export declare class Plugins {
    cssFunctions: {
        [index: string]: Function;
    };
    declarationReplacers: Function[];
    private regex;
    constructor();
    addCssFunction(funcName: string, func: Function): void;
    addDeclarationReplacer(func: Function): void;
    resetPlugins(): void;
    isSupportedFunction(str: any): boolean;
    getFunctionSignature(str: string): {
        funcName: string;
        args: string[];
    };
    private updateRegex;
    private extractArguments;
}