update

node_modules/asap/asap.js

@@ -0,0 +1,65 @@
+"use strict";
+
+var rawAsap = require("./raw");
+var freeTasks = [];
+
+/**
+ * Calls a task as soon as possible after returning, in its own event, with
+ * priority over IO events. An exception thrown in a task can be handled by
+ * `process.on("uncaughtException") or `domain.on("error")`, but will otherwise
+ * crash the process. If the error is handled, all subsequent tasks will
+ * resume.
+ *
+ * @param {{call}} task A callable object, typically a function that takes no
+ * arguments.
+ */
+module.exports = asap;
+function asap(task) {
+    var rawTask;
+    if (freeTasks.length) {
+        rawTask = freeTasks.pop();
+    } else {
+        rawTask = new RawTask();
+    }
+    rawTask.task = task;
+    rawTask.domain = process.domain;
+    rawAsap(rawTask);
+}
+
+function RawTask() {
+    this.task = null;
+    this.domain = null;
+}
+
+RawTask.prototype.call = function () {
+    if (this.domain) {
+        this.domain.enter();
+    }
+    var threw = true;
+    try {
+        this.task.call();
+        threw = false;
+        // If the task throws an exception (presumably) Node.js restores the
+        // domain stack for the next event.
+        if (this.domain) {
+            this.domain.exit();
+        }
+    } finally {
+        // We use try/finally and a threw flag to avoid messing up stack traces
+        // when we catch and release errors.
+        if (threw) {
+            // In Node.js, uncaught exceptions are considered fatal errors.
+            // Re-throw them to interrupt flushing!
+            // Ensure that flushing continues if an uncaught exception is
+            // suppressed listening process.on("uncaughtException") or
+            // domain.on("error").
+            rawAsap.requestFlush();
+        }
+        // If the task threw an error, we do not want to exit the domain here.
+        // Exiting the domain would prevent the domain from catching the error.
+        this.task = null;
+        this.domain = null;
+        freeTasks.push(this);
+    }
+};
+