src/generators/shared/utils/getIntro.js/getAmdIntro
function getAmdIntro ( options, imports ) {
	const sourceString = imports.length ?
		`[ ${imports.map( declaration => `'${removeExtension( declaration.source.value )}'` ).join( ', ' )} ], ` :
		'';

	const id = options.amd && options.amd.id;

	return `define(${id ? ` '${id}', ` : ''}${sourceString}function (${paramString( imports )}) { 'use strict';\n\n`;
}