16 lines
632 B
TypeScript
16 lines
632 B
TypeScript
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/**
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* Map a function over an array and concatenate the results
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*/
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export declare function flatMap<T, U>(xs: T[], fn: ((x: T, i: number) => U[])): U[];
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/**
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* Flatten a list of lists into a list of elements
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*/
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export declare function flatten<T>(xs: T[][]): T[];
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/**
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* Partition a collection by removing and returning all elements that match a predicate
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*
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* Note: the input collection is modified in-place!
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*/
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export declare function partition<T>(collection: T[], pred: (x: T) => boolean): T[];
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export declare function indexBy<A, B>(xs: A[], fn: (a: A) => Promise<B>): Promise<Map<B, A[]>>;
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//# sourceMappingURL=arrays.d.ts.map
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