src/index.js
function require(...names) {
		const unknown = names.filter(name => !options[name]);
		if (unknown.length > 0) {
			throw new MrmUndefinedOption(`Required config options are missed: ${unknown.join(', ')}.`, {
				unknown,
			});
		}
		return config;
	}
function require(...names) {
		const unknown = names.filter(name => !options[name]);
		if (unknown.length > 0) {
			throw new MrmUndefinedOption(`Required config options are missed: ${unknown.join(', ')}.`, {
				unknown,
			});
		}
		return config;
	}
function require ( ... names ) { const unknown = names . filter ( name => ! options [ name ] ) ; if ( unknown . length > 0 ) { throw new MrmUndefinedOption ( ` ${ unknown . join ( ', ' ) } ` , { unknown , } ) ; } return config ; }
Mark config options as required.

@param {string[]} names...
@return {Object} this
Mark config options as required .