Base64 - npm Package Compare versions

Comparing version 1.1.0 to 1.2.0

base64.js

@@ -31,22 +31,28 @@ (function(f) {
   // encoder
-  // [https://gist.github.com/999166] by [https://github.com/nignag]
   function btoa(input) {
-    var str = String (input);
-    for (
-      // initialize result and counter
-      var block, charCode, idx = 0, map = chars, output = '';
-      // if the next str index does not exist:
-      //   change the mapping table to "="
-      //   check if d has no fractional digits
-      str.charAt (idx | 0) || (map = '=', idx % 1);
-      // "8 - idx % 1 * 8" generates the sequence 2, 4, 6, 8
-      output += map.charAt (63 & block >> 8 - idx % 1 * 8)
-    ) {
-      charCode = str.charCodeAt (idx += 3 / 4);
-      if (charCode > 0xFF) {
+    var data = String (input), o1, o2, o3, bits, i = 0, acc = '';
+
+    while (i < data.length) {
+      // pack three octets into four hextets
+      o1 = data.charCodeAt (i++);
+      o2 = data.charCodeAt (i++);
+      o3 = data.charCodeAt (i++);
+
+      if (o1 > 128 || o2 > 128 || o3 > 128) {
         throw new InvalidCharacterError ("'btoa' failed: The string to be encoded contains characters outside of the Latin1 range.");
       }
-      block = block << 8 | charCode;
+
+      bits = (o1 << 16) | (o2 << 8) | o3;
+      // use hextets to index into b64, and append result to encoded string
+      acc += chars.charAt ((bits >> 18) & 0x3F) +
+             chars.charAt ((bits >> 12) & 0x3F) +
+             chars.charAt ((bits >>  6) & 0x3F) +
+             chars.charAt ((bits)       & 0x3F);
     }
-    return output;
+
+    switch (data.length % 3) {
+      case 0: return acc;
+      case 1: return acc.slice (0, -2) + '==';
+      case 2: return acc.slice (0, -1) + '=';
+    }
   }
@@ -53,0 +59,0 @@

package.json

 {
   "name": "Base64",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "Base64 encoding and decoding",
@@ -13,6 +13,6 @@ "author": "David Chambers <[e-mail]>",
   "devDependencies": {
-    "eslint": "5.15.x",
+    "eslint": "8.34.x",
     "istanbul": "0.4.x",
     "mocha": "5.2.x",
-    "sanctuary-style": "3.0.x",
+    "sanctuary-style": "6.0.x",
     "uglify-js": "3.5.x",
@@ -19,0 +19,0 @@ "xyz": "4.0.x"

No alert changes

Improved metrics

Total package byte prevSize

15869

increased by0.67%

Lines of code

71

increased by2.9%

No dependency changes