server/helpers/image-utils.ts

   1 import 'multer'
   2 import * as sharp from 'sharp'
   3 import { move, remove } from 'fs-extra'
   4
   5 async function processImage (
   6   physicalFile: { path: string },
   7   destination: string,
   8   newSize: { width: number, height: number }
   9 ) {
  10   if (physicalFile.path === destination) {
  11     throw new Error('Sharp needs an input path different that the output path.')
  12   }
  13
  14   const sharpInstance = sharp(physicalFile.path)
  15   const metadata = await sharpInstance.metadata()
  16
  17   // No need to resize
  18   if (metadata.width === newSize.width && metadata.height === newSize.height) {
  19     await move(physicalFile.path, destination, { overwrite: true })
  20     return
  21   }
  22
  23   await remove(destination)
  24
  25   await sharpInstance
  26     .resize(newSize.width, newSize.height)
  27     .toFile(destination)
  28
  29   await remove(physicalFile.path)
  30 }
  31
  32 // ---------------------------------------------------------------------------
  33
  34 export {
  35   processImage
  36 }