I'm a beginner in JavaScript and I've created a custom type called "Stage". My goal is to convert strings to this custom type. The strings will always match one of these values exactly (with the first letter capitalized and written the same way). I've attempted to use .find() but it doesn't seem to be the right approach since it works with arrays. Any assistance would be greatly appreciated!
type Stage = 'First' | 'Second';
When working with TypeScript, the concept of the type Stage... statement can be a bit perplexing as it generates a type alias rather than an actual type. Converting a string into Stage during runtime is unnecessary because, at that point, a Stage essentially equates to a string.
If you are in search of a solution that allows for easy conversion between strings and a defined set of values, consider using a TypeScript enum. This construct enables the creation of an object that facilitates seamless conversion between strings and values. Take a look at this sample test/demo routine:
import test from 'ava';
enum Stage {
First = 1,
Second = 2
}
test('Testing Stage conversion between string and number ', t=> {
const stringName = "First";
t.is(Stage.First, 1);
t.is(Stage[stringName], 1);
t.is(Stage.Second, 2);
t.is(Stage[1], "First");
t.is(Stage[2], "Second");
t.is(Stage["foo"], undefined);
t.pass();
})
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