git clone https://github.com/beautify-web/js-beautify.git
Copy js/lib/beautify.js
to devtools/shared/jsbeautify/src/beautify-js.js
Remove the acorn section from the file and add the following to the top:
const acorn = require("acorn/acorn");
function Beautifier(js_source_text, options) {
add: exports.jsBeautify = js_beautify;
Copy beautify-html.js
to devtools/shared/jsbeautify/src/beautify-html.js
Replace the require blocks at the bottom of the file with:
var beautify = require('devtools/shared/jsbeautify/beautify');
exports.htmlBeautify = function(html_source, options) {
return style_html(html_source, options, beautify.js, beautify.css);
};
Copy beautify-css.js
to devtools/shared/jsbeautify/src/beautify-css.js
Replace the global define block at the bottom of the file with:
exports.cssBeautify = css_beautify;
Copy js/test/beautify-tests.js
to devtools/shared/jsbeautify/src/beautify-tests.js