argsArgArrayOrObject.tsā¢986 B
const { isArray } = Array;
const { getPrototypeOf, prototype: objectProto, keys: getKeys } = Object;
/**
* Used in functions where either a list of arguments, a single array of arguments, or a
* dictionary of arguments can be returned. Returns an object with an `args` property with
* the arguments in an array, if it is a dictionary, it will also return the `keys` in another
* property.
*/
export function argsArgArrayOrObject<T, O extends Record<string, T>>(args: T[] | [O] | [T[]]): { args: T[]; keys: string[] | null } {
if (args.length === 1) {
const first = args[0];
if (isArray(first)) {
return { args: first, keys: null };
}
if (isPOJO(first)) {
const keys = getKeys(first);
return {
args: keys.map((key) => first[key]),
keys,
};
}
}
return { args: args as T[], keys: null };
}
function isPOJO(obj: any): obj is object {
return obj && typeof obj === 'object' && getPrototypeOf(obj) === objectProto;
}