react app

react-app/node_modules/lodash/internal/bindCallback.js

@@ -0,0 +1,39 @@
+var identity = require('../utility/identity');
+
+/**
+ * A specialized version of `baseCallback` which only supports `this` binding
+ * and specifying the number of arguments to provide to `func`.
+ *
+ * @private
+ * @param {Function} func The function to bind.
+ * @param {*} thisArg The `this` binding of `func`.
+ * @param {number} [argCount] The number of arguments to provide to `func`.
+ * @returns {Function} Returns the callback.
+ */
+function bindCallback(func, thisArg, argCount) {
+  if (typeof func != 'function') {
+    return identity;
+  }
+  if (thisArg === undefined) {
+    return func;
+  }
+  switch (argCount) {
+    case 1: return function(value) {
+      return func.call(thisArg, value);
+    };
+    case 3: return function(value, index, collection) {
+      return func.call(thisArg, value, index, collection);
+    };
+    case 4: return function(accumulator, value, index, collection) {
+      return func.call(thisArg, accumulator, value, index, collection);
+    };
+    case 5: return function(value, other, key, object, source) {
+      return func.call(thisArg, value, other, key, object, source);
+    };
+  }
+  return function() {
+    return func.apply(thisArg, arguments);
+  };
+}
+
+module.exports = bindCallback;