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//#region src/messages.ts
const TYPE_REQUEST = "q";
const TYPE_RESPONSE = "s";
//#endregion
//#region src/utils.ts
function createPromiseWithResolvers() {
let resolve;
let reject;
return {
promise: new Promise((res, rej) => {
resolve = res;
reject = rej;
}),
resolve,
reject
};
}
const random = Math.random.bind(Math);
const urlAlphabet = "useandom-26T198340PX75pxJACKVERYMINDBUSHWOLF_GQZbfghjklqvwyzrict";
function nanoid(size = 21) {
let id = "";
let i = size;
while (i--) id += urlAlphabet[random() * 64 | 0];
return id;
}
//#endregion
//#region src/main.ts
const DEFAULT_TIMEOUT = 6e4;
const defaultSerialize = (i) => i;
const defaultDeserialize = defaultSerialize;
const { clearTimeout, setTimeout } = globalThis;
function createBirpc($functions, options) {
const { post, on, off = () => {}, eventNames = [], serialize = defaultSerialize, deserialize = defaultDeserialize, resolver, bind = "rpc", timeout = DEFAULT_TIMEOUT, proxify = true } = options;
let $closed = false;
const _rpcPromiseMap = /* @__PURE__ */ new Map();
let _promiseInit;
let rpc;
async function _call(method, args, event, optional) {
if ($closed) throw new Error(`[birpc] rpc is closed, cannot call "${method}"`);
const req = {
m: method,
a: args,
t: TYPE_REQUEST
};
if (optional) req.o = true;
const send = async (_req) => post(serialize(_req));
if (event) {
await send(req);
return;
}
if (_promiseInit) try {
await _promiseInit;
} finally {
_promiseInit = void 0;
}
let { promise, resolve, reject } = createPromiseWithResolvers();
const id = nanoid();
req.i = id;
let timeoutId;
async function handler(newReq = req) {
if (timeout >= 0) {
timeoutId = setTimeout(() => {
try {
if (options.onTimeoutError?.call(rpc, method, args) !== true) throw new Error(`[birpc] timeout on calling "${method}"`);
} catch (e) {
reject(e);
}
_rpcPromiseMap.delete(id);
}, timeout);
if (typeof timeoutId === "object") timeoutId = timeoutId.unref?.();
}
_rpcPromiseMap.set(id, {
resolve,
reject,
timeoutId,
method
});
await send(newReq);
return promise;
}
try {
if (options.onRequest) await options.onRequest.call(rpc, req, handler, resolve);
else await handler();
} catch (e) {
if (options.onGeneralError?.call(rpc, e) !== true) throw e;
return;
} finally {
clearTimeout(timeoutId);
_rpcPromiseMap.delete(id);
}
return promise;
}
const builtinMethods = {
$call: (method, ...args) => _call(method, args, false),
$callOptional: (method, ...args) => _call(method, args, false, true),
$callEvent: (method, ...args) => _call(method, args, true),
$callRaw: (options$1) => _call(options$1.method, options$1.args, options$1.event, options$1.optional),
$rejectPendingCalls,
get $closed() {
return $closed;
},
get $meta() {
return options.meta;
},
$close,
$functions
};
if (proxify) rpc = new Proxy({}, { get(_, method) {
if (Object.prototype.hasOwnProperty.call(builtinMethods, method)) return builtinMethods[method];
if (method === "then" && !eventNames.includes("then") && !("then" in $functions)) return void 0;
const sendEvent = (...args) => _call(method, args, true);
if (eventNames.includes(method)) {
sendEvent.asEvent = sendEvent;
return sendEvent;
}
const sendCall = (...args) => _call(method, args, false);
sendCall.asEvent = sendEvent;
return sendCall;
} });
else rpc = builtinMethods;
function $close(customError) {
$closed = true;
_rpcPromiseMap.forEach(({ reject, method }) => {
const error = /* @__PURE__ */ new Error(`[birpc] rpc is closed, cannot call "${method}"`);
if (customError) {
customError.cause ??= error;
return reject(customError);
}
reject(error);
});
_rpcPromiseMap.clear();
off(onMessage);
}
function $rejectPendingCalls(handler) {
const handlerResults = Array.from(_rpcPromiseMap.values()).map(({ method, reject }) => {
if (!handler) return reject(/* @__PURE__ */ new Error(`[birpc]: rejected pending call "${method}".`));
return handler({
method,
reject
});
});
_rpcPromiseMap.clear();
return handlerResults;
}
async function onMessage(data, ...extra) {
let msg;
try {
msg = deserialize(data);
} catch (e) {
if (options.onGeneralError?.call(rpc, e) !== true) throw e;
return;
}
if (msg.t === TYPE_REQUEST) {
const { m: method, a: args, o: optional } = msg;
let result, error;
let fn = await (resolver ? resolver.call(rpc, method, $functions[method]) : $functions[method]);
if (optional) fn ||= () => void 0;
if (!fn) error = /* @__PURE__ */ new Error(`[birpc] function "${method}" not found`);
else try {
result = await fn.apply(bind === "rpc" ? rpc : $functions, args);
} catch (e) {
error = e;
}
if (msg.i) {
if (error && options.onFunctionError) {
if (options.onFunctionError.call(rpc, error, method, args) === true) return;
}
if (!error) try {
await post(serialize({
t: TYPE_RESPONSE,
i: msg.i,
r: result
}), ...extra);
return;
} catch (e) {
error = e;
if (options.onGeneralError?.call(rpc, e, method, args) !== true) throw e;
}
try {
await post(serialize({
t: TYPE_RESPONSE,
i: msg.i,
e: error
}), ...extra);
} catch (e) {
if (options.onGeneralError?.call(rpc, e, method, args) !== true) throw e;
}
}
} else {
const { i: ack, r: result, e: error } = msg;
const promise = _rpcPromiseMap.get(ack);
if (promise) {
clearTimeout(promise.timeoutId);
if (error) promise.reject(error);
else promise.resolve(result);
}
_rpcPromiseMap.delete(ack);
}
}
_promiseInit = on(onMessage);
return rpc;
}
export { createBirpc as c };
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