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// node_modules/comlink/dist/esm/comlink.mjs
var proxyMarker = Symbol("Comlink.proxy");
var createEndpoint = Symbol("Comlink.endpoint");
var releaseProxy = Symbol("Comlink.releaseProxy");
var finalizer = Symbol("Comlink.finalizer");
var throwMarker = Symbol("Comlink.thrown");
var isObject = (val) => typeof val === "object" && val !== null || typeof val === "function";
var proxyTransferHandler = {
canHandle: (val) => isObject(val) && val[proxyMarker],
serialize(obj) {
const { port1, port2 } = new MessageChannel();
expose(obj, port1);
return [port2, [port2]];
},
deserialize(port) {
port.start();
return wrap(port);
}
};
var throwTransferHandler = {
canHandle: (value) => isObject(value) && throwMarker in value,
serialize({ value }) {
let serialized;
if (value instanceof Error) {
serialized = {
isError: true,
value: {
message: value.message,
name: value.name,
stack: value.stack
}
};
} else {
serialized = { isError: false, value };
}
return [serialized, []];
},
deserialize(serialized) {
if (serialized.isError) {
throw Object.assign(new Error(serialized.value.message), serialized.value);
}
throw serialized.value;
}
};
var transferHandlers = /* @__PURE__ */ new Map([
["proxy", proxyTransferHandler],
["throw", throwTransferHandler]
]);
function isAllowedOrigin(allowedOrigins, origin) {
for (const allowedOrigin of allowedOrigins) {
if (origin === allowedOrigin || allowedOrigin === "*") {
return true;
}
if (allowedOrigin instanceof RegExp && allowedOrigin.test(origin)) {
return true;
}
}
return false;
}
function expose(obj, ep = globalThis, allowedOrigins = ["*"]) {
ep.addEventListener("message", function callback(ev) {
if (!ev || !ev.data) {
return;
}
if (!isAllowedOrigin(allowedOrigins, ev.origin)) {
console.warn(`Invalid origin '${ev.origin}' for comlink proxy`);
return;
}
const { id, type, path } = Object.assign({ path: [] }, ev.data);
const argumentList = (ev.data.argumentList || []).map(fromWireValue);
let returnValue;
try {
const parent = path.slice(0, -1).reduce((obj2, prop) => obj2[prop], obj);
const rawValue = path.reduce((obj2, prop) => obj2[prop], obj);
switch (type) {
case "GET":
{
returnValue = rawValue;
}
break;
case "SET":
{
parent[path.slice(-1)[0]] = fromWireValue(ev.data.value);
returnValue = true;
}
break;
case "APPLY":
{
returnValue = rawValue.apply(parent, argumentList);
}
break;
case "CONSTRUCT":
{
const value = new rawValue(...argumentList);
returnValue = proxy(value);
}
break;
case "ENDPOINT":
{
const { port1, port2 } = new MessageChannel();
expose(obj, port2);
returnValue = transfer(port1, [port1]);
}
break;
case "RELEASE":
{
returnValue = void 0;
}
break;
default:
return;
}
} catch (value) {
returnValue = { value, [throwMarker]: 0 };
}
Promise.resolve(returnValue).catch((value) => {
return { value, [throwMarker]: 0 };
}).then((returnValue2) => {
const [wireValue, transferables] = toWireValue(returnValue2);
ep.postMessage(Object.assign(Object.assign({}, wireValue), { id }), transferables);
if (type === "RELEASE") {
ep.removeEventListener("message", callback);
closeEndPoint(ep);
if (finalizer in obj && typeof obj[finalizer] === "function") {
obj[finalizer]();
}
}
}).catch((error) => {
const [wireValue, transferables] = toWireValue({
value: new TypeError("Unserializable return value"),
[throwMarker]: 0
});
ep.postMessage(Object.assign(Object.assign({}, wireValue), { id }), transferables);
});
});
if (ep.start) {
ep.start();
}
}
function isMessagePort(endpoint) {
return endpoint.constructor.name === "MessagePort";
}
function closeEndPoint(endpoint) {
if (isMessagePort(endpoint))
endpoint.close();
}
function wrap(ep, target) {
const pendingListeners = /* @__PURE__ */ new Map();
ep.addEventListener("message", function handleMessage(ev) {
const { data } = ev;
if (!data || !data.id) {
return;
}
const resolver = pendingListeners.get(data.id);
if (!resolver) {
return;
}
try {
resolver(data);
} finally {
pendingListeners.delete(data.id);
}
});
return createProxy(ep, pendingListeners, [], target);
}
function throwIfProxyReleased(isReleased) {
if (isReleased) {
throw new Error("Proxy has been released and is not useable");
}
}
function releaseEndpoint(ep) {
return requestResponseMessage(ep, /* @__PURE__ */ new Map(), {
type: "RELEASE"
}).then(() => {
closeEndPoint(ep);
});
}
var proxyCounter = /* @__PURE__ */ new WeakMap();
var proxyFinalizers = "FinalizationRegistry" in globalThis && new FinalizationRegistry((ep) => {
const newCount = (proxyCounter.get(ep) || 0) - 1;
proxyCounter.set(ep, newCount);
if (newCount === 0) {
releaseEndpoint(ep);
}
});
function registerProxy(proxy2, ep) {
const newCount = (proxyCounter.get(ep) || 0) + 1;
proxyCounter.set(ep, newCount);
if (proxyFinalizers) {
proxyFinalizers.register(proxy2, ep, proxy2);
}
}
function unregisterProxy(proxy2) {
if (proxyFinalizers) {
proxyFinalizers.unregister(proxy2);
}
}
function createProxy(ep, pendingListeners, path = [], target = function() {
}) {
let isProxyReleased = false;
const proxy2 = new Proxy(target, {
get(_target, prop) {
throwIfProxyReleased(isProxyReleased);
if (prop === releaseProxy) {
return () => {
unregisterProxy(proxy2);
releaseEndpoint(ep);
pendingListeners.clear();
isProxyReleased = true;
};
}
if (prop === "then") {
if (path.length === 0) {
return { then: () => proxy2 };
}
const r = requestResponseMessage(ep, pendingListeners, {
type: "GET",
path: path.map((p) => p.toString())
}).then(fromWireValue);
return r.then.bind(r);
}
return createProxy(ep, pendingListeners, [...path, prop]);
},
set(_target, prop, rawValue) {
throwIfProxyReleased(isProxyReleased);
const [value, transferables] = toWireValue(rawValue);
return requestResponseMessage(ep, pendingListeners, {
type: "SET",
path: [...path, prop].map((p) => p.toString()),
value
}, transferables).then(fromWireValue);
},
apply(_target, _thisArg, rawArgumentList) {
throwIfProxyReleased(isProxyReleased);
const last = path[path.length - 1];
if (last === createEndpoint) {
return requestResponseMessage(ep, pendingListeners, {
type: "ENDPOINT"
}).then(fromWireValue);
}
if (last === "bind") {
return createProxy(ep, pendingListeners, path.slice(0, -1));
}
const [argumentList, transferables] = processArguments(rawArgumentList);
return requestResponseMessage(ep, pendingListeners, {
type: "APPLY",
path: path.map((p) => p.toString()),
argumentList
}, transferables).then(fromWireValue);
},
construct(_target, rawArgumentList) {
throwIfProxyReleased(isProxyReleased);
const [argumentList, transferables] = processArguments(rawArgumentList);
return requestResponseMessage(ep, pendingListeners, {
type: "CONSTRUCT",
path: path.map((p) => p.toString()),
argumentList
}, transferables).then(fromWireValue);
}
});
registerProxy(proxy2, ep);
return proxy2;
}
function myFlat(arr) {
return Array.prototype.concat.apply([], arr);
}
function processArguments(argumentList) {
const processed = argumentList.map(toWireValue);
return [processed.map((v) => v[0]), myFlat(processed.map((v) => v[1]))];
}
var transferCache = /* @__PURE__ */ new WeakMap();
function transfer(obj, transfers) {
transferCache.set(obj, transfers);
return obj;
}
function proxy(obj) {
return Object.assign(obj, { [proxyMarker]: true });
}
function toWireValue(value) {
for (const [name, handler] of transferHandlers) {
if (handler.canHandle(value)) {
const [serializedValue, transferables] = handler.serialize(value);
return [
{
type: "HANDLER",
name,
value: serializedValue
},
transferables
];
}
}
return [
{
type: "RAW",
value
},
transferCache.get(value) || []
];
}
function fromWireValue(value) {
switch (value.type) {
case "HANDLER":
return transferHandlers.get(value.name).deserialize(value.value);
case "RAW":
return value.value;
}
}
function requestResponseMessage(ep, pendingListeners, msg, transfers) {
return new Promise((resolve) => {
const id = generateUUID();
pendingListeners.set(id, resolve);
if (ep.start) {
ep.start();
}
ep.postMessage(Object.assign({ id }, msg), transfers);
});
}
function generateUUID() {
return new Array(4).fill(0).map(() => Math.floor(Math.random() * Number.MAX_SAFE_INTEGER).toString(16)).join("-");
}
export {
expose,
wrap
};
/*! Bundled license information:
comlink/dist/esm/comlink.mjs:
(**
* @license
* Copyright 2019 Google LLC
* SPDX-License-Identifier: Apache-2.0
*)
*/