This is a BBEdit text filter for transforming abc music notation into a block of SVG that renders standard music engraving so that BBEdit may display a preview. To use it you have to have nodejs present on your system, and you have to install Daniel Narey's scoped ES module abc-render-svg like this: npm install @folkdb/abc-render-svg. That module, in turn relies on Paul Rosen's abcjs module, and the jsdom module. Everything you need is in @folkdb/abc-render-svg.

This ES module will not support require() so the node script needs the file extension .mjs in order to import the module. That .mjs file needs to live at ~/Library/Application Support/BBEdit/Text Filters/abcjs_preview.mjs. Use it by selecting some ABC text, and invoking the abcjs_preview Text Filter. The selected text will be replaced by an SVG element which BBEdit can preview.