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- /**
- * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md.
- */
- /* eslint-env node */
- 'use strict';
- module.exports = function assertIsInstalled( packageName ) {
- try {
- require( packageName + '/package.json' );
- } catch ( err ) {
- console.error( `Error: Cannot find package '${ packageName }'.\n` );
- console.error( 'You need to install optional dependencies.' );
- console.error( 'Run: \'npm run install-optional-dependencies\'.' );
- process.exit( 1 );
- }
- };
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