/**
 * Variable name conversion helper class.
 *
 * Used to easily convert a variable name to camelCase, kebab-case, and so on.
 */
export default class VariableName {
	#private;
	keepCase: boolean;
	/**
	 * @param str - Any form of the variable name to be converted.
	 * @param keepCase - Should it maintain case sensitivity when converting to kebab-case, snake_case, etc.?
	 */
	constructor(str: string, keepCase?: boolean);
	/**
	 * Reset the value.
	 * @param str - Any form of the variable name.
	 */
	set value(str: string);
	/**
	 * Convert to kebab-case.
	 */
	get kebab(): string;
	/**
	 * Convert to snake_case.
	 */
	get snake(): string;
	/**
	 * Convert to CONSTANT_CASE.
	 */
	get const(): string;
	/**
	 * Convert to PascalCase.
	 */
	get pascal(): string;
	/**
	 * Convert to camelCase.
	 */
	get camel(): string;
	/**
	 * Convert to lowercase without any separators.
	 */
	get lower(): string;
	/**
	 * Convert to UPPERCASE without any separators.
	 */
	get upper(): string;
	/**
	 * Convert to word case, separated by spaces, all in lowercase.
	 */
	get words(): string;
	/**
	 * Convert to Sentence case, separated by spaces, with only the first letter of the sentence capitalized.
	 */
	get sentence(): string;
	/**
	 * Convert to Title Case, separated by spaces, with all first letters of words capitalized.
	 */
	get title(): string;
	/**
	 * Convert to --css-custom-property-name-form, which is kebab-case with two dashes as the prefix.
	 */
	get cssVar(): string;
	/**
	 * Convert to css-property-name-form / -webkit-css-property-name-form, which just like kebab-case,
	 * but if the first word is in "webkit", "moz", "ms", "o", it will use one dash as the prefix.
	 */
	get cssProp(): string;
	/**
	 * Convert to dot.case.
	 */
	get dot(): string;
	/**
	 * Convert to *nix path/case.
	 */
	get path(): string;
	/**
	 * Convert to DOS path\\alt\\case.
	 */
	get pathAlt(): string;
	/**
	 * Convert to Train-Case.
	 */
	get train(): string;
	/**
	 * Convert to COBOL-CASE.
	 */
	get cobol(): string;
	/**
	 * Convert to Pascal_Snake_Case.
	 */
	get pascalSnake(): string;
	/**
	 * Convert to camel_Snake_Case.
	 */
	get camelSnake(): string;
	/**
	 * Check if all letters in the string are uppercase (ignoring numbers, punctuation, etc.).
	 * @param str - String.
	 * @returns Are all letters uppercase?
	 */
	static areAllUpper(str: string): boolean;
	toString(): string;
	toJSON(): string;
}