Share your code. npm Orgs help your team discover, share, and reuse code. Create a free org »

    mcfly-timezonepublic

                         __---~~~~--__                      __--~~~~---__
                        `\---~~~~~~~~\\                    //~~~~~~~~---/'
                          \/~~~~~~~~~\||                  ||/~~~~~~~~~\/
                                      `\\                //'
                                        `\\            //'
                                          ||          ||      Hey Doc!
                                ______--~~~~~~~~~~~~~~~~~~--______
                           ___ // _-~                        ~-_ \\ ___
                          `\__)\/~                              ~\/(__/'
                           _--`-___                            ___-'--_
                         /~     `\ ~~~~~~~~------------~~~~~~~~ /'     ~\
                        /|        `\         ________         /'        |\
                       | `\   ______`\_      \------/      _/'______   /' |
                       |   `\_~-_____\ ~-________________-~ /_____-~_/'   |
                       `.     ~-__________________________________-~     .'
                        `.      [_______/------|~~|------\_______]      .'
                         `\--___((____)(________\/________)(____))___--/'
                          |>>>>>>||                            ||<<<<<<|
                          `\<<<<</'                            `\>>>>>/'
    

    McFly

    Build Status Coverage Status

    Purpose and Intent

    McFly provides a convenient mechanism to modernise obsolete or deprecated Olson/IANA timezone strings into their modern equivalent timezone string.

    Example: Asia/Saigon -> Asia/Ho_Chi_Minh

    Installation

    Install via NPM

    npm install mcfly-timezone
    

    Conversions

    McFly, by default, utilises the 'backward' database, part of the larger IANA Timezone Database which is available under a Public Domain license. This will convert all deprecated timezone strings which have at any time formed a part of the IANA or Olson Timezone Databases to their modern equivalent.

    Included 'Backward' Version: 2017b

    McFly is designed to ingest 'link' files provided by IANA as part of their Timezone Database which are used to alias one timezone string to another timezone string. You can provide other link files from the IANA data files using the custom configuration options below.

    Usage

    Require the McFly module and call the convert method passing in the oldTimezoneString, a set of options (optional) and a callback to be called on completion. If the given timezone string has a valid conversion it will be converted to the new format, if not the original string will be returned.

    Arguments

    • oldTimezoneString - A timezone string to be converted
    • options - A set of options to configure the conversion of timezone strings (optional). See below for the available options. If not given the default options will be used.
    • callback - A callback which is called when the conversion is complete

    Options

    • conversions - A file or directory path to the IANA TZ DB Link file/files OR an object where keys are deprecated timezone strings where the value corresponds to their linked target string. Default: "<module path>/conversions"
    • ignore - A regular expression defining any old timezone strings which should be ignored for conversion. Default: null

    Example

    Using default options

    mcFly.convert("Asia/Saigon", function(error, result){
        \\ Output Asia/Ho_Chi_Minh
        console.log(result);
    })
    

    Using custom options

    options = {
        conversions: {
            'Europe/Belfast': 'Europe/London',
            'GB': 'Europe/London',
            'GB-Eire': 'Europe/London'
        },
        ignore: /\//
    }
    
    mcFly.convert("Europe/Belfast", options, function(error, result){
        \\ Output Europe/Belfast
        console.log(result);
    })
    
    mcFly.convert("GB", options, function(error, result){
        \\ Output Europe/London
        console.log(result);
    })
    

    Limitations

    • McFly only converts timezone strings known to conform to a given format which have a valid current equivalent. The IANA Timezone Database maintains a list of known historical, obsolete and obscure Timezones which are not covered by the database. Timezone representations which have never formed part of the IANA or Olson databases are also unsupported.

    Caveats

    • When using conversions loaded from a file these are cached in-memory for the lifetime of the module's life in memory. This means changes to the state of conversions of the filesystem may not be updated unless the module is re-imported or the _conversionCache property on the module root is cleared.

    install

    npm i mcfly-timezone

    Downloadslast 7 days

    12

    version

    1.1.1

    license

    Apache-2.0

    repository

    github.com

    last publish

    collaborators

    • avatar
    • avatar