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josephsavona
49d9f3fc49
New take on #29716
## Summary
Template literals consisting entirely of constant values will be inlined
to a string literal, effectively replacing the backticks with a double
quote.
This is done primarily to make the resulting instruction a string
literal, so it can be processed further in constant propatation. So this
is now correctly simplified to `true`:
```js
`` === "" // now true
`a${1}` === "a1" // now true
```
If a template string literal can only partially be comptime-evaluated,
it is not that useful for dead code elimination or further constant
folding steps and thus, is left as-is in that case. Same is true if the
literal contains an array, object, symbol or function.
## How did you test this change?
See added tests.
DiffTrain build for [ac06829246](https://github.com/facebook/react/commit/ac06829246287751e6b74bd99cd1b39d1aeba06a)