init

tool/threadHelper.js

@@ -0,0 +1,31 @@
+const { Worker } = require('worker_threads');
+
+ const  runInThread = (fn, ...args) => {
+  return new Promise((resolve, reject) => {
+    const worker = new Worker(`
+      const { parentPort } = require('worker_threads');
+      parentPort.on('message', ({fnStr, args}) => {
+        const fn = eval('(' + fnStr + ')');
+        Promise.resolve(fn(...args))
+          .then(result => parentPort.postMessage({result}))
+          .catch(err => parentPort.postMessage({error: err.toString()}));
+      });
+    `, { eval: true });
+
+    worker.on('message', (msg) => {
+      if (msg.error) reject(new Error(msg.error));
+      else resolve(msg.result);
+      worker.terminate();
+    });
+
+    worker.on('error', reject);
+    worker.postMessage({ fnStr: fn.toString(), args });
+  });
+}
+
+
+module.exports = {
+    runInThread
+} ;
+
+