Tiered Map

A simple map of key value pairs with support for tiers (e.g. defaults go at tier 25, standards go at 50, and overrides go at tier 75)

Usage

var TieredMap = require('tiered-map')
 
var m = new TieredMap({
    tiers: {
        'high': 75
    }
    onChangeListener: function(key, newValue, oldValue){
        console.log('The key', key, 'changed from', oldValue, 'to', newValue)
    }
})
 
m.set('name', 'ben')  // name defaults to ben (default level is 50)
m.set('name', 'bob', 25)  // name will stay bob
m.set('name', null)  // name will become bob
m.set('name', 'john', 'high')  // name will become john
 
console.log(m.get('name', 75))  // will output john
console.log(m.get('name'))  // will output nothing
console.log(m.get('name', 25))  // will output bob
 
console.log(m.getTier('high'))  // will output 75

Very useful for having multiple tiers of data attributes with different priorities. For example, you could have default values at tier 25, adjusted values at tier 50, and override values at tier 75.

Install

npm

• Install: npm install --save tiered-map
• Import: import * as pkg from ('tiered-map')
• Require: const pkg = require('tiered-map')

jspm

<script type="module">
    import * as pkg from '//dev.jspm.io/tiered-map@2.13.0'
</script> 

Editions

This package is published with the following editions:

• tiered-map aliases tiered-map/source/index.js
• tiered-map/source/index.js is ESNext source code for Node.js 10 || 12 || 13 || 14 with Require for modules
• tiered-map/edition-browsers/index.js is ESNext compiled for web browsers with Require for modules

History

Discover the release history by heading on over to the HISTORY.md file.

Contribute

Discover how you can contribute by heading on over to the CONTRIBUTING.md file.

Backers

Maintainers

These amazing people are maintaining this project:

• Benjamin Lupton — view contributions

Sponsors

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Contributors

These amazing people have contributed code to this project:

• Benjamin Lupton — view contributions

Discover how you can contribute by heading on over to the CONTRIBUTING.md file.

License

Unless stated otherwise all works are:

• Copyright © 2015+ Bevry Pty Ltd

and licensed under:

• MIT License