Charsets

Charsets are a set of characters that will be used for obfuscation.

Valid Charset

A valid charset must be an object that contains key-value pairs where:

• The key is the character to be replaced. It must be a single alphabet character (a-z, A-Z).
• The value is an array of characters that will replace the key. It must be an array of any single character other than the control characters and private use characters.

Below is an example of a valid charset in JSON and JavaScript object.

• JSON

  {
    "a": ["@", "4"],
    "e": ["3"],
    "i": ["1", "!"],
    "o": ["0"],
    "s": ["5", "$"],
    "t": ["7"]
  }

• JavaScript

  {
    a: ['@', '4'],
    e: ['3'],
    i: ['1', '!'],
    o: ['0'],
    s: ['5', '$'],
    t: ['7'],
  }

See the built-in charsets for more examples.

Built-in Charsets

Below is the built-in charsets available. You can use the name of the charset as a string in the charSets option.

Charset Name	Block Name	Block Range
latin	Basic Latin	\u0000 - \u007f
latin-1	Latin-1 Supplement	\u0080 - \u00ff
latin-ext-a	Latin Extended-A	\u0100 - \u017f
latin-ext-b	Latin Extended-B	\u0180 - \u024f

See the details of each charsets in the package repository.