Move JavaScript to root lib/ folder

lib/common/api/callbacks-registry.js

@@ -0,0 +1,66 @@
+'use strict';
+
+var slice = [].slice;
+
+const v8Util = process.atomBinding('v8_util');
+
+class CallbacksRegistry {
+  constructor() {
+    this.nextId = 0;
+    this.callbacks = {};
+  }
+
+  add(callback) {
+    // The callback is already added.
+    var filenameAndLine, id, location, match, ref, regexp, stackString;
+    id = v8Util.getHiddenValue(callback, 'callbackId');
+    if (id != null) {
+      return id;
+    }
+    id = ++this.nextId;
+
+    // Capture the location of the function and put it in the ID string,
+    // so that release errors can be tracked down easily.
+    regexp = /at (.*)/gi;
+    stackString = (new Error).stack;
+    while ((match = regexp.exec(stackString)) !== null) {
+      location = match[1];
+      if (location.indexOf('(native)') !== -1) {
+        continue;
+      }
+      if (location.indexOf('atom.asar') !== -1) {
+        continue;
+      }
+      ref = /([^\/^\)]*)\)?$/gi.exec(location);
+      filenameAndLine = ref[1];
+      break;
+    }
+    this.callbacks[id] = callback;
+    v8Util.setHiddenValue(callback, 'callbackId', id);
+    v8Util.setHiddenValue(callback, 'location', filenameAndLine);
+    return id;
+  }
+
+  get(id) {
+    var ref;
+    return (ref = this.callbacks[id]) != null ? ref : function() {};
+  }
+
+  call() {
+    var args, id, ref;
+    id = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
+    return (ref = this.get(id)).call.apply(ref, [global].concat(slice.call(args)));
+  }
+
+  apply() {
+    var args, id, ref;
+    id = arguments[0], args = 2 <= arguments.length ? slice.call(arguments, 1) : [];
+    return (ref = this.get(id)).apply.apply(ref, [global].concat(slice.call(args)));
+  }
+
+  remove(id) {
+    return delete this.callbacks[id];
+  }
+}
+
+module.exports = CallbacksRegistry;