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oxc/crates/oxc_minifier
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github-actions[bot] 2a169d1969
Release crates v0.20.0 (#4189) 
## [0.20.0] - 2024-07-11

- 5731e39 ast: [**BREAKING**] Store span details inside comment struct
(#4132) (Luca Bruno)

### Features

- 67fe75e ast, ast_codegen: Pass the `scope_id` to the `enter_scope`
event. (#4168) (rzvxa)
- 54cd04a minifier: Implement dce with var hoisting (#4160) (Boshen)
- 44a894a minifier: Implement return statement dce (#4155) (Boshen)
- 725571a napi/transformer: Add `jsx` option to force parsing with jsx
(#4133) (Boshen)

### Bug Fixes

- 48947a2 ast: Put `decorators` before everything else. (#4143) (rzvxa)
- 7a059ab cfg: Double resolution of labeled statements. (#4177) (rzvxa)
- 4a656c3 lexer: Incorrect lexing of large hex/octal/binary literals
(#4072) (DonIsaac)
- 28eeee0 parser: Fix asi error diagnostic pointing at invalid text
causing crash (#4163) (Boshen)

### Performance

- ddfa343 diagnostic: Use `Cow<'static, str>` over `String` (#4175)
(DonIsaac)
- 2203143 semantic: Store unresolved refs in a stack (#4162) (lucab)
- fca9706 semantic: Faster search for leading comments (#4140) (Boshen)

### Documentation

- bdcc298 ast: Update the note regarding the `ast_codegen` markers.
(#4149) (rzvxa)

### Refactor

- 03ad1e3 semantic: Tweak comment argument type (#4157) (lucab)

Co-authored-by: Boshen <Boshen@users.noreply.github.com>
2024-07-11 11:05:49 +08:00
..
examples chore(minifier): add dce example 2024-07-05 16:23:51 +08:00
src feat(minifier): implement dce with var hoisting (#4160) 2024-07-10 11:03:21 +00:00
tests feat(minifier): implement dce with var hoisting (#4160) 2024-07-10 11:03:21 +00:00
Cargo.toml Release crates v0.20.0 (#4189) 2024-07-11 11:05:49 +08:00
CHANGELOG.md Release crates v0.20.0 (#4189) 2024-07-11 11:05:49 +08:00
README.md

README.md

Minifier

A JavaScript minifier has three components:

  1. printer
  2. mangler
  3. compressor

Mangler

The mangler implementation is part of the SymbolTable residing in oxc_semantic. It is responsible for shortening variables. Its algorithm should be gzip friendly.

The printer is also responsible for printing out the shortened variable names.

Compressor

The compressor is responsible for rewriting statements and expressions for minimal text output. Terser is a good place to start for learning the fundamentals.

Terser Tests

The fixtures are copied from https://github.com/terser/terser/tree/master/test/compress