@blueprintjs/icons/src/type-utils/utilities.ts

Components, fonts, icons, and css files for creating and displaying icons.

/**
Recursively split a string literal into two parts on the first occurence of the given string, returning an array literal of all the separate parts.
*/
export type Split<S extends string, D extends string> = string extends S
    ? string[]
    : S extends ""
      ? []
      : S extends `${infer T}${D}${infer U}`
        ? [T, ...Split<U, D>]
        : [S];