import { StylableMeta } from './stylable-meta';
import { StylableResolver } from './stylable-resolver';
import { ParsedValue } from './types';
export interface Box<Type extends string, Value extends any> {
    type: Type;
    value: Value;
}
export declare function box<Type extends string, Value extends any>(type: Type, value: Value): Box<Type, Value>;
export declare function unbox<B extends Box<string, unknown>>(boxed: B | string): any;
export interface BoxedValueMap {
    [k: string]: string | Box<string, unknown>;
}
export declare type BoxedValueArray = Array<string | Box<string, unknown>>;
declare type CustomTypes = Record<string, CustomValueExtension<any>>;
export interface CustomValueExtension<T> {
    evalVarAst(valueAst: ParsedValue, customTypes: {
        [typeID: string]: CustomValueExtension<unknown>;
    }): Box<string, T>;
    getValue(path: string[], value: Box<string, T>, node: ParsedValue, customTypes: CustomTypes): string;
}
export declare const stTypes: CustomTypes;
export declare const CustomValueStrategy: {
    args: (fnNode: ParsedValue, customTypes: CustomTypes) => (string | Box<string, any>)[];
    named: (fnNode: ParsedValue, customTypes: CustomTypes) => BoxedValueMap;
};
export interface JSValueExtension<Value> {
    _kind: 'CustomValue';
    register(localTypeSymbol: string): CustomValueExtension<Value>;
}
interface ExtensionApi<Value, Args> {
    processArgs: (fnNode: ParsedValue, customTypes: CustomTypes) => Args;
    createValue: (args: Args) => Value;
    getValue: (v: Value, key: string) => string | Box<string, unknown>;
    flattenValue?: (v: Box<string, Value>) => {
        parts: Array<string | Box<string, unknown>>;
        delimiter: ',' | ' ';
    };
}
export declare function resolveCustomValues(meta: StylableMeta, resolver: StylableResolver): {
    [x: string]: CustomValueExtension<any>;
};
export declare function createCustomValue<Value, Args>({ processArgs, createValue, flattenValue, getValue, }: ExtensionApi<Value, Args>): JSValueExtension<Value>;
export declare function getBoxValue(path: string[], value: string | Box<string, unknown>, node: ParsedValue, customTypes: CustomTypes): string;
export declare function isCustomValue(symbol: any): symbol is JSValueExtension<unknown>;
export {};
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