Running Holder.js triggers warning in Firefox:

[TheRealCuran]

When using Holder.js (2.9.3) in my project, I get

mutating the [[Prototype]] of an object will cause your code to run very slowly; instead create the object with the correct initial [[Prototype]] value using Object.create

in holder.js on line 2049:
Buffer.prototype.__proto__ = Uint8Array.prototype

This seems code you imported from somewhere else ("The buffer module from node.js, for the browser."). Maybe there is a fixed upstream version?

[imsky]

will take a look, thanks for reporting