import { ModuleLocator } from '@glimmer/interfaces';
/**
 * The ModuleLocatorMap is a map-like data structure that accepts a
 * ModuleLocator as the key. Instead of relying on a locator's identity to
 * determine uniqueness, it instead indexes values based on the locator's
 * `module` and `name` properties.
 *
 * This means you can use different object literals as locators to get and set
 * values from the map, even if though they do not share identity:
 *
 * ```ts
 * let map = new ModuleLocatorMap<number>;
 * map.set({ module: 'foo', name: 'default' }, 123);
 * map.get({ module: 'foo', name: 'default' }); // returns 123
 * ```
 */
export default class ModuleLocatorMap<V, K extends ModuleLocator = ModuleLocator> {
    private byModule;
    private locators;
    set(locator: K, value: V): this;
    get({ module, name }: K): V | undefined;
    forEach(cb: (value: V, key: K) => void): void;
    private _byName;
}
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