Mock UUID

This package is ment for testing and development purposes where a repeatable UUID is needed only. My personal reason to do it is to fill a mock state in React, and to be honest because I was bored and went a bit overboard. :-P

Goes beyond saying but don't use this in production. Use a proper UUID library.

Repo at Github: https://github.com/nkholski/mock-uuid

Install

Run npm i -D mock-uuid

Public methods

Method|Signature|Description
---|---|---
v2,v3,v4,v5|no parameters|Mimics v2,v3,v4,v5 in UUID
mockUuid.getIncrementalGenerator|(seed:number = Math.E, uuidVersion = 4, variant = 1) => () => uuid:string|Function to generate uuid with built in incrementation
mockUuid.getGenerator|(seed:number = Math.E, uuidVersion = 4, variant = 1) => (i: number) => uuid:string|Function to generate uuid with index as a parameter
mockUuid.get|(i: number, seed = Math.E, uuidVersion = 4, variant = 1) => uuid:string|Get UUID with index i

Parameters

Parameter|Valid values|Description
---|---|---
seed|any number|Uuid generation is based on the seed.
uuidVersion|2,3,4 or 5|Which version of UUID to generate (version 1 is not supported)
variant|0,1,2,3|Which variant to use

Usage example

$3

Import import { v4 as uuidv4 } from "mock-uuid" during development to be able to easilly switch Mock UUID to proper UUID in production by changing the import to import { v4 as uuidv4 } from 'uuid'. All your code should work with either. (works for v2, v3, v4 and v5)

$3

javascript

import { mockUuid } from "mock-uuid";



const books = [];

const getUuid = mockUuid.getIncrementalGenerator();

for(let i=0;i    books.push({

        id: uuid(),

        title:

book ${i+1}

,

    });

}

$3

javascript

import { mockUuid } from "mock-uuid";

 

const books:Book[] = [];

for(let i=0;i    books.push({

        id:  mockUuid.getUuid(i),

        title:

book ${i+1}

,

    });

}

books[0].id === mockUuid.getUuid(0); // <-- true





Development

The script is built in Typescript. The intructions below is only relevant if you want to poke in it. Start with

$ npm i

 to install dependencies.



* Build:

npm run build



* Test:

npm run test`

Mock UUID

Install

Run npm i -D mock-uuid

Public methods

Parameters

Usage example

$3

javascript

import { mockUuid } from "mock-uuid";



const books = [];

const getUuid = mockUuid.getIncrementalGenerator();

for(let i=0;i    books.push({

        id: uuid(),

        title:

book ${i+1}

,

    });

}

$3

javascript

import { mockUuid } from "mock-uuid";

 

const books:Book[] = [];

for(let i=0;i    books.push({

        id:  mockUuid.getUuid(i),

        title:

book ${i+1}

,

    });

}

books[0].id === mockUuid.getUuid(0); // <-- true





Development

The script is built in Typescript. The intructions below is only relevant if you want to poke in it. Start with

$ npm i

 to install dependencies.



* Build:

npm run build



* Test:

npm run test`