functionsIn

object

Creates an array of function property names from own and inherited enumerable properties of object.

Installation

Import

import { functionsIn } from '@tulx/utils';

Source Code

Implementation

/**
 * Creates an array of function property names from own and inherited enumerable properties of object.
 *
 * @param object - The object to inspect.
 * @returns Returns the function names.
 *
 * @example
 * ```ts
 * function Foo() {
 *   this.a = () => 'a';
 *   this.b = () => 'b';
 * }
 * Foo.prototype.c = () => 'c';
 * functionsIn(new Foo()); // ['a', 'b', 'c']
 * ```
 */
export function functionsIn(object: Record<string, unknown>): string[] {
  const result: string[] = [];
  for (const key in object) {
    if (typeof object[key] === 'function') {
      result.push(key);
    }
  }
  return result;
}

Example

import { functionsIn } from '@tulx/utils';

function Foo() {
this.a = () => 'a';
this.b = () => 'b';
}
Foo.prototype.c = () => 'c';
functionsIn(new Foo()); // ['a', 'b', 'c']

Related Functions

assign

Assigns own enumerable string keyed properties of source objects to the destination object.

assignIn

This method is like assign except that it iterates over own and inherited source properties.

assignInWith

This method is like assignIn except that it accepts customizer which is invoked to produce the assigned values.

assignWith

This method is like assign except that it accepts customizer which is invoked to produce the assigned values.

Creates an array of values corresponding to paths of object.

create

Creates an object that inherits from the prototype object.