Drop Char

In this medium-level challenge, you'll implement the DropChar<S, C> type, that drops a specified char from a string.

Medium

Drop a specified char from a string.

For example:

[object Object]

Change the following code to make the test cases pass (no type check errors).

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Video Walkthrough

type DropChar<S, C extends string> = S extends `${infer Left}${C}${infer Right}`
  ? DropChar<`${Left}${Right}`, C>
  : S

How it works:

First we constrain the type C to be a string.
Then we use a template literal and infer to capture the the left and right parts of the string, surrounding the character to drop.
If the character to drop is found, we recursively pass the left and right parts of the string into DropChar<${Left}${Right}, C>.
If the character to drop is not found, we return the original string.

This challenge helps you understand TypeScript's advanced type system and how to apply this concept in real-world scenarios.