web3-utils - npm Package Compare versions

Comparing version 1.0.0-beta.22 to 1.0.0-beta.23

package.json

 {
     "name": "web3-utils",
     "namespace": "ethereum",
-    "version": "1.0.0-beta.22",
+    "version": "1.0.0-beta.23",
     "description": "Collection of utility functions used in web3.js.",
@@ -6,0 +6,0 @@ "repository": "https://github.com/ethereum/web3.js/tree/master/packages/web3-utils",

src/index.js

@@ -117,3 +117,3 @@ /*
 var hexToAscii = function(hex) {
-    if (!utils.isHex(hex))
+    if (!utils.isHexStrict(hex))
         throw new Error('The parameter must be a valid HEX string.');
@@ -271,2 +271,3 @@
     isHex: utils.isHex,
+    isHexStrict: utils.isHexStrict,
     sha3: utils.sha3,
@@ -312,4 +313,5 @@ keccak256: utils.sha3,
     padRight: utils.rightPad,
-    rightPad: utils.rightPad
+    rightPad: utils.rightPad,
+    toTwosComplement: utils.toTwosComplement
 };
 

src/soliditySha3.js

@@ -66,3 +66,3 @@ /*
     if (type === 'string') {
-        if (utils.isHex(arg)) {
+        if (utils.isHexStrict(arg)) {
             return new BN(arg.replace(/0x/i,''), 16);
@@ -69,0 +69,0 @@ } else {

src/utils.js

@@ -70,2 +70,13 @@ /*
 /**
+ * Takes and input transforms it into BN and if it is negative value, into two's complement
+ *
+ * @method toTwosComplement
+ * @param {Number|String|BN} number
+ * @return {String}
+ */
+var toTwosComplement = function (number) {
+    return '0x'+ toBN(number).toTwos(256).toString(16, 64);
+};
+
+/**
  * Checks if the given string is an address
@@ -186,3 +197,3 @@ *
 var hexToUtf8 = function(hex) {
-    if (!isHex(hex))
+    if (!isHexStrict(hex))
         throw new Error('The parameter "'+ hex +'" must be a valid HEX string.');
@@ -292,3 +303,3 @@
 
-    if (!isHex(hex)) {
+    if (!isHexStrict(hex)) {
         throw new Error('Given value "'+ hex +'" is not a valid hex string.');
@@ -346,2 +357,13 @@ }
 /**
+ * Check if string is HEX, requires a 0x in front
+ *
+ * @method isHexStrict
+ * @param {String} hex to be checked
+ * @returns {Boolean}
+ */
+var isHexStrict = function (hex) {
+    return ((_.isString(hex) || _.isNumber(hex)) && /^(-)?0x[0-9a-f]*$/i.test(hex));
+};
+
+/**
  * Check if string is HEX
@@ -354,3 +376,3 @@ *
 var isHex = function (hex) {
-    return ((_.isString(hex) || _.isNumber(hex)) && /^(-)?0x[0-9a-f]*$/i.test(hex));
+    return ((_.isString(hex) || _.isNumber(hex)) && /^(-0x)?(0x)?[0-9a-f]*$/i.test(hex));
 };
@@ -407,3 +429,3 @@
 var sha3 = function (value) {
-    if (isHex(value) && /^0x/i.test((value).toString())) {
+    if (isHexStrict(value) && /^0x/i.test((value).toString())) {
         value = hexToBytes(value);
@@ -442,5 +464,7 @@ }
     isHex: isHex,
+    isHexStrict: isHexStrict,
     leftPad: leftPad,
     rightPad: rightPad,
+    toTwosComplement: toTwosComplement,
     sha3: sha3
 };

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Improved metrics

Total package byte prevSize

32213

increased by2.38%

Lines of code

941

increased by2.62%

No dependency changes