Typescript - string concatenation as type

Question

Is it possible to do some rudimentary string manipulations, as you're converting literal unions to type names?

Example:

type Strings = "Fork" | "Spoon";

type GetMethods = { // I want this to be automatically generated basing on Strings
   getFork: Function,
   getSpoon: Function
}

spender · Accepted Answer · 2020-11-06 11:57:35Z

2

In TypeScript v.4.1, (which looks like it will be released in less than 2 weeks time) you can use Template Literal Types to do this really easily:

type Strings = "Fork" | "Spoon";

type FuncNames = `get${Strings}`;

type GetMethods = { [K in FuncNames]: Function }

Playground link

Prior to TS4.1, it doesn't look like this is possible.

edited Nov 6, 2020 at 11:57

answered Nov 6, 2020 at 11:50

spender

121k36 gold badges245 silver badges369 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Typescript - string concatenation as type

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related