Dither not working

[1Euro7Cent]

Expected Behavior

this image

to something like this

Current Behavior

this image

to this image

there is just nothing happening

Failure Information (for bugs)

the image is not being dithered

Steps to Reproduce

my code snippet:

Jimp.read('./server/images/example.png', async function (err, image) {
            
            async function dithering() {
                console.log('dithering', file)

                image.dither565()
                image.write(`./server/images/dithered_image.png`)


                file = `./server/images/dithered_image.png`
            } 
     //...
     //...

1. step 1: dither the image
2. step 2: see the result

Context

• Jimp Version: 0.16.1
• Operating System: Windows 10 64 bit
• Node version: v14.16.0

Failure Logs

no errors / logs

[hipstersmoothie]

Maybe we can look into a 3rd party lib devoted to dithering