Array to enum in typescript with different solutions

 Question:

How can one convert an array to an enum in TypeScript? Provide various solutions for this task and explain each approach.

Answer: Converting an array to an enum in TypeScript involves mapping the array values to corresponding enum members. Below are several solutions to achieve this:

1. Manual Mapping:

   In this approach, you manually create an enum and map the array values to its members.

   typescript
   enum Color {
       Red = 'Red',
       Green = 'Green',
       Blue = 'Blue',
   }
   
   const colorArray = ['Red', 'Green', 'Blue'];
   
   const colorEnum: { [key: string]: Color } = {};
   colorArray.forEach(color => {
       colorEnum[color] = color as Color;
   });
   
   console.log(colorEnum); // { Red: 'Red', Green: 'Green', Blue: 'Blue' }

2. Enum with Union Type:

   Utilize a union type by combining the array values to create a dynamic enum.

   typescript
   const colorArray = ['Red', 'Green', 'Blue'] as const;
   type Color = typeof colorArray[number];
   
   console.log(Color.Red); // 'Red'

3. Enum with Object Mapping:

   Create an enum by mapping array values to an object with enum-like properties.

   typescript
   const colorArray = ['Red', 'Green', 'Blue'];
   
   const ColorEnum = Object.freeze({
       Red: colorArray[0],
       Green: colorArray[1],
       Blue: colorArray[2],
   });
   
   console.log(ColorEnum); // { Red: 'Red', Green: 'Green', Blue: 'Blue' }

These are just a few examples, and the choice of method depends on the specific use case and preferences. Each approach provides a way to convert an array to an enum in TypeScript, allowing for flexibility in implementation.