template literal in factoryWithTypeCheckers breaks es5 compatibility

[pfrend]

Problem:
Build issues with webpack when using older uglify-js that can't read es6 input

Version: 15.7

Code:
https://github.com/facebook/prop-types/blob/master/factoryWithTypeCheckers.js#L310

Expected:
Only es5 code exported

Example output of error:

ERROR in common.js from UglifyJs
SyntaxError: Unexpected character '`' [./~/prop-types/factoryWithTypeCheckers.js:310,0]

Note:
First issue in here - sorry if I'm missing some issue filing rules. Let me know if you need more info.
Thanks!

[ljharb]

Thanks, I’ll have a fix for this published shortly.

[ljharb]

v15.7.1 published. Sorry for the inconvenience!

[pfrend]

awesome, thanks for the quick response time, much appreciated!