Compile time exponentially longer as more exclamation marks are added to a negation in a template placeholder expression

[eriklumme]

TypeScript Version: 3.9.5

Search Terms: exponential, exclamation, negation

Code

let a = `${!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!true}`

Expected behavior:

The compile time does not exponentially increase as more exclamation marks are added.

Actual behavior:

The compile time increases exponentially with more exclamation marks.

Playground Link:

https://www.typescriptlang.org/play/#code/DYUwLgBAhhC8EAMAkBvAhBzXs7QMymAGcQBfBAbgFgAoQkAJzAAooBKamoA

It will always say that the code ran immediately, but after changing the code, the result will be incorrect for some time. In addition, you will notice as you add more exclamation marks that it takes a long time for whatever you write on the left side to appear on the right.

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