@factorialco/shadowdog
Version:
<img src="https://raw.githubusercontent.com/factorialco/shadowdog/refs/heads/main/logo.png" alt="drawing" width="100"/>
92 lines (91 loc) • 3.26 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const fs = __importStar(require("fs-extra"));
const chalk_1 = __importDefault(require("chalk"));
const utils_1 = require("../utils");
const path_1 = __importDefault(require("path"));
const lockExists = (lockFile) => {
return fs.existsSync(lockFile);
};
const isLockOwner = (lockFile) => {
return fs.readFileSync(lockFile, 'utf-8') === process.pid.toString();
};
const middleware = async ({ eventEmitter, next, options, }) => {
const lockFile = options.path;
if (lockExists(lockFile) && !isLockOwner(lockFile)) {
(0, utils_1.logMessage)(`🔒 Lock file ${chalk_1.default.blue(lockFile)} exists. Aborting...`);
return (0, utils_1.exit)(eventEmitter, 1);
}
return next();
};
let counter = 0;
const handleCounterDecrement = (lockFile) => {
if (!lockExists(lockFile)) {
return;
}
if (isLockOwner(lockFile)) {
counter -= 1;
if (counter === 0) {
fs.unlinkSync(lockFile);
}
}
};
const listener = (eventEmitter, options) => {
const lockFile = options.path;
eventEmitter.on('begin', () => {
if (!lockExists(lockFile)) {
fs.mkdirpSync(path_1.default.dirname(lockFile));
fs.writeFileSync(lockFile, process.pid.toString());
}
if (isLockOwner(lockFile)) {
counter += 1;
}
});
eventEmitter.on('end', () => handleCounterDecrement(lockFile));
eventEmitter.on('error', () => handleCounterDecrement(lockFile));
eventEmitter.on('exit', () => {
if (lockExists(lockFile) && isLockOwner(lockFile)) {
fs.unlinkSync(lockFile);
}
});
};
exports.default = {
middleware,
listener,
};