…tack` (#5942)

Use `SparseStack` (introduced in #5940) to store the stack of blocks which may need a `var _temp;` statement added to them. This reduces the memory required for the stack, on assumption that most blocks won't need a `var` statement.

#5959)

Use `SparseStack` (introduced in #5940) to store the stack of blocks which may need a `var _temp;` statement added to them. This reduces the memory required for the stack, on assumption that most blocks won't need a `var` statement.

…tack` (#5960)

Use `SparseStack` (introduced in #5940) to store the stack of blocks which may need a `var _temp;` statement added to them. This reduces the memory required for the stack, on assumption that most blocks won't need a `var` statement.

Optimize `SparseStack` (which was introduced in #5940). Initialize it with a single entry, and ensure the stack is never emptied. This makes `take`, `get_or_init` and `get_mut_or_init` methods infallible, since there is always an entry on the stack to read.

## [0.30.1] - 2024-09-24

### Features

- 5c323a2 minifier: Loop compressor passes (#6013) (Boshen)

### Bug Fixes

- 9ca202a codegen: Preserve newlines between comments (#6014) (Boshen)
- 4a99372 codegen: Print jsdoc comments for `TSEnumMember`s (#6007)
(camc314)
- 97a2c41 isolated-declarations: False positive for class private getter
with non-inferrable return type (#5987) (michaelm)

### Performance

- 2b17003 linter, prettier, diagnostics: Use `FxHashMap` instead of
`std::collections::HashMap` (#5993) (camchenry)
- 7b90d79 transformer: `SparseStack` always keep minimum 1 entry (#5962)
(overlookmotel)
- 28fe80a transformer: Logical assignment operator transform use
`SparseStack` (#5960) (overlookmotel)
- 9f7d4b7 transformer: Exponentiation operator transform use
`SparseStack` (#5959) (overlookmotel)
- 5dc0154 transformer: Nullish coalescing operator transform use
`SparseStack` (#5942) (overlookmotel)
- 618e89e transformer: Arrow function transform: reduce stack memory
usage (#5940) (overlookmotel)

### Documentation

- 5a0d17c ast: Document more AST nodes (#6000) (DonIsaac)
- 18371dd oxc: Include feature-guarded modules in docs.rs (#6012)
(DonIsaac)
- 1abfe8f semantic: Document `SymbolTable` (#5998) (DonIsaac)
- f5eee72 semantic: Correct docs for `Reference` (#5992) (overlookmotel)
- 860f108 transformer: Add to arrow functions transform docs (#5989)
(overlookmotel)

### Refactor

- 0a2f687 minifier: Move dce conditional expression to `RemoveDeadCode`
(#5971) (Boshen)
- f02bf51 transformer: Arrow function transform: remove unnecessary
assertion (#6002) (overlookmotel)

---------

Co-authored-by: Boshen <[email protected]>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>