resolveProps
resolveProps() function
Resolve all properties of an object that may be promises.
Signature:
declare function resolveProps<T extends object, Key = Exclude<keyof T, symbol>>(obj: T): Promise<{
[K in keyof T]: K extends Key ? Awaited<T[K]> : never;
}>;
Example
const obj = {
a: Promise.resolve(1),
b: 2,
c: Promise.resolve(3),
}
const result = await resolveProps(obj);
console.log(result); // { a: 1, b: 2, c: 3 }
Also, with this function, you can define asyncEvolve simply.
const asyncEvolve = <T extends object>(transformation:Transformation<T>) =>
(obj:T) => pipe(obj, evolve(transformation), resolveProps)
const a = await asyncEvolve({ a: async (a) => a + 1 })({ a: 1 });
console.log(a); // { a: 2 }
const resultByFormat = await asyncEvolve<Request>({
foo: async (foo) => await fetch(`https://example.com/foo/${foo}`).json(),
bar: async (bar) => await fetch(`https://example.com/bar/${bar}`).text(),
})
const result = await resultByFormat({foo: "foo", bar: "bar"});
console.log({
foo: result.foo,
bar: result.bar,
})