chromium/third_party/blink/renderer/modules/service_worker/service_worker.idl

/*
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// https://w3c.github.io/ServiceWorker/#serviceworker-interface

enum ServiceWorkerState {
    "installing",
    "installed",
    "activating",
    "activated",
    "redundant"
};

[
    ActiveScriptWrappable,
    SecureContext,
    // TODO(https://crbug.com/999023): Expose this to Worker (not only to
    // ServiceWorker) after Service Worker APIs are supported on dedicated
    // workers and shared workers.
    Exposed=(Window,ServiceWorker)
] interface ServiceWorker : EventTarget {

    [CallWith=ScriptState, RaisesException] void postMessage(any message, sequence<object> transfer);
    [CallWith=ScriptState, RaisesException] void postMessage(any message, optional PostMessageOptions options = {});

    readonly attribute USVString scriptURL;
    readonly attribute ServiceWorkerState  state;

    attribute EventHandler onstatechange;
};

ServiceWorker includes AbstractWorker;