Currently get-anonymous-intrinsics.js, uses direct syntax to grab some anonymous intrinsics. This is susceptible to transpilers which rewrite the SES shim's code to replace those syntax that didn't exists in previous JavaScript versions. If the actual target in which the transpiled code runs actually has those intrinsics implemented, the SES shim won't grab and harden them.

While there is no way to protect against a malicious transpiler, we should detect and error early in the presence of transpilers that were mistakenly applied to the SES shim. One way to do this is to also eval the syntax used to reach the intrinsic and compare the 2 values.