1.0.0 • Published 6 years ago
vsize v1.0.0
vsize
Counts the elements in an Array, Map, Object, Set, or other collection.
Installation
Requires Node.js 6.0.0 or above.
npm i vsize
API
The module exports a single function.
Parameters
- Bindable:
collection
(Array, iterable, Map, Object, Set, string, or Typed Array): The collection whose elements you want to count. - Optional: Object argument:
arrays
/maps
/sets
(arrays of classes/strings): Arrays of classes and/or string names of classes that should be treated as equivalent toArray
/Map
/Set
(respectively).ducktype
(boolean): Whether or not to support unrecognized collection types that have asize
orlength
property. Defaults tofalse
.inObj
(boolean): Whether or not to include inherited properties ifcollection
is an Object (i.e. not another recognized type). Defaults tofalse
.reflectObj
(boolean): Whether or not to use reflection to include non-enumerable Object properties. Only takes effect ifcollection
is an Object (i.e. not another recognized type). Defaults tofalse
.
Return Value
The number of items in the collection.
Example
const size = require('vsize')
size([]) // 0
size({a: 1, b: 2}) // 2
size('test') // 4
size(new Map([['key', 'value']])) // 1
Related
The “k” family of modules works on keyed/indexed collections.
The “v” family of modules works on any collection of values.
1.0.0
6 years ago