ts-utils

Extracts a union of all the characters in a string

@example
``typescript
ExtractCharacters<"Hello">; // "H" | "e" | "l" | "l" | "o"
`


Check if a string only includes characters from a given string
@example
`typescript
StringOnlyIncludes<"Hello", "0123456789-()">; // false
StringOnlyIncludes<"123-456-7890", "0123456789-()">; // true
`


Check if a string is alphanumeric

@example
`typescript
IsAlphaNumeric<"Hello">; // true
IsAlphaNumeric<"$^1fa">; // false
`


Typed version of Object.keys, returning strongly typed keys

@example
`typescript
const keys = keysOf({ a: 1, b: 2 }); // ["a", "b"]
typeof keys[0]; // "a" | "b"
``