v5

node_modules/rsvp/lib/rsvp/asap.js

@@ -0,0 +1,106 @@
+let len = 0;
+let vertxNext;
+export default function asap(callback, arg) {
+  queue[len] = callback;
+  queue[len + 1] = arg;
+  len += 2;
+  if (len === 2) {
+    // If len is 1, that means that we need to schedule an async flush.
+    // If additional callbacks are queued before the queue is flushed, they
+    // will be processed by this flush that we are scheduling.
+    scheduleFlush();
+  }
+}
+
+const browserWindow = (typeof window !== 'undefined') ? window : undefined;
+const browserGlobal = browserWindow || {};
+const BrowserMutationObserver = browserGlobal.MutationObserver || browserGlobal.WebKitMutationObserver;
+const isNode = typeof self === 'undefined' &&
+  typeof process !== 'undefined' && {}.toString.call(process) === '[object process]';
+
+// test for web worker but not in IE10
+const isWorker = typeof Uint8ClampedArray !== 'undefined' &&
+  typeof importScripts !== 'undefined' &&
+  typeof MessageChannel !== 'undefined';
+
+// node
+function useNextTick() {
+  let nextTick = process.nextTick;
+  // node version 0.10.x displays a deprecation warning when nextTick is used recursively
+  // setImmediate should be used instead instead
+  let version = process.versions.node.match(/^(?:(\d+)\.)?(?:(\d+)\.)?(\*|\d+)$/);
+  if (Array.isArray(version) && version[1] === '0' && version[2] === '10') {
+    nextTick = setImmediate;
+  }
+  return () => nextTick(flush);
+}
+
+// vertx
+function useVertxTimer() {
+  if (typeof vertxNext !== 'undefined') {
+    return function() {
+      vertxNext(flush);
+    };
+  }
+  return useSetTimeout();
+}
+
+function useMutationObserver() {
+  let iterations = 0;
+  let observer = new BrowserMutationObserver(flush);
+  let node = document.createTextNode('');
+  observer.observe(node, { characterData: true });
+
+  return () => node.data = (iterations = ++iterations % 2);
+}
+
+// web worker
+function useMessageChannel() {
+  let channel = new MessageChannel();
+  channel.port1.onmessage = flush;
+  return () => channel.port2.postMessage(0);
+}
+
+function useSetTimeout() {
+  return () => setTimeout(flush, 1);
+}
+
+const queue = new Array(1000);
+
+function flush() {
+  for (let i = 0; i < len; i+=2) {
+    let callback = queue[i];
+    let arg = queue[i+1];
+
+    callback(arg);
+
+    queue[i] = undefined;
+    queue[i+1] = undefined;
+  }
+
+  len = 0;
+}
+
+function attemptVertex() {
+  try {
+    const vertx = Function('return this')().require('vertx');
+    vertxNext = vertx.runOnLoop || vertx.runOnContext;
+    return useVertxTimer();
+  } catch(e) {
+    return useSetTimeout();
+  }
+}
+
+let scheduleFlush;
+// Decide what async method to use to triggering processing of queued callbacks:
+if (isNode) {
+  scheduleFlush = useNextTick();
+} else if (BrowserMutationObserver) {
+  scheduleFlush = useMutationObserver();
+} else if (isWorker) {
+  scheduleFlush = useMessageChannel();
+} else if (browserWindow === undefined && typeof require === 'function') {
+  scheduleFlush = attemptVertex();
+} else {
+  scheduleFlush = useSetTimeout();
+}