onemon
Version:
Run a npm script as a deamon, once
74 lines • 2.95 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.IPCClient = void 0;
const net_1 = __importDefault(require("net"));
const events_1 = require("events");
const ipc_transcoder_1 = require("./ipc-transcoder");
const xpipe = require('xpipe');
class IPCClient extends events_1.EventEmitter {
constructor(options) {
super();
this.closing = false;
this.socketPath = xpipe.eq(options.socketPath);
this.encoder = ipc_transcoder_1.createEncoder();
}
connect() {
return new Promise((resolve, reject) => {
if (this.socket) {
resolve();
return;
}
const socket = net_1.default.createConnection({ path: this.socketPath });
socket.setEncoding(ipc_transcoder_1.socketEncoding);
ipc_transcoder_1.attachDataListener({
emitter: this,
socket,
createDecoder: ipc_transcoder_1.createDecoder,
});
socket.once('connect', () => {
this.socket = socket;
socket.on('error', (err) => this.emit('error', err));
resolve();
});
socket.once('error', (err) => reject(err));
socket.on('close', () => {
if (!this.closing)
this.emit('disconnect');
this.closing = false;
delete this.socket;
});
});
}
close() {
return new Promise((resolve) => __awaiter(this, void 0, void 0, function* () {
if (!this.socket) {
resolve();
return;
}
this.closing = true;
this.socket.once('close', () => resolve());
this.socket.end();
}));
}
send(topic, message) {
if (!this.socket) {
throw new Error('Cannot send message, no active connection');
}
const data = this.encoder({ topic, message });
this.socket.write(data);
}
}
exports.IPCClient = IPCClient;
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