message: fix this.createBuilder
diff: @@ -152,7 +152,7 @@ export const encodeBlock = (input, inputOffset, output, outputOffset) => {
  };
  export const Char_To_Decoded_Char_Map = () => {
  - const builder = this.createBuilder();
  + const builder = createBuilder();
  builder.addRange('A', 'Z', 0);
  builder.addRange('2', '7', 26);
  return builder.map;
  