build-number-generator

build-number-generator

Generates a build number to be appended to your product version number, which is unique for each build and which can be read "by a human" to learn about the build time. No need for maintaining the most recent build number in your sources, incrementing it during the build and committing & pushing the new one to your sources.

Features

The generated build number has the following features:

• The date and time of the build can be read "by a human" from looking at the build number. (Uses BCD notation for a year-month-day time stamp: YYMMDDCCC. "CCC" is the count of 2-minute intervals after midnight.)
• A new unique number can be generated every two minutes. (Enough for usual CI/CD builds running on a central build server after every push to the source code repository.)
• The build number has fixed number of digits. (Contains always nine digits for easier column formatting of version numbers.)
• The build number is an integer. (Can be parsed to a 32-bit integer, if it needs to be processed as a number elsewhere.)

This module offers the following functionality:

• Command-line tool to generate, validate and parse the build numbers. (Can be integrated to any build script.)
• Functional module for programmatic usage with the same functionality. (Can be integrated to JavaScript build scripts like Grunt or Gulp.)

Example

Full version:     1.0.3.180625392

Product version:  1.0.3
Build number:     180625392 (read: 18-06-25, 392*2 minutes after midnight)
Built at:         25 June 2018 1:04 PM

Product version marks the particular version of your product for identification and compatibility-checking purposes. The format of the version number is not fixed. [Node.js] modules usually comply with the semver standard.

Build number is an additional stamp to be appended to the e product version to identify, when your product package was built.

Command-line usage

Make sure that you have Node >= 6 installed. Install the build-number-generator package globally to be able to generate and parse build numbers by running buildnumgen from any directory in PATH:

$ npm i -g build-number-generator

$ buildnumgen
180625392

$ buildnumgen 1.0.3
1.0.3.180625392

$ buildnumgen 180625392
Mon Jun 25 2018 13:04

$ buildnumgen 1.0.3.180625392
Mon Jun 25 2018 13:04

Running buildnumgen --help prints usage instructions:

$ buildnumgen -h

  Usage: buildnumgen [options] [build_number|product_version]

  Options:

    -V, --version                output the version number
    -s, --separator <separator>  separates product version from build number
    -v, --validate               only validates a build number
    -h, --help                   output usage information

  Prints a new build number if called without arguments. If called with a
  previously generated build number, it will print the time, when it was
  generated. If called with a semver number, it will append the build number
  to it and print the result. The default build number separator is dot (.).
  When validating a build number, the process exists with zero if the input
  is valid, otherwise it exists with a non-zero.

Programmatic usage

Make sure that you use Node >= 6. Install the build-number-generator package locally as a development dependency to be able to generate and parse build numbers from JavaScript:

npm i -D build-number-generator

The main module exports four functions to generate build numbers, validate them, parse them to Date instances and format them to shortened readable Date strings.

const { generate, validate, parse, format } = require('build-number-generator')

// Returns '180625392'
const buildNumber = generate()
// Returns '1.0.3.180625392'
const buildNumber = generate('1.0.3')
// Returns '1.0.3.180625392'
const buildNumber = generate({ version: '1.0.3' })
// Returns '2018/06-180625392'
const buildNumber = generate({ version: '2018/06', versionSeparator: '-' })

// Returns true
const valid = validate('180625392')
// Returns true
const valid = validate('1.0.3.180625392')
// Returns false
const valid = validate('1.0.3')

// Returns Date instance with Jun 25 2018 13:04
const time = parse('180625392')
// Returns Date instance with Jun 25 2018 13:04
const time = parse('1.0.3.180625392')
// Throws an error
const time = parse('1.0.3')

// Returns 'Mon Jun 25 2018 13:04'
const buildTime = format('180625392')
// Returns 'Mon Jun 25 2018 13:04'
const buildTime = format('1.0.3.180625392')

Contributing

In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using npm test.

Release History

• 2018-07-07 v0.0.1 Initial release

License

Copyright (c) 2018-2019 Ferdinand Prantl

Licensed under the MIT license.

Changelog

0.0.4

Upgrade module dependencies