/**
 * The prefix to add to rewritten scss variables
 * @type {string}
 */
export declare const SCSS_VARIABLE_REWRITE_PREFIX = "--__REWRITTEN_SCSS_VARIABLE__";
/**
 * The prefix to add to temporary scss variables
 * @type {string}
 */
export declare const SCSS_TEMPORARY_PREFIX = "__TEMPORARY_SCSS_VARIABLE__";
/**
 * A Regular Expression to match SCSS variables
 * @type {RegExp}
 */
export declare const scssVariableRegex: {};
/**
 * The prefix for SCSS variables
 * @type {string}
 */
export declare const scssVariablePrefix = "$";
/**
 * The prefix for CSS Custom properties
 * @type {string}
 */
export declare const cssCustomPropertyPrefix = "--";
/**
 * A Regular Expression to match CSS Custom Properties
 * @type {RegExp}
 */
export declare const cssCustomPropertyRegex: any;
/**
 * A Regular Expression to match SCSS variables and/or CSS custom properties
 * @type {RegExp}
 */
export declare const customPropertyRegex: {};
/**
 * A Regular Expression to match references to SCSS variables and/or CSS custom properties
 * @type {RegExp}
 */
export declare const variableReferenceRegex: {};
/**
 * A Regular Expression to match references to SCSS variables
 * @type {RegExp}
 */
export declare const scssVariableReferenceRegex: {};
/**
 * A regular expression for matching usage of default values for  CSS Custom properties
 * @type {RegExp}
 */
export declare const cssCustomPropertyReferenceRegex: {};
/**
 * A Regular Expression to match references to SCSS variables and/or CSS custom properties
 * @type {RegExp}
 */
export declare const variableReferenceRegexGlobal: {};
/**
 * Returns true if the given value contains one or more variable references
 * @param {string} value
 * @returns {boolean}
 */
export declare function containsVariableReference(value: string): boolean;
/**
 * Returns true if the given value contains one or more SCSS variable references
 * @param {string} value
 * @returns {boolean}
 */
export declare function containsScssVariableReference(value: string): boolean;
/**
 * Returns true if the given value contains one or more CSS Custom property references
 * @param {string} value
 * @returns {boolean}
 */
export declare function containsCSSCustomPropertyReference(value: string): boolean;
/**
 * Replaces all references to variables by the values of those variables
 * @param {string} prop
 * @param {string} value
 * @param {object} variables
 * @returns {string}
 */
export declare function replaceVariableReferences(prop: string, value: string, variables: {
    [key: string]: string;
}): string;
/**
 * Takes the name for a CSS Custom Property reference.
 * If it has a default value, it will be discarded
 * @param {string} value
 * @returns {string?}
 */
export declare function takeFirstVariableReferenceName(value: string): string;
/**
 * Takes the default value for the provided CSS Custom Property
 * @param {string} value
 * @returns {string?}
 */
export declare function takeDefaultValueForCSSCustomProperty(value: string): string | undefined;
/**
 * Returns true if the given property is a SCSS variable declaration
 * @param {string} property
 * @returns {boolean}
 */
export declare function isScssVariable(property: string): boolean;
/**
 * Returns true if the given property is a variable declaration
 * @param {string} property
 * @returns {boolean}
 */
export declare function isCustomProperty(property: string): boolean;
/**
 * Escapes the given value
 * @param {string} value
 * @returns {string}
 */
export declare function escapeValue(value: string): string;
/**
 * Returns true if the given property is a CSS Custom property
 * @param {string} property
 * @returns {boolean}
 */
export declare function isCSSCustomProperty(property: string): boolean;