From d931d6e8e8716d32c0aed4a202d77295f77f4cc0 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Thu, 9 Feb 2017 23:14:09 -0800
Subject: [PATCH] Simplify isType methods.

---
 isArguments.js  | 8 +++-----
 isSet.js        | 3 +--
 isString.js     | 7 +++----
 isSymbol.js     | 7 +++----
 isTypedArray.js | 6 ++----
 isWeakMap.js    | 3 +--
 isWeakSet.js    | 5 ++---
 7 files changed, 15 insertions(+), 24 deletions(-)

diff --git a/isArguments.js b/isArguments.js
index c69cceb69..6e2961242 100644
--- a/isArguments.js
+++ b/isArguments.js
@@ -1,5 +1,4 @@
-import baseGetTag from './.internal/baseGetTag.js'
-import isObjectLike from './isObjectLike.js'
+import getTag from './.internal/getTag.js'
 
 /**
  * Checks if `value` is likely an `arguments` object.
@@ -7,8 +6,7 @@ import isObjectLike from './isObjectLike.js'
  * @since 0.1.0
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is an `arguments` object,
- *  else `false`.
+ * @returns {boolean} Returns `true` if `value` is an `arguments` object, else `false`.
  * @example
  *
  * isArguments(function() { return arguments }())
@@ -18,7 +16,7 @@ import isObjectLike from './isObjectLike.js'
  * // => false
  */
 function isArguments(value) {
-  return isObjectLike(value) && baseGetTag(value) == '[object Arguments]'
+  return typeof value == 'object' && value != null && getTag(value) == '[object Arguments]'
 }
 
 export default isArguments
diff --git a/isSet.js b/isSet.js
index ffdb7fb4b..6a3d21485 100644
--- a/isSet.js
+++ b/isSet.js
@@ -1,5 +1,4 @@
 import getTag from './.internal/getTag.js'
-import isObjectLike from './isObjectLike.js'
 import nodeUtil from './.internal/nodeUtil.js'
 
 /* Node.js helper references. */
@@ -22,6 +21,6 @@ const nodeIsSet = nodeUtil && nodeUtil.isSet
  */
 const isSet = nodeIsSet
   ? value => nodeIsSet(value)
-  : value => isObjectLike(value) && getTag(value) == '[object Set]'
+  : value => typeof value == 'object' && value != null && getTag(value) == '[object Set]'
 
 export default isSet
diff --git a/isString.js b/isString.js
index 710f9ba36..b9ec3ae59 100644
--- a/isString.js
+++ b/isString.js
@@ -1,5 +1,4 @@
-import baseGetTag from './.internal/baseGetTag.js'
-import isObjectLike from './isObjectLike.js'
+import getTag from './.internal/getTag.js'
 
 /**
  * Checks if `value` is classified as a `String` primitive or object.
@@ -17,8 +16,8 @@ import isObjectLike from './isObjectLike.js'
  * // => false
  */
 function isString(value) {
-  return typeof value == 'string' ||
-    (!Array.isArray(value) && isObjectLike(value) && baseGetTag(value) == '[object String]')
+  const type = typeof value
+  return type == 'string' || (type == 'object' && value != null && !Array.isArray(value) && getTag(value) == '[object String]')
 }
 
 export default isString
diff --git a/isSymbol.js b/isSymbol.js
index f1d387fb4..8ea537f4e 100644
--- a/isSymbol.js
+++ b/isSymbol.js
@@ -1,5 +1,4 @@
-import baseGetTag from './.internal/baseGetTag.js'
-import isObjectLike from './isObjectLike.js'
+import getTag from './.internal/getTag.js'
 
 /**
  * Checks if `value` is classified as a `Symbol` primitive or object.
@@ -17,8 +16,8 @@ import isObjectLike from './isObjectLike.js'
  * // => false
  */
 function isSymbol(value) {
-  return typeof value == 'symbol' ||
-    (isObjectLike(value) && baseGetTag(value) == '[object Symbol]')
+  const type = typeof value
+  return type == 'symbol' || (type == 'object' && value != null && getTag(value) == '[object Symbol]')
 }
 
 export default isSymbol
diff --git a/isTypedArray.js b/isTypedArray.js
index c51f45abf..89259a189 100644
--- a/isTypedArray.js
+++ b/isTypedArray.js
@@ -1,6 +1,4 @@
-import baseGetTag from './.internal/baseGetTag.js'
-import isLength from './isLength.js'
-import isObjectLike from './isObjectLike.js'
+import getTag from './.internal/getTag.js'
 import nodeUtil from './.internal/nodeUtil.js'
 
 /** Used to match `toStringTag` values of typed arrays. */
@@ -26,6 +24,6 @@ const nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray
  */
 const isTypedArray = nodeIsTypedArray
   ? value => nodeIsTypedArray(value)
-  : value => isObjectLike(value) && isLength(value.length) && reTypedTag.test(baseGetTag(value))
+  : value => typeof value == 'object' && value != null && reTypedTag.test(getTag(value))
 
 export default isTypedArray
diff --git a/isWeakMap.js b/isWeakMap.js
index 0271dca45..0f9dd8163 100644
--- a/isWeakMap.js
+++ b/isWeakMap.js
@@ -1,5 +1,4 @@
 import getTag from './.internal/getTag.js'
-import isObjectLike from './isObjectLike.js'
 
 /**
  * Checks if `value` is classified as a `WeakMap` object.
@@ -17,7 +16,7 @@ import isObjectLike from './isObjectLike.js'
  * // => false
  */
 function isWeakMap(value) {
-  return isObjectLike(value) && getTag(value) == '[object WeakMap]'
+  return typeof value == 'object' && value != null && getTag(value) == '[object WeakMap]'
 }
 
 export default isWeakMap
diff --git a/isWeakSet.js b/isWeakSet.js
index d0ad9f4a8..24b1322b8 100644
--- a/isWeakSet.js
+++ b/isWeakSet.js
@@ -1,5 +1,4 @@
-import baseGetTag from './.internal/baseGetTag.js'
-import isObjectLike from './isObjectLike.js'
+import getTag from './.internal/getTag.js'
 
 /**
  * Checks if `value` is classified as a `WeakSet` object.
@@ -17,7 +16,7 @@ import isObjectLike from './isObjectLike.js'
  * // => false
  */
 function isWeakSet(value) {
-  return isObjectLike(value) && baseGetTag(value) == '[object WeakSet]'
+  return typeof value == 'object' && value != null && getTag(value) == '[object WeakSet]'
 }
 
 export default isWeakSet