Differentiating between TypeScript string literal types and enums

Is it better to use enum or string literal type in TypeScript?

String literal type:

export type Animal = {
    id : number,
    name : string,
    type : "dog" | "cat"
}

Enum:

export enum Type{
    dog = "dog",
    cat = "cat"
}

export type Animal = {
    id : number,
    name : string,
    type : Type
}

When should I choose one over the other? Are there any best practices or conventions to follow? If the enum is only used by one class and component, is there a significant difference?

Answer №1

Enums in programming are helpful for defining a set of constant names, like directions or statuses.

String literals are used to narrow down the exact values that a variable can hold, such as "active," "inactive," or "pending."

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