Fix nanoid error

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.5.2] - 2024-09-20
+### Changed
+- Fixed nanoid of differing length error
+
 ## [1.5.1] - 2024-09-20
 ### Changed
 - Use after commit on create instead of after create

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    lite-uxid (1.5.1)
+    lite-uxid (1.5.2)
 
 GEM
   remote: https://rubygems.org/

lib/lite/uxid/base/irreversible.rb

@@ -44,10 +44,6 @@ def coder_value_for(key)
           opts.delete(key) || Lite::Uxid.configuration.send(sym_key)
         end
 
-        def coder_bytes
-          @coder_bytes ||= SecureRandom.random_bytes(coder_size).bytes
-        end
-
         def coder_charset
           @coder_charset ||= coder_value_for(:charset)
         end

lib/lite/uxid/nanoid.rb

@@ -5,13 +5,38 @@ module Uxid
     class Nanoid < Base::Irreversible
 
       def encode
-        uxid = (0...coder_size).each_with_object(+"") do |i, str|
-          str << coder_charset[coder_bytes[i] & 63]
+        uxid = +""
+
+        loop do
+          cached_bytes = bytes
+
+          (0...step).each do |idx|
+            byte = cached_bytes[idx] & mask
+            char = byte && coder_charset[byte]
+            next unless char
+
+            uxid << char
+            return uxid if uxid.size == coder_size
+          end
         end
 
         "#{coder_prefix}#{uxid}"
       end
 
+      private
+
+      def bytes
+        SecureRandom.random_bytes(coder_size).bytes
+      end
+
+      def mask
+        @mask ||= (2 << (Math.log(coder_length - 1) / Math.log(2))) - 1
+      end
+
+      def step
+        @step = (1.6 * mask * coder_size / coder_length).ceil
+      end
+
     end
   end
 end

lib/lite/uxid/version.rb

@@ -3,7 +3,7 @@
 module Lite
   module Uxid
 
-    VERSION = "1.5.1"
+    VERSION = "1.5.2"
 
   end
 end