import type { IsLowerCase, IsUpperCase } from "./letter.js";
import type { IsDigit } from "./numeric.js";
import type { WordSeparators } from "./word-separators.js";
type SkipEmptyWord<Word extends string> = Word extends "" ? [] : [Word];
type RemoveLastCharacter<Sentence extends string, Character extends string> = Sentence extends `${infer LeftSide}${Character}` ? SkipEmptyWord<LeftSide> : never;
export type SplitWords<Sentence extends string, LastCharacter extends string = "", CurrentWord extends string = ""> = Sentence extends `${infer FirstCharacter}${infer RemainingCharacters}` ? FirstCharacter extends WordSeparators ? [...SkipEmptyWord<CurrentWord>, ...SplitWords<RemainingCharacters>] : LastCharacter extends "" ? SplitWords<RemainingCharacters, FirstCharacter, FirstCharacter> : [false, true] extends [IsDigit<LastCharacter>, IsDigit<FirstCharacter>] ? [...SkipEmptyWord<CurrentWord>, ...SplitWords<RemainingCharacters, FirstCharacter, FirstCharacter>] : [true, false] extends [IsDigit<LastCharacter>, IsDigit<FirstCharacter>] ? [...SkipEmptyWord<CurrentWord>, ...SplitWords<RemainingCharacters, FirstCharacter, FirstCharacter>] : [true, true] extends [IsDigit<LastCharacter>, IsDigit<FirstCharacter>] ? SplitWords<RemainingCharacters, FirstCharacter, `${CurrentWord}${FirstCharacter}`> : [true, true] extends [IsLowerCase<LastCharacter>, IsUpperCase<FirstCharacter>] ? [...SkipEmptyWord<CurrentWord>, ...SplitWords<RemainingCharacters, FirstCharacter, FirstCharacter>] : [true, true] extends [IsUpperCase<LastCharacter>, IsLowerCase<FirstCharacter>] ? [...RemoveLastCharacter<CurrentWord, LastCharacter>, ...SplitWords<RemainingCharacters, FirstCharacter, `${LastCharacter}${FirstCharacter}`>] : SplitWords<RemainingCharacters, FirstCharacter, `${CurrentWord}${FirstCharacter}`> : [...SkipEmptyWord<CurrentWord>];
/**
 * Split a string into words.
 * Words are separated by spaces, underscores, dashes, or changes in casing.
 */
export declare function splitWords<T extends string>(string: T): SplitWords<T>;
export {};
//# sourceMappingURL=split-words.d.ts.map