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`
