zb-email-verifier
Version:
Promise-based library for verify an email address existence via SMTP
131 lines (130 loc) • 6.35 kB
JavaScript
"use strict";
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
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 __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.SmtpClient = void 0;
var net_1 = __importDefault(require("net"));
var lodash_1 = __importDefault(require("lodash"));
var debug_1 = __importDefault(require("debug"));
var chalk_1 = __importDefault(require("chalk"));
var wait_queue_1 = __importDefault(require("wait-queue"));
var SmtpClient = /** @class */ (function () {
function SmtpClient(options) {
this.options = options;
this.queue = new wait_queue_1.default();
this.debug = debug_1.default.debug("smtp");
}
SmtpClient.prototype.connect = function () {
var _this = this;
var _a;
this.debug(chalk_1.default.bold.cyanBright("||") + " connect");
var _options = __assign(__assign({}, this.options), { port: (_a = this.options.port) !== null && _a !== void 0 ? _a : 25 });
this.client = net_1.default.createConnection(_options);
this.client.on("data", (function (data) {
_this.queue.push(data.toString());
}));
this.client.on("end", function () {
_this.debug("END");
});
this.client.on("error", function (err) {
_this.debug("ERROR");
if (_this.debug.enabled)
console.error(err);
});
return this.read();
};
SmtpClient.prototype.close = function () {
var _this = this;
if (!this.client)
return;
var _client = this.client;
this.client.end(function () { _client.destroy(); _this.debug(chalk_1.default.bold.cyanBright("||") + " closed"); });
this.client = undefined;
};
SmtpClient.prototype.helo = function (value) {
return this.write("HELO " + value);
};
SmtpClient.prototype.from = function (value) {
return this.write("MAIL FROM: <" + value + ">");
};
SmtpClient.prototype.to = function (value) {
return this.write("RCPT TO: <" + value + ">");
};
SmtpClient.prototype.write = function (msg) {
if (!this.client)
throw new Error("client is null");
this.debug(chalk_1.default.bold.blueBright(">>") + " " + chalk_1.default.white(msg));
this.client.write(msg + "\r\n");
return this.read();
};
SmtpClient.prototype.read = function () {
return __awaiter(this, void 0, void 0, function () {
var line, indented, code, message;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.queue.shift()];
case 1:
line = _a.sent();
if (this.debug.enabled) {
indented = line.split("\r\n").filter(function (value) { return !lodash_1.default.isEmpty(value); }).join("\r\n ");
this.debug(chalk_1.default.bold.redBright("<<") + " " + chalk_1.default.white(indented));
}
code = parseInt(line.substr(0, 3));
message = line.substr(4) // good enough for now
;
return [2 /*return*/, { code: code, message: message }];
}
});
});
};
return SmtpClient;
}());
exports.SmtpClient = SmtpClient;