src/generators/shared/utils/getIntro.js/getCjsIntro
function getCjsIntro ( options, imports ) {
	const requireBlock = imports
		.map( declaration => `var ${declaration.name} = require( '${declaration.source.value}' );` )
		.join( '\n\n' );

	if ( requireBlock ) {
		return `'use strict';\n\n${requireBlock}\n\n`;
	}

	return `'use strict';\n\n`;
}