smart-guid

Small and smart GUID / UUID generator.

Note that by design JavaScript can not generate full 128-bit GUIDs.

Installation

npm install smart-guid --save

Usage

Require:

    var SUID = require('smart-guid');

Args:

By default SUID() returns GUID in pattern xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx for e.g.: 87B793D7-EDE3-4B2C-9CBE-72A436E08E1B

• SUID( pattern )

  • pattern string specifies the pattern in which all lowercase x and y will be replaced by generated char.
  • All - will be treated as delimiters, and returned intacted.
  • y chars are a result of x & 0x3 | 0x8 bitwise operation.

• SUID( pattern, base )

  • baseint in range: 2-36 specifies the string.base.
  • base = 2 will return binary format ( half byte )

• SUID( pattern, base, fullByte )

  • fullByte boolean have effect only in binary mode base = 2 and returns full byte numbers ( 8 digits ).

• Default

  • pattern : xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
  • base : 16
  • fullByte : false

Example:

  var GUID = SUID(),                    // GUID = 87B793D7-EDE3-4B2C-9CBE-72A436E08E1B
      UUID = SUID('xxx-5xx-Kyy'),       // UUID = 369-57D-K98

      bUID = SUID('x-x-y-b', 2);        // BINARY = 0101-0100-1011-b
      BUID = SUID('x-x-y-B', 2, true);  // BINARY_FULLBYTE = 01100011-01110000-10000011-B
      OUID = SUID('x-x-y-O', 8);        // OCTAL = 2-7-11-O
      HUID = SUID('x-x-y-H', 16);       // HEX = 0-2-A-H

Tests

npm test

Release History

• 0.1.0 Initial release