Array deduplication

Modules

• esnext.array.unique-by
• esnext.typed-array.unique-by

Types

interface Array<T> {
  uniqueBy(resolver?: (item: any) => any): Array<T>;
}

interface TypedArray {
  uniqueBy(resolver?: (item: any) => any): TypedArray;;
}

Entry points

core-js/proposals/array-unique
core-js(-pure)/full/array(/virtual)/unique-by
core-js/full/typed-array/unique-by

Example

Example:

[1, 2, 3, 2, 1].uniqueBy(); // [1, 2, 3]

[
  { id: 1, uid: 10000 },
  { id: 2, uid: 10000 },
  { id: 3, uid: 10001 },
].uniqueBy((it) => it.uid); // => [{ id: 1, uid: 10000 }, { id: 3, uid: 10001 }]