diff --git a/README.md b/README.md
index 8af04b4fe..38088be4a 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# lodash-es v4.5.0
+# lodash-es v4.5.1
 
 The [lodash](https://lodash.com/) library exported as [ES](http://www.ecma-international.org/ecma-262/6.0/) modules.
 
@@ -7,4 +7,4 @@ Generated using [lodash-cli](https://www.npmjs.com/package/lodash-cli):
 $ lodash modularize exports=es -o ./
 ```
 
-See the [package source](https://github.com/lodash/lodash/tree/4.5.0-es) for more details.
+See the [package source](https://github.com/lodash/lodash/tree/4.5.1-es) for more details.
diff --git a/_assignValue.js b/_assignValue.js
index 59257f10b..b6c54e896 100644
--- a/_assignValue.js
+++ b/_assignValue.js
@@ -18,8 +18,7 @@ var hasOwnProperty = objectProto.hasOwnProperty;
  */
 function assignValue(object, key, value) {
   var objValue = object[key];
-  if ((!eq(objValue, value) ||
-        (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) ||
+  if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
       (value === undefined && !(key in object))) {
     object[key] = value;
   }
diff --git a/_composeArgs.js b/_composeArgs.js
index 854f489aa..21f7e43de 100644
--- a/_composeArgs.js
+++ b/_composeArgs.js
@@ -9,23 +9,28 @@ var nativeMax = Math.max;
  * @param {Array|Object} args The provided arguments.
  * @param {Array} partials The arguments to prepend to those provided.
  * @param {Array} holders The `partials` placeholder indexes.
+ * @params {boolean} [isCurried] Specify composing for a curried function.
  * @returns {Array} Returns the new array of composed arguments.
  */
-function composeArgs(args, partials, holders) {
-  var holdersLength = holders.length,
-      argsIndex = -1,
-      argsLength = nativeMax(args.length - holdersLength, 0),
+function composeArgs(args, partials, holders, isCurried) {
+  var argsIndex = -1,
+      argsLength = args.length,
+      holdersLength = holders.length,
       leftIndex = -1,
       leftLength = partials.length,
-      result = Array(leftLength + argsLength);
+      rangeLength = nativeMax(argsLength - holdersLength, 0),
+      result = Array(leftLength + rangeLength),
+      isUncurried = !isCurried;
 
   while (++leftIndex < leftLength) {
     result[leftIndex] = partials[leftIndex];
   }
   while (++argsIndex < holdersLength) {
-    result[holders[argsIndex]] = args[argsIndex];
+    if (isUncurried || argsIndex < argsLength) {
+      result[holders[argsIndex]] = args[argsIndex];
+    }
   }
-  while (argsLength--) {
+  while (rangeLength--) {
     result[leftIndex++] = args[argsIndex++];
   }
   return result;
diff --git a/_composeArgsRight.js b/_composeArgsRight.js
index 48b059c8c..65db64190 100644
--- a/_composeArgsRight.js
+++ b/_composeArgsRight.js
@@ -9,18 +9,21 @@ var nativeMax = Math.max;
  * @param {Array|Object} args The provided arguments.
  * @param {Array} partials The arguments to append to those provided.
  * @param {Array} holders The `partials` placeholder indexes.
+ * @params {boolean} [isCurried] Specify composing for a curried function.
  * @returns {Array} Returns the new array of composed arguments.
  */
-function composeArgsRight(args, partials, holders) {
-  var holdersIndex = -1,
+function composeArgsRight(args, partials, holders, isCurried) {
+  var argsIndex = -1,
+      argsLength = args.length,
+      holdersIndex = -1,
       holdersLength = holders.length,
-      argsIndex = -1,
-      argsLength = nativeMax(args.length - holdersLength, 0),
       rightIndex = -1,
       rightLength = partials.length,
-      result = Array(argsLength + rightLength);
+      rangeLength = nativeMax(argsLength - holdersLength, 0),
+      result = Array(rangeLength + rightLength),
+      isUncurried = !isCurried;
 
-  while (++argsIndex < argsLength) {
+  while (++argsIndex < rangeLength) {
     result[argsIndex] = args[argsIndex];
   }
   var offset = argsIndex;
@@ -28,7 +31,9 @@ function composeArgsRight(args, partials, holders) {
     result[offset + rightIndex] = partials[rightIndex];
   }
   while (++holdersIndex < holdersLength) {
-    result[offset + holders[holdersIndex]] = args[argsIndex++];
+    if (isUncurried || argsIndex < argsLength) {
+      result[offset + holders[holdersIndex]] = args[argsIndex++];
+    }
   }
   return result;
 }
diff --git a/_countHolders.js b/_countHolders.js
new file mode 100644
index 000000000..c4b76fb7b
--- /dev/null
+++ b/_countHolders.js
@@ -0,0 +1,21 @@
+/**
+ * Gets the number of `placeholder` occurrences in `array`.
+ *
+ * @private
+ * @param {Array} array The array to inspect.
+ * @param {*} placeholder The placeholder to search for.
+ * @returns {number} Returns the placeholder count.
+ */
+function countHolders(array, placeholder) {
+  var length = array.length,
+      result = 0;
+
+  while (length--) {
+    if (array[length] === placeholder) {
+      result++;
+    }
+  }
+  return result;
+}
+
+export default countHolders;
diff --git a/_createCurryWrapper.js b/_createCurryWrapper.js
index 4b396c6b7..8d727c88a 100644
--- a/_createCurryWrapper.js
+++ b/_createCurryWrapper.js
@@ -2,6 +2,7 @@ import apply from './_apply';
 import createCtorWrapper from './_createCtorWrapper';
 import createHybridWrapper from './_createHybridWrapper';
 import createRecurryWrapper from './_createRecurryWrapper';
+import getPlaceholder from './_getPlaceholder';
 import replaceHolders from './_replaceHolders';
 import root from './_root';
 
@@ -19,10 +20,9 @@ function createCurryWrapper(func, bitmask, arity) {
 
   function wrapper() {
     var length = arguments.length,
-        index = length,
         args = Array(length),
-        fn = (this && this !== root && this instanceof wrapper) ? Ctor : func,
-        placeholder = wrapper.placeholder;
+        index = length,
+        placeholder = getPlaceholder(wrapper);
 
     while (index--) {
       args[index] = arguments[index];
@@ -32,9 +32,13 @@ function createCurryWrapper(func, bitmask, arity) {
       : replaceHolders(args, placeholder);
 
     length -= holders.length;
-    return length < arity
-      ? createRecurryWrapper(func, bitmask, createHybridWrapper, placeholder, undefined, args, holders, undefined, undefined, arity - length)
-      : apply(fn, this, args);
+    if (length < arity) {
+      return createRecurryWrapper(
+        func, bitmask, createHybridWrapper, wrapper.placeholder, undefined,
+        args, holders, undefined, undefined, arity - length);
+    }
+    var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
+    return apply(fn, this, args);
   }
   return wrapper;
 }
diff --git a/_createHybridWrapper.js b/_createHybridWrapper.js
index c88c8e6c4..8fdab8b72 100644
--- a/_createHybridWrapper.js
+++ b/_createHybridWrapper.js
@@ -1,7 +1,9 @@
 import composeArgs from './_composeArgs';
 import composeArgsRight from './_composeArgsRight';
+import countHolders from './_countHolders';
 import createCtorWrapper from './_createCtorWrapper';
 import createRecurryWrapper from './_createRecurryWrapper';
+import getPlaceholder from './_getPlaceholder';
 import reorder from './_reorder';
 import replaceHolders from './_replaceHolders';
 import root from './_root';
@@ -35,8 +37,7 @@ function createHybridWrapper(func, bitmask, thisArg, partials, holders, partials
   var isAry = bitmask & ARY_FLAG,
       isBind = bitmask & BIND_FLAG,
       isBindKey = bitmask & BIND_KEY_FLAG,
-      isCurry = bitmask & CURRY_FLAG,
-      isCurryRight = bitmask & CURRY_RIGHT_FLAG,
+      isCurried = bitmask & (CURRY_FLAG | CURRY_RIGHT_FLAG),
       isFlip = bitmask & FLIP_FLAG,
       Ctor = isBindKey ? undefined : createCtorWrapper(func);
 
@@ -48,33 +49,34 @@ function createHybridWrapper(func, bitmask, thisArg, partials, holders, partials
     while (index--) {
       args[index] = arguments[index];
     }
+    if (isCurried) {
+      var placeholder = getPlaceholder(wrapper),
+          holdersCount = countHolders(args, placeholder);
+    }
     if (partials) {
-      args = composeArgs(args, partials, holders);
+      args = composeArgs(args, partials, holders, isCurried);
     }
     if (partialsRight) {
-      args = composeArgsRight(args, partialsRight, holdersRight);
+      args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
     }
-    if (isCurry || isCurryRight) {
-      var placeholder = wrapper.placeholder,
-          argsHolders = replaceHolders(args, placeholder);
-
-      length -= argsHolders.length;
-      if (length < arity) {
-        return createRecurryWrapper(
-          func, bitmask, createHybridWrapper, placeholder, thisArg, args,
-          argsHolders, argPos, ary, arity - length
-        );
-      }
+    length -= holdersCount;
+    if (isCurried && length < arity) {
+      var newHolders = replaceHolders(args, placeholder);
+      return createRecurryWrapper(
+        func, bitmask, createHybridWrapper, wrapper.placeholder, thisArg,
+        args, newHolders, argPos, ary, arity - length
+      );
     }
     var thisBinding = isBind ? thisArg : this,
         fn = isBindKey ? thisBinding[func] : func;
 
+    length = args.length;
     if (argPos) {
       args = reorder(args, argPos);
-    } else if (isFlip && args.length > 1) {
+    } else if (isFlip && length > 1) {
       args.reverse();
     }
-    if (isAry && ary < args.length) {
+    if (isAry && ary < length) {
       args.length = ary;
     }
     if (this && this !== root && this instanceof wrapper) {
diff --git a/_createRecurryWrapper.js b/_createRecurryWrapper.js
index 73e3b078d..a2add3dbb 100644
--- a/_createRecurryWrapper.js
+++ b/_createRecurryWrapper.js
@@ -17,7 +17,7 @@ var BIND_FLAG = 1,
  * @param {Function} func The function to wrap.
  * @param {number} bitmask The bitmask of wrapper flags. See `createWrapper` for more details.
  * @param {Function} wrapFunc The function to create the `func` wrapper.
- * @param {*} placeholder The placeholder to replace.
+ * @param {*} placeholder The placeholder value.
  * @param {*} [thisArg] The `this` binding of `func`.
  * @param {Array} [partials] The arguments to prepend to those provided to the new function.
  * @param {Array} [holders] The `partials` placeholder indexes.
@@ -29,7 +29,7 @@ var BIND_FLAG = 1,
 function createRecurryWrapper(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
   var isCurry = bitmask & CURRY_FLAG,
       newArgPos = argPos ? copyArray(argPos) : undefined,
-      newsHolders = isCurry ? holders : undefined,
+      newHolders = isCurry ? holders : undefined,
       newHoldersRight = isCurry ? undefined : holders,
       newPartials = isCurry ? partials : undefined,
       newPartialsRight = isCurry ? undefined : partials;
@@ -41,7 +41,7 @@ function createRecurryWrapper(func, bitmask, wrapFunc, placeholder, thisArg, par
     bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG);
   }
   var newData = [
-    func, bitmask, thisArg, newPartials, newsHolders, newPartialsRight,
+    func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
     newHoldersRight, newArgPos, ary, arity
   ];
 
diff --git a/_getPlaceholder.js b/_getPlaceholder.js
new file mode 100644
index 000000000..ba0d7543b
--- /dev/null
+++ b/_getPlaceholder.js
@@ -0,0 +1,13 @@
+/**
+ * Gets the argument placeholder value for `func`.
+ *
+ * @private
+ * @param {Function} func The function to inspect.
+ * @returns {*} Returns the placeholder value.
+ */
+function getPlaceholder(func) {
+  var object = func;
+  return object.placeholder;
+}
+
+export default getPlaceholder;
diff --git a/_initCloneObject.js b/_initCloneObject.js
index 41d926509..b6c8dd58c 100644
--- a/_initCloneObject.js
+++ b/_initCloneObject.js
@@ -2,6 +2,9 @@ import baseCreate from './_baseCreate';
 import isFunction from './isFunction';
 import isPrototype from './_isPrototype';
 
+/** Built-in value references. */
+var getPrototypeOf = Object.getPrototypeOf;
+
 /**
  * Initializes an object clone.
  *
@@ -10,11 +13,9 @@ import isPrototype from './_isPrototype';
  * @returns {Object} Returns the initialized clone.
  */
 function initCloneObject(object) {
-  if (isPrototype(object)) {
-    return {};
-  }
-  var Ctor = object.constructor;
-  return baseCreate(isFunction(Ctor) ? Ctor.prototype : undefined);
+  return (isFunction(object.constructor) && !isPrototype(object))
+    ? baseCreate(getPrototypeOf(object))
+    : {};
 }
 
 export default initCloneObject;
diff --git a/_isPrototype.js b/_isPrototype.js
index f6c7660d0..9214b1c4d 100644
--- a/_isPrototype.js
+++ b/_isPrototype.js
@@ -1,3 +1,5 @@
+import isFunction from './isFunction';
+
 /** Used for built-in method references. */
 var objectProto = Object.prototype;
 
@@ -10,7 +12,7 @@ var objectProto = Object.prototype;
  */
 function isPrototype(value) {
   var Ctor = value && value.constructor,
-      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;
+      proto = (isFunction(Ctor) && Ctor.prototype) || objectProto;
 
   return value === proto;
 }
diff --git a/_mergeData.js b/_mergeData.js
index 3691b8ce5..aef1c8077 100644
--- a/_mergeData.js
+++ b/_mergeData.js
@@ -39,9 +39,9 @@ function mergeData(data, source) {
       isCommon = newBitmask < (BIND_FLAG | BIND_KEY_FLAG | ARY_FLAG);
 
   var isCombo =
-    (srcBitmask == ARY_FLAG && (bitmask == CURRY_FLAG)) ||
-    (srcBitmask == ARY_FLAG && (bitmask == REARG_FLAG) && (data[7].length <= source[8])) ||
-    (srcBitmask == (ARY_FLAG | REARG_FLAG) && (source[7].length <= source[8]) && (bitmask == CURRY_FLAG));
+    ((srcBitmask == ARY_FLAG) && (bitmask == CURRY_FLAG)) ||
+    ((srcBitmask == ARY_FLAG) && (bitmask == REARG_FLAG) && (data[7].length <= source[8])) ||
+    ((srcBitmask == (ARY_FLAG | REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == CURRY_FLAG));
 
   // Exit early if metadata can't be merged.
   if (!(isCommon || isCombo)) {
@@ -51,7 +51,7 @@ function mergeData(data, source) {
   if (srcBitmask & BIND_FLAG) {
     data[2] = source[2];
     // Set when currying a bound function.
-    newBitmask |= (bitmask & BIND_FLAG) ? 0 : CURRY_BOUND_FLAG;
+    newBitmask |= bitmask & BIND_FLAG ? 0 : CURRY_BOUND_FLAG;
   }
   // Compose partial arguments.
   var value = source[3];
diff --git a/_replaceHolders.js b/_replaceHolders.js
index 274726863..7a2e62e78 100644
--- a/_replaceHolders.js
+++ b/_replaceHolders.js
@@ -17,7 +17,8 @@ function replaceHolders(array, placeholder) {
       result = [];
 
   while (++index < length) {
-    if (array[index] === placeholder) {
+    var value = array[index];
+    if (value === placeholder || value === PLACEHOLDER) {
       array[index] = PLACEHOLDER;
       result[++resIndex] = index;
     }
diff --git a/bind.js b/bind.js
index 350ff3d54..2cc4fc5c2 100644
--- a/bind.js
+++ b/bind.js
@@ -1,4 +1,5 @@
 import createWrapper from './_createWrapper';
+import getPlaceholder from './_getPlaceholder';
 import replaceHolders from './_replaceHolders';
 import rest from './rest';
 
@@ -44,9 +45,7 @@ var BIND_FLAG = 1,
 var bind = rest(function(func, thisArg, partials) {
   var bitmask = BIND_FLAG;
   if (partials.length) {
-    var placeholder = bind.placeholder,
-        holders = replaceHolders(partials, placeholder);
-
+    var holders = replaceHolders(partials, getPlaceholder(bind));
     bitmask |= PARTIAL_FLAG;
   }
   return createWrapper(func, bitmask, thisArg, partials, holders);
diff --git a/bindKey.js b/bindKey.js
index c0bfd695c..882b86b6f 100644
--- a/bindKey.js
+++ b/bindKey.js
@@ -1,4 +1,5 @@
 import createWrapper from './_createWrapper';
+import getPlaceholder from './_getPlaceholder';
 import replaceHolders from './_replaceHolders';
 import rest from './rest';
 
@@ -54,9 +55,7 @@ var BIND_FLAG = 1,
 var bindKey = rest(function(object, key, partials) {
   var bitmask = BIND_FLAG | BIND_KEY_FLAG;
   if (partials.length) {
-    var placeholder = bindKey.placeholder,
-        holders = replaceHolders(partials, placeholder);
-
+    var holders = replaceHolders(partials, getPlaceholder(bindKey));
     bitmask |= PARTIAL_FLAG;
   }
   return createWrapper(key, bitmask, object, partials, holders);
diff --git a/isError.js b/isError.js
index 01565170c..a1e2d82b9 100644
--- a/isError.js
+++ b/isError.js
@@ -33,9 +33,8 @@ function isError(value) {
   if (!isObjectLike(value)) {
     return false;
   }
-  var Ctor = value.constructor;
   return (objectToString.call(value) == errorTag) ||
-    (typeof Ctor == 'function' && objectToString.call(Ctor.prototype) == errorTag);
+    (typeof value.message == 'string' && typeof value.name == 'string');
 }
 
 export default isError;
diff --git a/isPlainObject.js b/isPlainObject.js
index 8e11c789e..1b375b87e 100644
--- a/isPlainObject.js
+++ b/isPlainObject.js
@@ -54,10 +54,7 @@ function isPlainObject(value) {
       objectToString.call(value) != objectTag || isHostObject(value)) {
     return false;
   }
-  var proto = objectProto;
-  if (typeof value.constructor == 'function') {
-    proto = getPrototypeOf(value);
-  }
+  var proto = getPrototypeOf(value);
   if (proto === null) {
     return true;
   }
diff --git a/lodash.default.js b/lodash.default.js
index 91e7bb0aa..d8b4684a6 100644
--- a/lodash.default.js
+++ b/lodash.default.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * lodash 4.5.0 (Custom Build) <https://lodash.com/>
+ * lodash 4.5.1 (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="es" -o ./`
  * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
@@ -44,7 +44,7 @@ import toInteger from './toInteger';
 import lodash from './wrapperLodash';
 
 /** Used as the semantic version number. */
-var VERSION = '4.5.0';
+var VERSION = '4.5.1';
 
 /** Used to compose bitmasks for wrapper metadata. */
 var BIND_KEY_FLAG = 2;
diff --git a/lodash.js b/lodash.js
index 4cd73ed0d..b493d24cf 100644
--- a/lodash.js
+++ b/lodash.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * lodash 4.5.0 (Custom Build) <https://lodash.com/>
+ * lodash 4.5.1 (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="es" -o ./`
  * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
diff --git a/mapKeys.js b/mapKeys.js
index c0b7e3b86..9ae244ac8 100644
--- a/mapKeys.js
+++ b/mapKeys.js
@@ -4,7 +4,8 @@ import baseIteratee from './_baseIteratee';
 /**
  * The opposite of `_.mapValues`; this method creates an object with the
  * same values as `object` and keys generated by running each own enumerable
- * property of `object` through `iteratee`.
+ * property of `object` through `iteratee`. The iteratee is invoked with
+ * three arguments: (value, key, object).
  *
  * @static
  * @memberOf _
diff --git a/mapValues.js b/mapValues.js
index 86b6957d5..c7ad0bf47 100644
--- a/mapValues.js
+++ b/mapValues.js
@@ -4,7 +4,7 @@ import baseIteratee from './_baseIteratee';
 /**
  * Creates an object with the same keys as `object` and values generated by
  * running each own enumerable property of `object` through `iteratee`. The
- * iteratee function is invoked with three arguments: (value, key, object).
+ * iteratee is invoked with three arguments: (value, key, object).
  *
  * @static
  * @memberOf _
diff --git a/omitBy.js b/omitBy.js
index f61c3dabd..8ee1a4696 100644
--- a/omitBy.js
+++ b/omitBy.js
@@ -2,9 +2,10 @@ import baseIteratee from './_baseIteratee';
 import basePickBy from './_basePickBy';
 
 /**
- * The opposite of `_.pickBy`; this method creates an object composed of the
- * own and inherited enumerable properties of `object` that `predicate`
- * doesn't return truthy for.
+ * The opposite of `_.pickBy`; this method creates an object composed of
+ * the own and inherited enumerable properties of `object` that `predicate`
+ * doesn't return truthy for. The predicate is invoked with two arguments:
+ * (value, key).
  *
  * @static
  * @memberOf _
@@ -20,7 +21,7 @@ import basePickBy from './_basePickBy';
  * // => { 'b': '2' }
  */
 function omitBy(object, predicate) {
-  predicate = baseIteratee(predicate, 2);
+  predicate = baseIteratee(predicate);
   return basePickBy(object, function(value, key) {
     return !predicate(value, key);
   });
diff --git a/package.json b/package.json
index e8af30c25..59f926e0f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lodash-es",
-  "version": "4.5.0",
+  "version": "4.5.1",
   "description": "Lodash exported as ES modules.",
   "homepage": "https://lodash.com/custom-builds",
   "license": "MIT",
diff --git a/partial.js b/partial.js
index 1fcbf12b5..520c468f9 100644
--- a/partial.js
+++ b/partial.js
@@ -1,4 +1,5 @@
 import createWrapper from './_createWrapper';
+import getPlaceholder from './_getPlaceholder';
 import replaceHolders from './_replaceHolders';
 import rest from './rest';
 
@@ -38,9 +39,7 @@ var PARTIAL_FLAG = 32;
  * // => 'hi fred'
  */
 var partial = rest(function(func, partials) {
-  var placeholder = partial.placeholder,
-      holders = replaceHolders(partials, placeholder);
-
+  var holders = replaceHolders(partials, getPlaceholder(partial));
   return createWrapper(func, PARTIAL_FLAG, undefined, partials, holders);
 });
 
diff --git a/partialRight.js b/partialRight.js
index d1c0b1295..8607955a1 100644
--- a/partialRight.js
+++ b/partialRight.js
@@ -1,4 +1,5 @@
 import createWrapper from './_createWrapper';
+import getPlaceholder from './_getPlaceholder';
 import replaceHolders from './_replaceHolders';
 import rest from './rest';
 
@@ -37,9 +38,7 @@ var PARTIAL_RIGHT_FLAG = 64;
  * // => 'hello fred'
  */
 var partialRight = rest(function(func, partials) {
-  var placeholder = partialRight.placeholder,
-      holders = replaceHolders(partials, placeholder);
-
+  var holders = replaceHolders(partials, getPlaceholder(partialRight));
   return createWrapper(func, PARTIAL_RIGHT_FLAG, undefined, partials, holders);
 });
 
diff --git a/pickBy.js b/pickBy.js
index 109dd4115..3412a1928 100644
--- a/pickBy.js
+++ b/pickBy.js
@@ -19,7 +19,7 @@ import basePickBy from './_basePickBy';
  * // => { 'a': 1, 'c': 3 }
  */
 function pickBy(object, predicate) {
-  return object == null ? {} : basePickBy(object, baseIteratee(predicate, 2));
+  return object == null ? {} : basePickBy(object, baseIteratee(predicate));
 }
 
 export default pickBy;
diff --git a/pull.js b/pull.js
index d8adc2b88..07b996488 100644
--- a/pull.js
+++ b/pull.js
@@ -6,7 +6,8 @@ import rest from './rest';
  * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
  * for equality comparisons.
  *
- * **Note:** Unlike `_.without`, this method mutates `array`.
+ * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
+ * to remove elements from an array by predicate.
  *
  * @static
  * @memberOf _
diff --git a/remove.js b/remove.js
index c929c55cf..9682cce30 100644
--- a/remove.js
+++ b/remove.js
@@ -3,10 +3,11 @@ import basePullAt from './_basePullAt';
 
 /**
  * Removes all elements from `array` that `predicate` returns truthy for
- * and returns an array of the removed elements. The predicate is invoked with
- * three arguments: (value, index, array).
+ * and returns an array of the removed elements. The predicate is invoked
+ * with three arguments: (value, index, array).
  *
- * **Note:** Unlike `_.filter`, this method mutates `array`.
+ * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
+ * to pull elements from an array by value.
  *
  * @static
  * @memberOf _
diff --git a/times.js b/times.js
index efdcfb016..33bb868d9 100644
--- a/times.js
+++ b/times.js
@@ -12,8 +12,8 @@ var MAX_ARRAY_LENGTH = 4294967295;
 var nativeMin = Math.min;
 
 /**
- * Invokes the iteratee function `n` times, returning an array of the results
- * of each invocation. The iteratee is invoked with one argument; (index).
+ * Invokes the iteratee `n` times, returning an array of the results of
+ * each invocation. The iteratee is invoked with one argument; (index).
  *
  * @static
  * @memberOf _
diff --git a/transform.js b/transform.js
index effc6d127..9f769ecf3 100644
--- a/transform.js
+++ b/transform.js
@@ -7,6 +7,9 @@ import isFunction from './isFunction';
 import isObject from './isObject';
 import isTypedArray from './isTypedArray';
 
+/** Built-in value references. */
+var getPrototypeOf = Object.getPrototypeOf;
+
 /**
  * An alternative to `_.reduce`; this method transforms `object` to a new
  * `accumulator` object which is the result of running each of its own enumerable
@@ -45,7 +48,7 @@ function transform(object, iteratee, accumulator) {
       if (isArr) {
         accumulator = isArray(object) ? new Ctor : [];
       } else {
-        accumulator = baseCreate(isFunction(Ctor) ? Ctor.prototype : undefined);
+        accumulator = isFunction(Ctor) ? baseCreate(getPrototypeOf(object)) : {};
       }
     } else {
       accumulator = {};