pakastin / lookup

create lookup tables easily

lookup

create lookup tables easily

install

npm install @pakastin/lookup

• production (UMD): https://pakastin.github.io/lookup/lookup.min.js
• ES2015 module: https://pakastin.github.io/lookup/lookup.es.js
• development (UMD): https://pakastin.github.io/lookup/lookup.js

lookup(items, key, [reverse])

• items(Array): items to iterate
• key(String): which key value to use for lookup
• reverse(Boolean): is there multiple items / key value?

usage (ES2015 module)

import lookup from '@pakastin/lookup';

const users = [ { _id: 1, level: 1, name: 'A' }, { _id: 2, level: 1, name: 'B' }, { _id: 3, name: 'C' } ];

const userLookup = lookup(users, '_id');
const userLevelLookup = lookup(users, 'level', true); // reverse lookup

console.log(userLookup[1]) // --> { _id: 1, name: 'A' }
console.log(userLevelLookup[1]) // --> [ {_id: 1, level: 1, name: 'A' }, { _id: 2, level: 1, name: 'B' } ]

with commonjs:

const lookup = require('@pakastin/lookup');
...

oldskool:

<script src="https://pakastin.github.io/lookup/lookup.min.js"></script>
<script>
...
const userLookup = lookup(users, '_id');
...
</script>