/**
 * A map of named listener sets. Each key maps to a `ListenerSet` that can have
 * multiple listeners registered. Typed through `T` so that `register` and
 * `compose` preserve per-key callback signatures.
 *
 * All keys are pre-initialized in the constructor so `register` can validate
 * keys. `compose()` only includes keys with at least one registered listener,
 * preserving callback-presence semantics used by the client as feature guards.
 * For included keys, composed functions delegate to the live listener set, so
 * listeners added/removed after `compose()` still take effect. Keys with no
 * listeners at compose time are omitted entirely; call `compose()` again after
 * registering listeners to pick up newly populated keys.
 */
export declare class ListenerMap<T extends Record<string, ((...args: never[]) => void) | undefined>> {
    private sets;
    constructor(keys: readonly (keyof T & string)[]);
    /**
     * Register listeners for one or more keys. Returns a function that removes
     * all listeners added by this call.
     */
    register(callbacks: Partial<T>): () => void;
    /**
     * Compose all registered listeners into a single callbacks object. Each
     * composed function delegates to the live listener set, so listeners
     * added/removed after this call still take effect.
     */
    compose(): Partial<T>;
}
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