Safely convert enum to array

enumToArray.test.ts

import enumToArray from "./enumToArray";

enum Numbers {
    One = 'One',
    Two = 'Two',
    Three = 'Three'
};

enum Empty {}


describe('enumToArray', () => {
    test('simple enum', () => {
        const expectedResult = ['One', 'Two', 'Three'];

        expect(enumToArray(Numbers))
            .toStrictEqual(expectedResult);
    });

    test('Empty enum', () => {
        const expectedResult:any[] = [];

        expect(enumToArray(Empty))
            .toStrictEqual(expectedResult);
    });
    
});

enumToArray.ts

/**
 * @description Safely convert enum object to array of values
 * IMPORTANT: to avoid index-key bugs use eslint rule "@typescript-eslint/prefer-enum-initializers"
 * more details here: https://www.typescriptlang.org/docs/handbook/enums.html
 */ 
const enumToArray = (enumObject: object):Array<string> => {
    let result:Array<string> = [];

    for (const key in enumObject) {
        if (
            enumObject.hasOwnProperty(key)
        ) {
            const value = enumObject[key as keyof object];
            result.push(value);
        }
    }
    
    return result;
}

export default enumToArray;