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)
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 75Very 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 --save tiered-map - Import:
import * as pkg from ('tiered-map') - Require:
const pkg = require('tiered-map')
<script type="module">
import * as pkg from '//dev.jspm.io/tiered-map@2.13.0'
</script>This package is published with the following editions:
tiered-mapaliasestiered-map/source/index.jstiered-map/source/index.jsis ESNext source code for Node.js 10 || 12 || 13 || 14 with Require for modulestiered-map/edition-browsers/index.jsis ESNext compiled for web browsers with Require for modules
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Unless stated otherwise all works are:
- Copyright © 2015+ Bevry Pty Ltd
and licensed under: