UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Steps to reproduce the problem:
1. Go to https://weak-mammal.glitch.me/
2. On source tab, open /dist/index.mjs
3. See function "createWorker" (Line 191)
4. Look the original file on Network tab (Line 192)

What is the expected behavior?
The line 192 should exist on the Source tab.

What went wrong?
The Source tab is considering the // sourcemap inside the template string as a source map, but it is a template code that will generate a worker with the source map.

Code from Source tab: https://monosnap.com/file/HDk2dCHigKnHj8HXoY8ieSb6y6p7LR

Code from Network tab: https://monosnap.com/file/6fKxAH6fAQOUVIvAmq86ZolF5MlyRO

The original code can be found here on the Worker-dom project from Amp: https://github.com/ampproject/worker-dom/blob/master/src/main-thread/worker.ts

Did this work before? N/A 

Chrome version: 68.0.3440.106  Channel: stable
OS Version: OS X 10.12.6
Flash Version: