mem-size

Calculates Approximate memory size of a javascript variable.

Installation

$ npm i mem-size

Usage

• require('mem-size')(variable, pretty)

  • Gets the approximate size of the given variable in bytes.
  • pretty: if sets to true, returns the size in pretty format (e.g., 12.345 KB).

• Supported Types

  • Boolean
  • Number
  • String
  • Object
  • Array

Example

var memSize = require('mem-size');
 
var testNumber = 123456789;
 
memSize(testNumber); // 8
 
memSize(testNumber, true); // '8 bytes'
 
var testObject = {
  aBoolean: true,
  aString: 'The Quick Brown Fox Jumps Over The Lazy Dog',
  aNumber: 123456789
};
 
memSize(testObject); // 142
 
memSize(testObject, true); // '142 +-24 bytes'

Note : In the above example, the +- value is depends on v8 Garbage Collector.

Roadmap

• Support for Buffers
• Support for Functions
• Support for Int8Array, Int16Array, Int32Array

License

MIT