Minify global objects
Author: keganlanceCreated Jul 19, 2022Updated Jul 19, 2022
Currently UglifyJS doesn't make the the code shorter by replacing globals with a variable reference. I wonder why this is the case.
Take something like:
(function () {
let button = document.createElement('button');
let span = document.createElement('span');
span.textContent = 'something';
button.appendChild(span);
document.body.appendChild(button);
})();This could easily be minified more when replacing the document references with a variable:
(function (document_) {
let button = document_.createElement('button');
let span = document_.createElement('span');
span.textContent = 'something';
button.appendChild(span);
document_.body.appendChild(button);
})(document);It could apply to more globals like window, navigator, and others. Is there a reason this is not included in minifiers?
Source: mishoo/UglifyJS