Guix

es5-shim.js patches a JavaScript context to contain all ECMAScript 5 methods that can be faithfully emulated with a legacy JavaScript engine. es5-sham.js patches other ES5 methods as closely as possible. Many of these shams are intended only to allow code to be written to ES5 without causing run-time errors in older engines. In many cases, this means that these shams cause many ES5 methods to silently fail.