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resolveMap() function
Resolve entries of an object into a new object with the same keys. If one or more entries of the source object are resolved to a promise by the resolver function, this method returns a promise which will be resolved to the new object with fully resolved entries.
Signature:
export declare function resolveMap<T, V>(map: MapObject<T>, resolver: (val: T, key: string, values: MapObject<T>) => ValueOrPromise<V>): ValueOrPromise<MapObject<V>>;
Parameters
| Parameter | Type | Description |
|---|---|---|
| map | MapObject<T> | The original object containing the source entries |
| resolver | (val: T, key: string, values: MapObject<T>) => ValueOrPromise<V> | A function resolves an entry to a value or promise. It will be invoked with the property value, the property name, and the source object. |
Returns:
Example
- Example 1: resolve all entries synchronously
const result = resolveMap({a: 'x', b: 'y'}, v => v.toUpperCase());
The result will be {a: 'X', b: 'Y'}.
- Example 2: resolve one or more entries asynchronously
const result = resolveMap({a: 'x', b: 'y'}, v =>
Promise.resolve(v.toUpperCase()),
);
The result will be a promise of {a: 'X', b: 'Y'}.