初始化

engine/gulp/util/polyfill-node-promisify.js

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+
+//  Replace node promisify for testing editor-extends.
+//
+//  Replace:
+//      require('util')
+//  As:
+//      { promisify }
+
+const es = require('event-stream');
+const stream = require('stream');
+
+const promisify = (function (handle) {
+    return function (...args) {
+        return new Promise(function (resolve, reject) {
+            handle(...args, (err, res) => {
+                if (err) {
+                    reject(err);
+                }
+                else {
+                    resolve(res);
+                }
+            });
+        });
+    };
+}).toString();
+
+const REPLACE = /require\(['"]util['"]\)/g;
+const AS = `{promisify:${promisify}}`;
+
+module.exports = function (filename) {
+    if (filename.endsWith('.js') || filename.endsWith('.ts')) {
+        return es.map(function (data, callback) {
+            var content = data.toString();
+            if (REPLACE.test(content)) { // fast test
+                content = content.replace(REPLACE, AS);
+                data = new Buffer(content);
+            }
+            callback(null, data);
+        });
+    }
+    else {
+        return stream.PassThrough();
+    }
+};