Function unique

Gets only the unique elements of an array.

Remarks

This method filters duplicates by inserting all elements into a Set. Therefore, each element is compared using same-value-zero equality, which has the same behavior as Object.is, except +0 and -0 are considered equal.

Example

Basic Usage

unique([1, 2, 3, 2, 1]) // [1, 2, 3]
unique([0, -0, 1]) // [0, 1]
unique([NaN, Number.NaN, NaN]) // [NaN]
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Objects are compared by reference.

const foo = { a: 1 }
unique([foo, foo]) // [foo]
const bar = { a: 1 }
unique([foo, bar]) // [foo, bar]
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