@premix/blob

This package is a kind of converter between Blob/File and base64 URL.

Installation

``bash
npm i @premix/blob
`

Basic usage

`ts
import { base64ToBlob, blobToBase64, downloadBlob } from '@premix/blob'

const base64String = 'data:image/png;base64,xxxx'
const blob = base64ToBlob(base64String)
const base64 = blobToBase64(blob)
console.log(base64String === base64) // true

// download blob object to local file system
downloadBlob(blob)
`

Advanced usage

- Download the Excel Blob object

`ts
import axios from 'axios'
import { downloadBlob } from '@premix/blob'

function downloadExcel(
url: string,
payload: Record,
filename: string
) {
return axios
.post(url, payload, {
responseType: 'blob'
})
.then(res => {
const blob = new Blob([res], {
type:
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8'
})
// make Blob object downloadable
downloadBlob(blob)
})
}
`

- Convert any HTTP(S) URL to base64 or Blob

`ts
import axios from 'axios'
import { blobToBase64 } from '@premix/blob'

function urlToBas64(url: string, payload: Record) {
return axios
.get(url, { params: payload }, { responseType: 'blob' })
.then(res => blobToBase64(res))
}
``

License

MIT © Bowen Liu