gistfile1.txt

getPackageNames(input) {
		// you don't need the global array and mutate it later. The map method will create a new array for you ;)
		if (!input) {
			return Promise.resolve({ options: [] });
		}

		return fetch(`https://api.npms.io/v2/search?q=${input}`)
			.then(response => response.json())
			// the map method will 
			// 1. create a new array
			// 2. call the function for every entry of the array
			// 3. stores the result of the function at the same index
			// 4. returns the new array with the transformed values
			// 
			// This will be less error prone, because you don't have any global state and most of the logic will be
			// handled by the map method. You just have to describe *what* you want to do with every value.
			.then(json =>  ({options: json.results.map(item => item.package)}));
	}