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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
import process from "node:process";
import { EventEmitter } from "node:events";
import { primordials } from "ext:core/mod.js";
import {
op_get_extras_binding_object,
op_inspector_close,
op_inspector_connect,
op_inspector_disconnect,
op_inspector_dispatch,
op_inspector_emit_protocol_event,
op_inspector_enabled,
op_inspector_open,
op_inspector_url,
op_inspector_wait,
} from "ext:core/ops";
import {
isUint32,
validateFunction,
validateInt32,
validateObject,
validateString,
} from "ext:deno_node/internal/validators.mjs";
import {
ERR_INSPECTOR_ALREADY_ACTIVATED,
ERR_INSPECTOR_ALREADY_CONNECTED,
ERR_INSPECTOR_CLOSED,
ERR_INSPECTOR_COMMAND,
ERR_INSPECTOR_NOT_ACTIVE,
ERR_INSPECTOR_NOT_CONNECTED,
ERR_INSPECTOR_NOT_WORKER,
} from "ext:deno_node/internal/errors.ts";
const {
SymbolDispose,
JSONParse,
JSONStringify,
SafeMap,
} = primordials;
class Session extends EventEmitter {
#connection = null;
#nextId = 1;
#messageCallbacks = new SafeMap();
connect() {
if (this.#connection) {
throw new ERR_INSPECTOR_ALREADY_CONNECTED("The inspector session");
}
this.#connection = op_inspector_connect(false, (m) => this.#onMessage(m));
}
connectToMainThread() {
if (isMainThread) {
throw new ERR_INSPECTOR_NOT_WORKER();
}
if (this.#connection) {
throw new ERR_INSPECTOR_ALREADY_CONNECTED("The inspector session");
}
this.#connection = op_inspector_connect(true, (m) => this.#onMessage(m));
}
#onMessage(message) {
const parsed = JSONParse(message);
try {
if (parsed.id) {
const callback = this.#messageCallbacks.get(parsed.id);
this.#messageCallbacks.delete(parsed.id);
if (callback) {
if (parsed.error) {
return callback(
new ERR_INSPECTOR_COMMAND(
parsed.error.code,
parsed.error.message,
),
);
}
callback(null, parsed.result);
}
} else {
this.emit(parsed.method, parsed);
this.emit("inspectorNotification", parsed);
}
} catch (error) {
process.emitWarning(error);
}
}
post(method, params, callback) {
validateString(method, "method");
if (!callback && typeof params === "function") {
callback = params;
params = null;
}
if (params) {
validateObject(params, "params");
}
if (callback) {
validateFunction(callback, "callback");
}
if (!this.#connection) {
throw new ERR_INSPECTOR_NOT_CONNECTED();
}
const id = this.#nextId++;
const message = { id, method };
if (params) {
message.params = params;
}
if (callback) {
this.#messageCallbacks.set(id, callback);
}
op_inspector_dispatch(this.#connection, JSONStringify(message));
}
disconnect() {
if (!this.#connection) {
return;
}
op_inspector_disconnect(this.#connection);
this.#connection = null;
// deno-lint-ignore prefer-primordials
for (const callback of this.#messageCallbacks.values()) {
process.nextTick(callback, new ERR_INSPECTOR_CLOSED());
}
this.#messageCallbacks.clear();
this.#nextId = 1;
}
}
function open(port, host, wait) {
if (op_inspector_enabled()) {
throw new ERR_INSPECTOR_ALREADY_ACTIVATED();
}
// inspectorOpen() currently does not typecheck its arguments and adding
// such checks would be a potentially breaking change. However, the native
// open() function requires the port to fit into a 16-bit unsigned integer,
// causing an integer overflow otherwise, so we at least need to prevent that.
if (isUint32(port)) {
validateInt32(port, "port", 0, 65535);
} else {
// equiv of handling args[0]->IsUint32()
port = undefined;
}
if (typeof host !== "string") {
// equiv of handling args[1]->IsString()
host = undefined;
}
op_inspector_open(port, host);
if (wait) {
op_inspector_wait();
}
return {
__proto__: null,
[SymbolDispose]() {
_debugEnd();
},
};
}
function close() {
op_inspector_close();
}
function url() {
return op_inspector_url();
}
function waitForDebugger() {
if (!op_inspector_wait()) {
throw new ERR_INSPECTOR_NOT_ACTIVE();
}
}
function broadcastToFrontend(eventName, params) {
validateString(eventName, "eventName");
if (params) {
validateObject(params, "params");
}
op_inspector_emit_protocol_event(eventName, JSONStringify(params ?? {}));
}
const Network = {
requestWillBeSent: (params) =>
broadcastToFrontend("Network.requestWillBeSent", params),
responseReceived: (params) =>
broadcastToFrontend("Network.responseReceived", params),
loadingFinished: (params) =>
broadcastToFrontend("Network.loadingFinished", params),
loadingFailed: (params) =>
broadcastToFrontend("Network.loadingFailed", params),
};
const console = op_get_extras_binding_object().console;
export { close, console, Network, open, Session, url, waitForDebugger };
export default {
open,
close,
url,
waitForDebugger,
console,
Session,
Network,
};
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