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Dither.js

A copy-paste of some code from Surma’s dither demo (see blog post for info) to turn it into its own JS library.

import {atkinson, floydSteinberg} from "https://deno.land/x/dither_js@v0.0.3/mod.js"; // see mod.js for the names of the dithering algorithms that are exported
let ditheredImageData = await atkinson(imageData);

or:

let dither = await import("https://deno.land/x/dither_js@v0.0.3/mod.js");
let ditheredImageData = await dither.atkinson(imageData);