Pure JavaScript Based Universally Unique Identifier (UUID). 

Pure JavaScript Based Universally Unique Identifier (UUID)

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    "homepage":    "http://github.com/rse/pure-uuid",

    "description": "Pure JavaScript Based Universally Unique Identifier (UUID)",

        "name":    "Dr. Ralf S. Engelschall",

        "email":   "rse@engelschall.com",

        "url":     "http://engelschall.com"

        "url":  "git://github.com/rse/pure-uuid.git"

        "url":  "http://github.com/rse/pure-uuid/issues"

        "grunt":                  "1.6.1",

        "grunt-cli":              "1.4.3",

        "grunt-contrib-jshint":   "3.2.0",

        "grunt-contrib-uglify":   "5.2.2",

        "grunt-contrib-clean":    "2.0.1",

        "grunt-eslint":           "24.3.0",

        "grunt-mocha-test":       "0.13.3",

        "eslint":                 "8.47.0",

        "eslint":                 "8.48.0",

        "eslint-config-standard": "17.1.0",

        "eslint-plugin-promise":  "6.1.1",

        "eslint-plugin-import":   "2.28.0",

        "eslint-plugin-import":   "2.28.1",

        "eslint-plugin-node":     "11.1.0",

        "chai":                   "4.3.7",

        "chai":                   "4.3.8",

        "mocha":                  "10.2.0"

        "node":                   ">=8.0.0"

        "prepublishOnly":  "grunt default",

        "build":           "grunt default",

        "test":            "grunt mochaTest"

**Pure JavaScript Based Universally Unique Identifier (UUID)**

This is a pure JavaScript and dependency-free library for the generation

of DCE 1.1, ISO/IEC 11578:1996 and IETF RFC-4122 compliant Universally

Unique Identifier (UUID). It supports DCE 1.1 variant UUIDs of version

1 (time and node based), version 3 (name based, MD5), version 4 (random

number based) and version 5 (name based, SHA-1). It can be used in both

[Node.js](http://nodejs.org/) based server and browser based client

The essential points of this implementation (in contrast to the many

others) are: First, although internally 32/64 bit unsigned integer

arithmentic and MD5/SHA-1 digest algorithmic is required, this UUID

implementation is fully self-contained and dependency-free. Second,

this implementation wraps around either `Uint8Array`, `Buffer` or

`Array` standard classes and this way tries to represent UUIDs as best

as possible in the particular environment. Third, thanks to a Universal

Module Definition (UMD) wrapper, this library works out-of-the-box in

all important JavaScript run-time environments.

UUIDs are 128 bit numbers which are intended to have a high likelihood

of uniqueness over space and time and are computationally difficult to

guess. They are globally unique identifiers which can be locally

generated without contacting a global registration authority. UUIDs are

intended as unique identifiers for both mass tagging objects with an

extremely short lifetime and to reliably identifying very persistent

According to the DCE 1.1, ISO/IEC 11578:1996 and IETF RFC-4122

standards, a DCE 1.1 variant UUID is a 128 bit number defined out of 7

fields, each field a multiple of an octet in size and stored in network

                                                    [4]

                                                   version

                                                 -->|  |<--

                                                    |  |

                                                    |  |  [16]

                [32]                      [16]      |  |time_hi

              time_low                  time_mid    | _and_version

    |<---------------------------->||<------------>||<------------>|

    | MSB                          ||              ||  |           |

    | /                            ||              ||  |           |

    |/                             ||              ||  |           |

    +------++------++------++------++------++------++------++------+~~

    |  15  ||  14  ||  13  ||  12  ||  11  ||  10  |####9  ||   8  |

    | MSO  ||      ||      ||      ||      ||      |####   ||      |

    7654321076543210765432107654321076543210765432107654321076543210

  ~~+------++------++------++------++------++------++------++------+

    ##* 7  ||   6  ||   5  ||   4  ||   3  ||   2  ||   1  ||   0  |

    ##*    ||      ||      ||      ||      ||      ||      ||  LSO |

    | |    ||      ||                                             /|

    | |    ||      ||                                            / |

    | |    ||      ||                                          LSB |

    |<---->||<---->||<-------------------------------------------->|

    |clk_seq clk_seq                      node

    |_hi_res _low                         [48]

An example of a UUID binary representation is the octet stream 0xF8

0x1D 0x4F 0xAE 0x7D 0xEC 0x11 0xD0 0xA7 0x65 0x00 0xA0 0xC9 0x1E 0x6B

standards, a DCE 1.1 variant UUID is represented as an ASCII string

consisting of 8 hexadecimal digits followed by a hyphen, then three

groups of 4 hexadecimal digits each followed by a hyphen, then 12

Permission is hereby granted, free of charge, to any person obtaining

a copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sublicense, and/or sell copies of the Software, and to

permit persons to whom the Software is furnished to do so, subject to

The above copyright notice and this permission notice shall be included

in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

		@@ -218,3 +218,3 @@

		Copyright (c) 2004-2023 Dr. Ralf S. Engelschall (http://engelschall.com/)
		Copyright © 2004-2023 Dr. Ralf S. Engelschall (http://engelschall.com/)

		@@ -221,0 +221,0 @@ Permission is hereby granted, free of charge, to any person obtaining

		@@ -70,3 +70,3 @@ /*!
		declare var UUID: UUIDConstructor;
		export default UUID;
		export = UUID;

		@@ -5,3 +5,3 @@ {
		"description": "Pure JavaScript Based Universally Unique Identifier (UUID)",
		"version": "1.7.0",
		"version": "1.8.0",
		"license": "MIT",
		@@ -33,8 +33,8 @@ "author": {
		"grunt-mocha-test": "0.13.3",
		"eslint": "8.47.0",
		"eslint": "8.48.0",
		"eslint-config-standard": "17.1.0",
		"eslint-plugin-promise": "6.1.1",
		"eslint-plugin-import": "2.28.0",
		"eslint-plugin-import": "2.28.1",
		"eslint-plugin-node": "11.1.0",
		"chai": "4.3.7",
		"chai": "4.3.8",
		"mocha": "10.2.0"
		@@ -41,0 +41,0 @@ },

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