Could not load existing sourcemap of "node_modules/postcss/lib/map-generator.js".

Hey, I tried adding postcss/postcssJs to my code and during build it gives me this error.

I’ve implemented postcss-js this way and I use parcel-bundler to build my project.

const postcssJs = require("postcss-js");
const autoprefixer = require("autoprefixer");
const prefixer = postcssJs.sync([autoprefixer]);

        const style = prefixer({
            gridArea: X
        });

Y.style.gridArea = style

Am I doing something wrong or is it actually broken in some way?

[nikowonde]

So I mentioned in the first post that error comes up during build, but I could’ve included also that it causes build to fail so I can’t run it while having postcss(-js) activated.

Edit: Kind of a workaround for that problem was to change that line this.css += eol + "/*# sourceMappingURL=" + content + "*/";

into a template-literal: this.css += ${eol}/# sourceMappingURL=${content}/;

But then it doesn’t work in IE 11.

[ai]

Seems like it is Parcel issue https://github.com/parcel-bundler/parcel/pull/2427