server/helpers/image-utils.ts

   1 import 'multer'
   2 import * as sharp from 'sharp'
   3 import { readFile, remove } from 'fs-extra'
   4 import { logger } from './logger'
   5
   6 async function processImage (
   7   path: string,
   8   destination: string,
   9   newSize: { width: number, height: number },
  10   keepOriginal = false
  11 ) {
  12   if (path === destination) {
  13     throw new Error('Sharp needs an input path different that the output path.')
  14   }
  15
  16   logger.debug('Processing image %s to %s.', path, destination)
  17
  18   // Avoid sharp cache
  19   const buf = await readFile(path)
  20   const sharpInstance = sharp(buf)
  21
  22   await remove(destination)
  23
  24   await sharpInstance
  25     .resize(newSize.width, newSize.height)
  26     .toFile(destination)
  27
  28   if (keepOriginal !== true) await remove(path)
  29 }
  30
  31 // ---------------------------------------------------------------------------
  32
  33 export {
  34   processImage
  35 }