import { ModuleLocator, TemplateLocator, AnnotatedModuleLocator } from '@glimmer/interfaces';
export interface Builtins<TemplateMeta = {}> {
    [key: string]: BuiltinLocator<TemplateMeta>;
}
export declare type BuiltinLocator<TemplateMeta> = TemplateLocator<TemplateMeta> | HelperLocator | ModuleLocator;
/**
 * There are two ways helpers may be implemented in libraries:
 *
 * 1. A "user helper" that is a pure JavaScript function that takes one or more
 *    parameters and named arguments and returns a value.
 * 2. A "low-level helper", a factory function that takes the VM instance and a
 *    stable Arguments object and returns a Reference.
 *
 * Encoding which type a helper is is important, because user helpers must be
 * wrapped in the appropriate Reference in order to function. Thus, locators for
 * a helper must notate whether the helper is low-level or not.
 */
export interface HelperLocator extends AnnotatedModuleLocator {
    kind: 'helper';
    meta: {
        factory?: boolean;
    };
}
export declare type ModulePath = string;
export declare type Name = string;
export declare type Identifier = string;
export interface BuiltinsMap<TemplateMeta = {}> {
    byName: Map<Name, ModulePath>;
    byIdentifier: Map<Identifier, BuiltinLocator<TemplateMeta>>;
    byModulePath: Map<ModulePath, Name>;
}