[Fix] ensure that IE 11 in compatibility mode doesn't throw.
[Fix] ensure that IE 11 in compatibility mode doesn't throw.

Fixes #370.
ljharb/es5-shim,ljharb/es5-shim,Xotic750/es5-shim,Xotic750/es5-shim,es-shims/es5-shim,es-shims/es5-shim