JarCastingcalculate-size 
Calculate the pixel size (width/height) of a string (with integrated caching)
Install
This package supports Typescript out-of-the-box
$ npm install calculate-size
Usage
const size = calculateSize('Hello world!', {
font: 'Arial',
fontSize: '12px'
})
### Options
* `font: string`
* `fontSize: string`
* `fontWeight: string`
* `lineHeight: string`
* `width: string` (Constraint width by a fixed value to calc height)
console.log(size.width) // 140
console.log(size.height) // 20