Bump to v3.0.0.

internal/isIterateeCall.js

@@ -0,0 +1,28 @@
+import isIndex from './isIndex';
+import isLength from './isLength';
+import isObject from '../lang/isObject';
+
+/**
+ * Checks if the provided arguments are from an iteratee call.
+ *
+ * @private
+ * @param {*} value The potential iteratee value argument.
+ * @param {*} index The potential iteratee index or key argument.
+ * @param {*} object The potential iteratee object argument.
+ * @returns {boolean} Returns `true` if the arguments are from an iteratee call, else `false`.
+ */
+function isIterateeCall(value, index, object) {
+  if (!isObject(object)) {
+    return false;
+  }
+  var type = typeof index;
+  if (type == 'number') {
+    var length = object.length,
+        prereq = isLength(length) && isIndex(index, length);
+  } else {
+    prereq = type == 'string' && index in value;
+  }
+  return prereq && object[index] === value;
+}
+
+export default isIterateeCall;