: EXAMPLES_BASE_PATH});
}
main() {
yargs
.usage('$0 <cmd> [args]')
.command('add [--local]', 'add the boilerplate to each example',
{ local: { describe: 'Use the locally built Angular libraries, rather than ones from npm.' } },
argv => this.add(argv.local))
.command('remove', 'remove the boilerplate from each example', () => this.remove())
.demandCommand(1, 'Please supply a command from the list above')
.argv;
}
installNodeModules(basePath, useLocal) {
shelljs.exec('yarn', {cwd: basePath});
if (useLocal) {
ngPackagesInstaller.overwritePackages(basePath);
} else {
ngPackagesInstaller.restorePackages(basePath);
}
}
getFoldersContaining(basePath, filename, ignore) {
const pattern = path.resolve(basePath, '**', filename);
const ignorePattern = path.resolve(basePath, '**', ignore, '**');
return glob.sync(pattern, { ignore: [ignorePattern] }).map(file => path.dirname(file));
}
copyFile(sourceFolder, destinationFolder, filePath) {
const sourcePath = path.resolve(sourceFolder, filePath);
const destinationPath = path.resolve(destinationFolder, filePath);
fs.copySync(sourcePath, destinationPath, { overwrite: true });
fs.chmodSync(destinationPath, 444);
}
loadJsonFile(filePath) {
return fs.readJsonSync(filePath, {throws: false}) || {};
}
}
module.exports = new ExampleBoilerPlate();
// If this file was run directly then run the main function,
if (require.main === module) {
module.exports.main();
}