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- 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;
- }
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