/**
 * @license
 * Copyright 2019 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
function nodeEndpoint(nep) {
    const listeners = new WeakMap();
    return {
        postMessage: nep.postMessage.bind(nep),
        addEventListener: (_, eh) => {
            const l = (data) => {
                if ("handleEvent" in eh) {
                    eh.handleEvent({ data });
                }
                else {
                    eh({ data });
                }
            };
            nep.on("message", l);
            listeners.set(eh, l);
        },
        removeEventListener: (_, eh) => {
            const l = listeners.get(eh);
            if (!l) {
                return;
            }
            nep.off("message", l);
            listeners.delete(eh);
        },
        start: nep.start && nep.start.bind(nep),
    };
}

export { nodeEndpoint as default };
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