This will fold expressions like `new Object()` to `{}`, and `new Array()` to `[]`. Based on the closure compiler tests: b7e380b632/test/com/google/javascript/jscomp/PeepholeSubstituteAlternateSyntaxTest.java (L78).
This is outside my usual area, so feedback is welcome.
NOTE: this was previously a full stack of PRs, but Graphite decided to stop working completely for some reason and only gave me this error when I submitted a PR:
```
ERROR: Failed to submit PR for 10-02-feat_minifier_fold_single_arg_new_array_expressions:
{}
```
so I decided to just completely remake this stack and submit as 1 PR.
I expect small performance regression.
But managed to improve the following case from react.developmement.js
```
oxc main ❯ diff before.js after.js
670c670
< if (!(dispatcher !== null)) throw Error("Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem.");
---
> if (dispatcher === null) throw Error("Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem.");
```
This PR introduces two type alias to avoid the confusing const generic `pub struct Codegen<'a, const MINIFY: bool>`
* CodeGenerator - Code generator without whitespace removal.
* WhitespaceRemover - Code generator with whitespace removal.
Usage is changed to a builder pattern:
```rust
CodeGenerator::new()
.enable_comment(...)
.enable_sourcemap(...)
.build(&program);
```
- Adds option to `CodegenOptions` - `enable_typescript` to enable output
of TS.
- Stops skipping output that is TS when `enable_typescript` is enabled
- Adds TS support to
- Function
- FormalParameter
- BindingPattern
- Adds basic tests for TS generation
---------
Co-authored-by: Boshen <boshenc@gmail.com>
The runtime performance gains does not out weight the compilation speed from
building the custom allocators, which takes about a minute to build on
slower machines.
Fold constant addition expressions. Handles string concatenation and
addition, both with implicit casting.
For example,
```ts
let x = 1 + 1
let y = "hello " + "world"
```
now becomes
```ts
let x = 2
let y = "hello world"
```
## Extra Goodies
- test(minifier): add `test_snapshot` helper to perform snapshot tests
with `insta`
- up(hir): implement `std::ops::Add` for `NumericValue`
- up(span): impl `TryFrom<Cow<'_, &str>>` for `Atom`
