hash-it - npm Package Compare versions

Comparing version 1.2.1 to 1.3.0

CHANGELOG.md

 # hashIt CHANGELOG
 
+#### 1.3.0
+* Add hashIt.isUndefined, hashIt.isNull, and hashIt.isEmpty methods
+* Reorder switch statements in replacer and getValueForStringification to reflect most likely to least likely (improves performance a touch)
+* Remove "Number" from number stringification
+* Leverage prependTypeToString whereever possible
+* Include Arguments object class
+
 #### 1.2.1
@@ -4,0 +11,0 @@ * Calculation of Math hashCode now uses properties

dist/hash-it.js

@@ -71,2 +71,13 @@ var hashIt =
 	
+	var UNDEFINED_HASH = hash(undefined);
+	
+	var NULL_HASH = hash(null);
+	
+	var EMPTY_ARRAY_HASH = hash([]);
+	var EMPTY_MAP_HASH = hash(new Map());
+	var EMPTY_NUMBER_HASH = hash(0);
+	var EMPTY_OBJECT_HASH = hash({});
+	var EMPTY_SET_HASH = hash(new Set());
+	var EMPTY_STRING_HASH = hash('');
+	
 	/**
@@ -96,2 +107,35 @@ * determine if all objects passed are equal in value to one another
 	
+	/**
+	 * determine if object is empty, meaning it is an array / object / map / set with values populated,
+	 * or is a string with no length, or is undefined or null
+	 *
+	 * @param {any} object
+	 * @returns {boolean}
+	 */
+	hash.isEmpty = function (object) {
+	  var objectHash = hash(object);
+	
+	  return objectHash === UNDEFINED_HASH || objectHash === NULL_HASH || objectHash === EMPTY_ARRAY_HASH || objectHash === EMPTY_MAP_HASH || objectHash === EMPTY_NUMBER_HASH || objectHash === EMPTY_OBJECT_HASH || objectHash === EMPTY_SET_HASH || objectHash === EMPTY_STRING_HASH;
+	};
+	
+	/**
+	 * determine if object is null
+	 *
+	 * @param {any} object
+	 * @returns {boolean}
+	 */
+	hash.isNull = function (object) {
+	  return hash(object) === NULL_HASH;
+	};
+	
+	/**
+	 * determine if object is undefined
+	 *
+	 * @param {any} object
+	 * @returns {boolean}
+	 */
+	hash.isUndefined = function (object) {
+	  return hash(object) === UNDEFINED_HASH;
+	};
+	
 	exports.default = hash;
@@ -170,23 +214,21 @@ module.exports = exports['default'];
 	    switch (toStringType) {
-	      case _toString.types.ARRAY_BUFFER:
+	      case _toString.types.NUMBER:
+	      case _toString.types.STRING:
 	        return {
-	          v: prependTypeToString(arrayBufferToString(object), type)
+	          v: object
 	        };
 	
-	      case _toString.types.DATA_VIEW:
+	      case _toString.types.ARGUMENTS:
+	      case _toString.types.ARRAY:
+	      case _toString.types.OBJECT:
 	        return {
-	          v: prependTypeToString(arrayBufferToString(object.buffer), type)
+	          v: !!object ? object : prependTypeToString(object, type)
 	        };
 	
-	      case _toString.types.FLOAT_32_ARRAY:
-	      case _toString.types.FLOAT_64_ARRAY:
-	      case _toString.types.INT_8_ARRAY:
-	      case _toString.types.INT_16_ARRAY:
-	      case _toString.types.INT_32_ARRAY:
-	      case _toString.types.UINT_8_ARRAY:
-	      case _toString.types.UINT_8_CLAMPED_ARRAY:
-	      case _toString.types.UINT_16_ARRAY:
-	      case _toString.types.UINT_32_ARRAY:
+	      case _toString.types.ERROR:
+	      case _toString.types.NULL:
+	      case _toString.types.REGEXP:
+	      case _toString.types.UNDEFINED:
 	        return {
-	          v: type + ' [' + object.join(',') + ']'
+	          v: prependTypeToString(object, type)
 	        };
@@ -209,11 +251,14 @@
 	
-	      case _toString.types.ERROR:
-	      case _toString.types.NULL:
-	      case _toString.types.NUMBER:
-	      case _toString.types.REGEXP:
-	      case _toString.types.UNDEFINED:
+	      case _toString.types.SYMBOL:
 	        return {
-	          v: prependTypeToString(object, type)
+	          v: object.toString()
 	        };
 	
+	      case _toString.types.PROMISE:
+	      case _toString.types.WEAKMAP:
+	      case _toString.types.WEAKSET:
+	        return {
+	          v: prependTypeToString('NOT_ENUMERABLE', type)
+	        };
+	
 	      case _toString.types.MAP:
@@ -231,12 +276,25 @@ case _toString.types.SET:
 	
-	      case _toString.types.OBJECT:
+	      case _toString.types.ARRAY_BUFFER:
 	        return {
-	          v: !!object ? object : prependTypeToString(object, type)
+	          v: prependTypeToString(arrayBufferToString(object), type)
 	        };
 	
-	      case _toString.types.SYMBOL:
+	      case _toString.types.DATA_VIEW:
 	        return {
-	          v: object.toString()
+	          v: prependTypeToString(arrayBufferToString(object.buffer), type)
 	        };
 	
+	      case _toString.types.FLOAT_32_ARRAY:
+	      case _toString.types.FLOAT_64_ARRAY:
+	      case _toString.types.INT_8_ARRAY:
+	      case _toString.types.INT_16_ARRAY:
+	      case _toString.types.INT_32_ARRAY:
+	      case _toString.types.UINT_8_ARRAY:
+	      case _toString.types.UINT_8_CLAMPED_ARRAY:
+	      case _toString.types.UINT_16_ARRAY:
+	      case _toString.types.UINT_32_ARRAY:
+	        return {
+	          v: prependTypeToString(object.join(','), type)
+	        };
+	
 	      case _toString.types.MATH:
@@ -253,9 +311,2 @@ var mathObject = {};
 	
-	      case _toString.types.PROMISE:
-	      case _toString.types.WEAKMAP:
-	      case _toString.types.WEAKSET:
-	        return {
-	          v: type + '--NOT_ENUMERABLE'
-	        };
-	
 	      default:
@@ -287,2 +338,27 @@ return {
 	    switch (type) {
+	      case _toString.types.NUMBER:
+	      case _toString.types.STRING:
+	        return value;
+	
+	      case _toString.types.ARGUMENTS:
+	      case _toString.types.ARRAY:
+	      case _toString.types.OBJECT:
+	        if (!value) {
+	          return prependTypeToString(value, type);
+	        }
+	
+	        if (++recursiveCounter > 255) {
+	          return 'Undefined undefined';
+	        }
+	
+	        index = stack.indexOf(value);
+	
+	        if (!~index) {
+	          stack.push(value);
+	
+	          return value;
+	        }
+	
+	        return '*Recursive-' + index;
+	
 	      case _toString.types.ARRAY_BUFFER:
@@ -315,22 +391,2 @@ case _toString.types.DATA_VIEW:
 	
-	      case _toString.types.ARRAY:
-	      case _toString.types.OBJECT:
-	        if (!value) {
-	          return prependTypeToString(value, type);
-	        }
-	
-	        if (++recursiveCounter > 255) {
-	          return 'Undefined undefined';
-	        }
-	
-	        index = stack.indexOf(value);
-	
-	        if (!~index) {
-	          stack.push(value);
-	
-	          return value;
-	        }
-	
-	        return '*Recursive-' + index;
-	
 	      default:
@@ -386,5 +442,3 @@ return value;
 	var stringify = function stringify(object) {
-	  var value = getValueForStringification(object);
-	
-	  return tryCatch(value);
+	  return tryCatch(getValueForStringification(object));
 	};
@@ -556,2 +610,3 @@
 	exports.__esModule = true;
+	var ARGUMENTS = '[object Arguments]';
 	var ARRAY = '[object Array]';
@@ -590,2 +645,3 @@ var ARRAY_BUFFER = '[object ArrayBuffer]';
 	var TYPES = {
+	  ARGUMENTS: ARGUMENTS,
 	  ARRAY: ARRAY,
@@ -592,0 +648,0 @@ ARRAY_BUFFER: ARRAY_BUFFER,

dist/hash-it.min.js

@@ -1,1 +0,1 @@
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Math]",T="[object Null]",b="[object Number]",N="[object Object]",d="[object Promise]",v="[object RegExp]",S="[object Set]",I="[object String]",j="[object Symbol]",U="[object Uint8Array]",O="[object Uint8ClampedArray]",M="[object Uint16Array]",Y="[object Uint32Array]",g="[object Undefined]",h="[object WeakMap]",m="[object WeakSet]",F="[object Window]",L={ARGUMENTS:r,ARRAY:n,ARRAY_BUFFER:s,BOOLEAN:c,DATA_VIEW:o,DATE:u,ERROR:a,FLOAT_32_ARRAY:i,FLOAT_64_ARRAY:A,FUNCTION:f,GENERATOR:y,INT_8_ARRAY:p,INT_16_ARRAY:R,INT_32_ARRAY:l,MAP:E,MATH:_,NULL:T,NUMBER:b,OBJECT:N,PROMISE:d,REGEXP:v,SET:S,STRING:I,SYMBOL:j,UINT_8_ARRAY:U,UINT_8_CLAMPED_ARRAY:O,UINT_16_ARRAY:M,UINT_32_ARRAY:Y,UNDEFINED:g,WEAKMAP:h,WEAKSET:m,WINDOW:F},D=function(e){var t=!(arguments.length<=1||void 0===arguments[1])&&arguments[1];return"function"+(t?"*":"")+" "+(e.name||"anonymous")+"("+new Array(e.length+1).join(",arg").slice(1)+"){}"},P=function(e){return Object.prototype.toString.call(e)};t.toFunctionString=D,t.toString=P,t.types=L}]);

lib/index.js

@@ -17,2 +17,13 @@ 'use strict';
 
+var UNDEFINED_HASH = hash(undefined);
+
+var NULL_HASH = hash(null);
+
+var EMPTY_ARRAY_HASH = hash([]);
+var EMPTY_MAP_HASH = hash(new Map());
+var EMPTY_NUMBER_HASH = hash(0);
+var EMPTY_OBJECT_HASH = hash({});
+var EMPTY_SET_HASH = hash(new Set());
+var EMPTY_STRING_HASH = hash('');
+
 /**
@@ -42,3 +53,36 @@ * determine if all objects passed are equal in value to one another
 
+/**
+ * determine if object is empty, meaning it is an array / object / map / set with values populated,
+ * or is a string with no length, or is undefined or null
+ *
+ * @param {any} object
+ * @returns {boolean}
+ */
+hash.isEmpty = function (object) {
+  var objectHash = hash(object);
+
+  return objectHash === UNDEFINED_HASH || objectHash === NULL_HASH || objectHash === EMPTY_ARRAY_HASH || objectHash === EMPTY_MAP_HASH || objectHash === EMPTY_NUMBER_HASH || objectHash === EMPTY_OBJECT_HASH || objectHash === EMPTY_SET_HASH || objectHash === EMPTY_STRING_HASH;
+};
+
+/**
+ * determine if object is null
+ *
+ * @param {any} object
+ * @returns {boolean}
+ */
+hash.isNull = function (object) {
+  return hash(object) === NULL_HASH;
+};
+
+/**
+ * determine if object is undefined
+ *
+ * @param {any} object
+ * @returns {boolean}
+ */
+hash.isUndefined = function (object) {
+  return hash(object) === UNDEFINED_HASH;
+};
+
 exports.default = hash;
 module.exports = exports['default'];

lib/toString.js

 'use strict';
 
 exports.__esModule = true;
+var ARGUMENTS = '[object Arguments]';
 var ARRAY = '[object Array]';
@@ -37,2 +38,3 @@ var ARRAY_BUFFER = '[object ArrayBuffer]';
 var TYPES = {
+  ARGUMENTS: ARGUMENTS,
   ARRAY: ARRAY,
@@ -39,0 +41,0 @@ ARRAY_BUFFER: ARRAY_BUFFER,

lib/utils.js

@@ -67,23 +67,21 @@ 'use strict';
     switch (toStringType) {
-      case _toString.types.ARRAY_BUFFER:
+      case _toString.types.NUMBER:
+      case _toString.types.STRING:
         return {
-          v: prependTypeToString(arrayBufferToString(object), type)
+          v: object
         };
 
-      case _toString.types.DATA_VIEW:
+      case _toString.types.ARGUMENTS:
+      case _toString.types.ARRAY:
+      case _toString.types.OBJECT:
         return {
-          v: prependTypeToString(arrayBufferToString(object.buffer), type)
+          v: !!object ? object : prependTypeToString(object, type)
         };
 
-      case _toString.types.FLOAT_32_ARRAY:
-      case _toString.types.FLOAT_64_ARRAY:
-      case _toString.types.INT_8_ARRAY:
-      case _toString.types.INT_16_ARRAY:
-      case _toString.types.INT_32_ARRAY:
-      case _toString.types.UINT_8_ARRAY:
-      case _toString.types.UINT_8_CLAMPED_ARRAY:
-      case _toString.types.UINT_16_ARRAY:
-      case _toString.types.UINT_32_ARRAY:
+      case _toString.types.ERROR:
+      case _toString.types.NULL:
+      case _toString.types.REGEXP:
+      case _toString.types.UNDEFINED:
         return {
-          v: type + ' [' + object.join(',') + ']'
+          v: prependTypeToString(object, type)
         };
@@ -106,11 +104,14 @@
 
-      case _toString.types.ERROR:
-      case _toString.types.NULL:
-      case _toString.types.NUMBER:
-      case _toString.types.REGEXP:
-      case _toString.types.UNDEFINED:
+      case _toString.types.SYMBOL:
         return {
-          v: prependTypeToString(object, type)
+          v: object.toString()
         };
 
+      case _toString.types.PROMISE:
+      case _toString.types.WEAKMAP:
+      case _toString.types.WEAKSET:
+        return {
+          v: prependTypeToString('NOT_ENUMERABLE', type)
+        };
+
       case _toString.types.MAP:
@@ -128,12 +129,25 @@ case _toString.types.SET:
 
-      case _toString.types.OBJECT:
+      case _toString.types.ARRAY_BUFFER:
         return {
-          v: !!object ? object : prependTypeToString(object, type)
+          v: prependTypeToString(arrayBufferToString(object), type)
         };
 
-      case _toString.types.SYMBOL:
+      case _toString.types.DATA_VIEW:
         return {
-          v: object.toString()
+          v: prependTypeToString(arrayBufferToString(object.buffer), type)
         };
 
+      case _toString.types.FLOAT_32_ARRAY:
+      case _toString.types.FLOAT_64_ARRAY:
+      case _toString.types.INT_8_ARRAY:
+      case _toString.types.INT_16_ARRAY:
+      case _toString.types.INT_32_ARRAY:
+      case _toString.types.UINT_8_ARRAY:
+      case _toString.types.UINT_8_CLAMPED_ARRAY:
+      case _toString.types.UINT_16_ARRAY:
+      case _toString.types.UINT_32_ARRAY:
+        return {
+          v: prependTypeToString(object.join(','), type)
+        };
+
       case _toString.types.MATH:
@@ -150,9 +164,2 @@ var mathObject = {};
 
-      case _toString.types.PROMISE:
-      case _toString.types.WEAKMAP:
-      case _toString.types.WEAKSET:
-        return {
-          v: type + '--NOT_ENUMERABLE'
-        };
-
       default:
@@ -184,2 +191,27 @@ return {
     switch (type) {
+      case _toString.types.NUMBER:
+      case _toString.types.STRING:
+        return value;
+
+      case _toString.types.ARGUMENTS:
+      case _toString.types.ARRAY:
+      case _toString.types.OBJECT:
+        if (!value) {
+          return prependTypeToString(value, type);
+        }
+
+        if (++recursiveCounter > 255) {
+          return 'Undefined undefined';
+        }
+
+        index = stack.indexOf(value);
+
+        if (!~index) {
+          stack.push(value);
+
+          return value;
+        }
+
+        return '*Recursive-' + index;
+
       case _toString.types.ARRAY_BUFFER:
@@ -212,22 +244,2 @@ case _toString.types.DATA_VIEW:
 
-      case _toString.types.ARRAY:
-      case _toString.types.OBJECT:
-        if (!value) {
-          return prependTypeToString(value, type);
-        }
-
-        if (++recursiveCounter > 255) {
-          return 'Undefined undefined';
-        }
-
-        index = stack.indexOf(value);
-
-        if (!~index) {
-          stack.push(value);
-
-          return value;
-        }
-
-        return '*Recursive-' + index;
-
       default:
@@ -283,5 +295,3 @@ return value;
 var stringify = function stringify(object) {
-  var value = getValueForStringification(object);
-
-  return tryCatch(value);
+  return tryCatch(getValueForStringification(object));
 };
@@ -288,0 +298,0 @@

package.json

@@ -83,3 +83,3 @@ {
   },
-  "version": "1.2.1"
+  "version": "1.3.0"
 }

README.md

@@ -5,3 +5,3 @@ # hashIt
 
-#### Installation
+### Installation
 
@@ -12,3 +12,3 @@ ```
 
-#### Usage
+### Usage
 
@@ -33,3 +33,3 @@ ```javascript
 
-#### Overview
+### Overview
 
@@ -53,2 +53,3 @@ `hashIt` has a simple goal: provide a fast and consistent hashCode for any object type that is uniquely based on its values. This has a number of uses such as duplication prevention or fast equality comparisons.
 Here is the list of object classes that have been tested and shown to produce unique hashCodes:
+* `Arguments`
 * `Array`
@@ -87,6 +88,21 @@ * `ArrayBuffer`
 
-#### Additional functions
+### Utility functions
 
-* isEqual(object1, object2[, object3, ..., objectN]) *returns `Boolean`*
-  * Compares all objects passed to it to determine if they are equal to one another based on hashCode
+**isEmpty(object)** *returns `Boolean`*
+
+Determines if object is empty based on hashCode, with empty defined as:
+* Empty array (`[]`)
+* Empty map (`new Map()`)
+* Empty number, or zero (`0`)
+* Empty object (`{}`)
+* Empty set (`new Set()`)
+* Empty string (`''`)
+* Undefined (`undefined`)
+* Null (`null`)
+
+This differs from the implementation by `lodash`, where a value is considered empty if they it is not an `Array`, `Object`, `Map`, or `Set`. Think of this definition of empty as "having no value(s)".
+
+**isEqual(object1, object2[, object3, ..., objectN])** *returns `Boolean`*
+
+Compares all objects passed to it to determine if they are equal to one another based on hashCode
   
@@ -105,7 +121,15 @@ ```javascript
 
-#### Gotchas
+**isNull(object)** *returns `Boolean`*
 
+Determines if object is null based on hashCode
+
+**isUndefined(object)** *returns `Boolean`*
+
+Determines if object is undefined based on hashCode
+
+### Gotchas
+
 While the hashes will be consistent when calculated within the same browser environment, there is no guarantee that the hashCode will be the same across different browsers due to browser-specific implementations of features. A vast majority of the time things line up, but there are some edge cases that cause differences, so just something to be mindful of.
 
-#### Support
+### Support
 
@@ -121,3 +145,3 @@ `hashIt` has been tested on the following browsers:
 
-#### Development
+### Development
 
@@ -124,0 +148,0 @@ Standard stuff, clone the repo and `npm i` to get the dependencies. npm scripts available:

New alerts

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License

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Found 1 instance in 1 package

Fixed alerts

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This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

75511

increased by10.25%

Lines of code

1099

increased by9.57%

Number of lines in readme file

152

increased by18.75%

No dependency changes