@apollo/query-planner/dist/utilities/array.d.ts

Apollo Query Planner

export declare function compactMap<T, U>(array: T[], callbackfn: (value: T, index: number, array: T[]) => U | null | undefined): U[];
export declare function partition<T, U extends T>(array: T[], predicate: (element: T, index: number, array: T[]) => element is U): [U[], T[]];
export declare function partition<T>(array: T[], predicate: (element: T, index: number, array: T[]) => boolean): [T[], T[]];
export declare function findAndExtract<T>(array: T[], predicate: (element: T, index: number, array: T[]) => boolean): [T | undefined, T[]];
export declare function groupBy<T, U>(keyFunction: (element: T) => U): (iterable: Iterable<T>) => Map<U, T[]>;
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