Can we define a string type that must start with a specific prefix? For instance, like this:
type Path = 'site/' + string;
let path1: Path = 'site/index'; // Valid
let path2: Path = 'app/index'; // Invalid
Can we define a string type that must start with a specific prefix? For instance, like this:
type Path = 'site/' + string;
let path1: Path = 'site/index'; // Valid
let path2: Path = 'app/index'; // Invalid
I am not certain about how to accomplish this, but it seems to be related to an ongoing discussion in the TypeScript community that I have been following closely, especially this particular comment. Does this align with your specific needs?
Although it may not be implemented anytime soon, there is a possibility of defining such types statically if TypeScript were to introduce new types like StringConcat as suggested in this comment. For now, my recommendation would be to utilize RegExp for validating strings of this nature.
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