@itwin/presentation-common/lib/esm/presentation-common/Utils.d.ts

Common pieces for iModel.js presentation packages

/** @packageDocumentation
 * @module Core
 */
import { KeySet } from "./KeySet.js";
/**
 * Create a type with `T` properties excluding properties listed in `K`.
 *
 * Usage example: `Omit<SomeType, "exclude_prop1" | "exclude_prop2">`
 *
 * @public
 */
export type Omit<T, K> = Pick<T, Exclude<keyof T, K>>;
/**
 * Create a type with `T` properties excluding all properties in type `K`.
 *
 * Usage example: `Subtract<SomeType, ExcludePropertiesInThisType>`
 *
 * @public
 */
export type Subtract<T, K> = Omit<T, keyof K>;
/**
 * Create a type from given type `T` and make specified properties optional.
 * @public
 */
export type PartialBy<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>;
/**
 * A dictionary data structure.
 * @public
 */
export interface ValuesDictionary<T> {
    [key: string]: T;
}
/**
 * A structure for paged responses
 * @public
 */
export interface PagedResponse<T> {
    /** Total number of items */
    total: number;
    /** Items for the requested page  */
    items: T[];
}
/**
 * Get total number of instances included in the supplied key set. The
 * count is calculated by adding all of the following:
 * - `keys.instanceKeysCount`
 * - number of `keys.nodeKeys` which are *ECInstance* keys
 * - for every grouping node key in `keys.nodeKeys`, number of grouped instances
 *
 * E.g. if `keys` contains one instance key, one *ECInstance* node key
 * and one grouping node key which groups 3 instances, the result is 5.
 *
 * @public
 */
export declare const getInstancesCount: (keys: Readonly<KeySet>) => number;
/**
 * Default (recommended) keyset batch size for cases when it needs to be sent
 * over HTTP. Sending keys in batches helps avoid HTTP413 error.
 *
 * @public
 */
export declare const DEFAULT_KEYS_BATCH_SIZE = 5000;
/**
 * Removes all `undefined` properties from given `obj` object and returns
 * the same (mutated) object.
 *
 * Example: `omitUndefined({ a: 1, b: undefined })` will return `{ a: 1 }`
 *
 * @internal
 */
export declare function omitUndefined<T extends object>(obj: T): T;
/** @internal */
type NullToUndefined<T> = T extends null ? undefined : T extends Array<infer U> ? Array<NullToUndefined<U>> : T extends object ? {
    [K in keyof T]: NullToUndefined<T[K]>;
} : T;
/** @internal */
export declare function deepReplaceNullsToUndefined<T>(obj: T): NullToUndefined<T>;
/** @internal */
export declare function createCancellableTimeoutPromise(timeoutMs: number): {
    promise: Promise<void>;
    cancel: () => void;
};
export {};
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