30-seconds-of-code/javascript/snippets/flags.md

title, type, tags, author, cover, dateModified

title	type	tags	author	cover	dateModified
Array to flags object	snippet	array object	chalarangelo	glass-blowing	2022-04-12T05:00:00-04:00

Converts an array of strings into an object mapping to true.

• Use Array.prototype.reduce() to convert the array into an object, where each array value is used as a key whose value is set to true.

const flags = arr => arr.reduce((acc, str) => ({...acc, [str]: true }), {});

flags(['red', 'green']); // { red: true, green: true }