angular-docs-cn/packages/compiler-cli/ngcc/main-ngcc.ts

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#!/usr/bin/env node
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as path from 'canonical-path';
import * as yargs from 'yargs';
import {mainNgcc} from './src/main';
import {ConsoleLogger, LogLevel} from './src/logging/console_logger';
// CLI entry point
if (require.main === module) {
const args = process.argv.slice(2);
const options =
yargs
.option('s', {
alias: 'source',
describe:
'A path (relative to the working directory) of the `node_modules` folder to process.',
default: './node_modules'
})
.option('f', {alias: 'formats', hidden: true, array: true})
.option('p', {
alias: 'properties',
array: true,
describe:
'An array of names of properties in package.json to compile (e.g. `module` or `es2015`)\n' +
'Each of these properties should hold the path to a bundle-format.\n' +
'If provided, only the specified properties are considered for processing.\n' +
'If not provided, all the supported format properties (e.g. fesm2015, fesm5, es2015, esm2015, esm5, main, module) in the package.json are considered.'
})
.option('t', {
alias: 'target',
describe:
'A relative path (from the `source` path) to a single entry-point to process (plus its dependencies).',
})
.option('first-only', {
describe:
'If specified then only the first matching package.json property will be compiled.',
type: 'boolean'
})
.option('l', {
alias: 'loglevel',
describe: 'The lowest severity logging message that should be output.',
choices: ['debug', 'info', 'warn', 'error'],
})
.help()
.parse(args);
if (options['f'] && options['f'].length) {
console.error(
'The formats option (-f/--formats) has been removed. Consider the properties option (-p/--properties) instead.');
process.exit(1);
}
const baseSourcePath = path.resolve(options['s'] || './node_modules');
const propertiesToConsider: string[] = options['p'];
const targetEntryPointPath = options['t'] ? options['t'] : undefined;
const compileAllFormats = !options['first-only'];
const logLevel = options['l'] as keyof typeof LogLevel | undefined;
try {
mainNgcc({
basePath: baseSourcePath,
propertiesToConsider,
targetEntryPointPath,
compileAllFormats,
logger: logLevel && new ConsoleLogger(LogLevel[logLevel]),
});
process.exitCode = 0;
} catch (e) {
console.error(e.stack || e.message);
process.exitCode = 1;
}
}