#116 - Replace (#117)

Co-authored-by: Anthony Fu <11247099+antfu@users.noreply.github.com>

questions/116-medium-replace/README.md

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+Implement `Replace<S, From, To>` which replace the string `From` with `To` once in the given string `S`
+
+For example
+
+```ts
+type replaced = Replace<'types are fun!', 'fun', 'awesome'> // expected to be 'types are awesome!'
+```

questions/116-medium-replace/info.yml

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+difficulty: medium
+title: Replace
+tags: template-string
+tsconfig:
+  ts: 4.1.0-pr-40336-88
+author:
+  github: antfu
+  name: Anthony Fu
+

questions/116-medium-replace/template.ts

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+type Replace<S extends string, From extends string, To extends string> = any

questions/116-medium-replace/test-cases.ts

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+import { Equal, Expect } from '@type-challenges/utils'
+
+type cases = [
+  Expect<Equal<Replace<'foobar', 'bar', 'foo'>, 'foofoo'>>,
+  Expect<Equal<Replace<'foobarbar', 'bar', 'foo'>, 'foofoobar'>>,
+  Expect<Equal<Replace<'foobarbar', '', 'foo'>, 'foobarbar'>>,
+  Expect<Equal<Replace<'', '', ''>, ''>>,
+]