Generate GUID

𝔸𝕝𝕘𝕖𝕣

Generate GUID

/*
Generates a UUID/GUID in Node.Js.
The script uses `Math.random` in combination with the timestamp for better randomness.
The function generate an RFC4122 (https://www.ietf.org/rfc/rfc4122.txt) version 4 UUID/GUID
*/

export const Guid = () => {
  const pattern = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
  let currentDateMilliseconds = new Date().getTime()
  return pattern.replace(/[xy]/g, currentChar => {
    const randomChar = (currentDateMilliseconds + Math.random() * 16) % 16 | 0
    currentDateMilliseconds = Math.floor(currentDateMilliseconds / 16)
    return (currentChar === 'x' ? randomChar : (randomChar & 0x7 | 0x8)).toString(16)
  })
}

// > Guid()
// 'edc848db-3478-1760-8b55-7986003d895f'

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We are a group of programmers helping each other build new things, whether it be writing complex encryption programs, or simple ciphers. Our goal is to work together to document and model beautiful, helpful and interesting algorithms using code. We are an open-source community - anyone can contribute. We check each other's work, communicate and collaborate to solve problems. We strive to be welcoming, respectful, yet make sure that our code follows the latest programming guidelines.