export interface GluegunStrings {
    /**
     * Returns itself.
     */
    identity(value: string): string;
    /**
     * Is this string blank, null, or otherwise empty?
     */
    isBlank(value: string): boolean;
    /**
     * This is not a string? Are you not entertained?
     */
    isNotString(value: any): boolean;
    /**
     * Converts a string toCamelCase.
     */
    camelCase(value: string): string;
    /**
     * Converts a string to-kebab-case.
     */
    kebabCase(value: string): string;
    /**
     * Converts a string to_snake_case.
     */
    snakeCase(value: string): string;
    /**
     * Converts a string TO UPPER CASE.
     */
    upperCase(value: string): string;
    /**
     * Converts a string to lower case.
     */
    lowerCase(value: string): string;
    /**
     * Converts a string To start case.
     */
    startCase(value: string): string;
    /**
     * Converts the first character Of Every Word To Upper.
     */
    upperFirst(value: string): string;
    /**
     * Converts the first character oF eVERY wORD tO lOWER.
     */
    lowerFirst(value: string): string;
    /**
     * Converts a string ToPascalCase.
     */
    pascalCase(value: string): string;
    /**
     * Pads a string with `chars` (spaces default) to `length` characters long, effectively centering the string.
     */
    pad(sourceString: string, length: number, chars?: string): string;
    /**
     * Pads the start of `string` with `chars` (spaces default) to `length` characters.
     */
    padStart(sourceString: string, length: number, chars?: string): string;
    /**
     * Pads the end of `string` with `chars` (spaces default) to `length` characters.
     */
    padEnd(sourceString: string, length: number, chars?: string): string;
    /**
     * Strips whitespace from a string.
     */
    trim(sourceString: string, chars?: string): string;
    /**
     * Strips whitespace from the start of a string.
     */
    trimStart(sourceString: string, chars?: string): string;
    /**
     * Strips whitespace from the end of a string.
     */
    trimEnd(sourceString: string, chars?: string): string;
    /**
     * Repeats a `string` a `numberOfTimes`.
     */
    repeat(sourceString: string, numberOfTimes: number): string;
    /**
     * Pluralize or singularize a word based on the passed in count.
     */
    pluralize(word: string, count?: number, inclusive?: boolean): string;
    /**
     * Pluralize a word based.
     */
    plural(word: string): string;
    /**
     * Singularize a word based.
     */
    singular(word: string): string;
    /**
     * Add a pluralization rule to the collection.
     */
    addPluralRule(rule: string | RegExp, replacement: string): void;
    /**
     * Add a singularization rule to the collection.
     */
    addSingularRule(rule: string | RegExp, replacement: string): void;
    /**
     * Add an irregular word definition.
     */
    addIrregularRule(single: string, plural: string): void;
    /**
     * Add an uncountable word rule.
     */
    addUncountableRule(word: string | RegExp): void;
    /**
     * Test if provided word is plural.
     */
    isPlural(word: string): boolean;
    /**
     * Test if provided word is singular.
     */
    isSingular(word: string): boolean;
}