TypeScript enum to object array

Question

I have an enum defined this way:

export enum GoalProgressMeasurements {
    Percentage = 1,
    Numeric_Target = 2,
    Completed_Tasks = 3,
    Average_Mile         


        

Answer 1

Enums are real objects that exist at runtime. So you are able to reverse the mapping doing something like this:

let value = GoalProgressMeasurements.Not_Measured;
console.log(GoalProgressMeasurements[value]);
// => Not_Measured

Based on that you can use the following code:

export enum GoalProgressMeasurements {
    Percentage = 1,
    Numeric_Target = 2,
    Completed_Tasks = 3,
    Average_Milestone_Progress = 4,
    Not_Measured = 5
}

let map: {id: number; name: string}[] = [];

for(var n in GoalProgressMeasurements) {
    if (typeof GoalProgressMeasurements[n] === 'number') {
        map.push({id: GoalProgressMeasurements[n], name: n});
    }
}

console.log(map);

Reference: https://www.typescriptlang.org/docs/handbook/enums.html