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function findCommonElement <T> (array1: T[], array2: T[]) {
for (const a of array1) {
for (const b of array2) {
if (a === b) return a
}
}
return null
}
// Avoid conflict with other toArray() functions
function arrayify <T> (element: T | T[]) {
if (Array.isArray(element)) return element
return [ element ]
}
// Avoid conflict with other uniq() functions
function uniqify <T> (elements: T[]) {
return Array.from(new Set(elements))
}
// Thanks: https://stackoverflow.com/a/12646864
function shuffle <T> (elements: T[]) {
const shuffled = [ ...elements ]
for (let i = shuffled.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[ shuffled[i], shuffled[j] ] = [ shuffled[j], shuffled[i] ]
}
return shuffled
}
export {
uniqify,
findCommonElement,
shuffle,
arrayify
}
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