初始化fy

uni_modules/UniDevTools/node_modules/licia/optimizeCb.js

@@ -0,0 +1,23 @@
+var isUndef = require('./isUndef');
+exports = function(fn, ctx, argCount) {
+    if (isUndef(ctx)) return fn;
+    switch (argCount == null ? 3 : argCount) {
+        case 1:
+            return function(val) {
+                return fn.call(ctx, val);
+            };
+        case 3:
+            return function(val, idx, collection) {
+                return fn.call(ctx, val, idx, collection);
+            };
+        case 4:
+            return function(accumulator, val, idx, collection) {
+                return fn.call(ctx, accumulator, val, idx, collection);
+            };
+    }
+    return function() {
+        return fn.apply(ctx, arguments);
+    };
+};
+
+module.exports = exports;