/**
 * Copied from https://github.com/blakeembrey/change-case/blob/main/packages/change-case/src/index.ts
 *
 * Reason: keep CLI casing helpers local and dependency-free.
 */
/**
 * Supported locale values. Use `false` to ignore locale.
 * Defaults to `undefined`, which uses the host environment.
 */
export type Locale = string[] | string | false | undefined;
/**
 * Options used for converting strings to pascal/camel case.
 */
export interface PascalCaseOptions extends Options {
    /** Merge ambiguous characters before applying PascalCase conversion. */
    mergeAmbiguousCharacters?: boolean;
}
/**
 * Options used for converting strings to any case.
 */
export interface Options {
    /** Locale passed to `String.prototype.toLocaleLowerCase` and `toLocaleUpperCase`. */
    locale?: Locale;
    /** Custom word splitter used before applying the requested case conversion. */
    split?: (value: string) => string[];
    /**
     * Enables legacy number splitting during word normalization.
     *
     * @deprecated Pass `split: splitSeparateNumbers` instead.
     */
    separateNumbers?: boolean;
    /** Delimiter inserted between normalized words for delimiter-based cases. */
    delimiter?: string;
    /** Characters preserved at the beginning of the converted value. */
    prefixCharacters?: string;
    /** Characters preserved at the end of the converted value. */
    suffixCharacters?: string;
}
/**
 * Split any cased input strings into an array of words.
 */
export declare function split(value: string): string[];
/**
 * Split the input string into an array of words, separating numbers.
 */
export declare function splitSeparateNumbers(value: string): string[];
/**
 * Convert a string to space separated lower case (`foo bar`).
 */
export declare function noCase(input: string, options?: Options): string;
/**
 * Convert a string to camel case (`fooBar`).
 */
export declare function camelCase(input: string, options?: PascalCaseOptions): string;
/**
 * Convert a string to pascal case (`FooBar`).
 */
export declare function pascalCase(input: string, options?: PascalCaseOptions): string;
/**
 * Convert a string to pascal snake case (`Foo_Bar`).
 */
export declare function pascalSnakeCase(input: string, options?: Options): string;
/**
 * Convert a string to capital case (`Foo Bar`).
 */
export declare function capitalCase(input: string, options?: Options): string;
/**
 * Convert a string to constant case (`FOO_BAR`).
 */
export declare function constantCase(input: string, options?: Options): string;
/**
 * Convert a string to dot case (`foo.bar`).
 */
export declare function dotCase(input: string, options?: Options): string;
/**
 * Convert a string to kebab case (`foo-bar`).
 */
export declare function kebabCase(input: string, options?: Options): string;
/**
 * Convert a string to path case (`foo/bar`).
 */
export declare function pathCase(input: string, options?: Options): string;
/**
 * Convert a string to path case (`Foo bar`).
 */
export declare function sentenceCase(input: string, options?: Options): string;
/**
 * Convert a string to snake case (`foo_bar`).
 */
export declare function snakeCase(input: string, options?: Options): string;
/**
 * Convert a string to header case (`Foo-Bar`).
 */
export declare function trainCase(input: string, options?: Options): string;
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