es-toolkit

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A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

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text/typescript

import { IsWritable } from './IsWritable.d.mjs'; import { MutableList } from './MutableList.d.mjs'; type RejectReadonly<T extends MutableList<unknown>> = IsWritable<T> extends true ? T : never; export type { RejectReadonly };