Remove duplicates from a string

dedupe.js

const dedupe = (string) => {
	const parsed = string.split('')
	let deduplicate = [];
	
	parsed.map(function(value) {
		if (!deduplicate.includes(value)) {
			 deduplicate.push(value);
		}
	})
		
	return deduplicate.join('');
}

export default dedupe;