Strategy - A

strategy-a.js

function selectSeniorCandidates(candidates) {
	return candidates.filter(candidate => {
		// with at least 5 years of experience that knows Javascript
		return (
			candidate.yearsOfExperience >= 5 &&
			candidate.languages.includes('Javascript')
		);
	});
}

const candidates = [
	{
		name: 'Jane',
		yearsOfExperience: 6,
		languages: ['Ruby', 'Javascript']
	},
	{
		name: 'John',
		yearsOfExperience: 2,
		languages: ['Java', 'Javascript', 'Ruby']
	}
];