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oxc/crates/oxc_minifier
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github-actions[bot] 224f5ef2cc
Release crates v0.17.0 (#4059) 
## [0.17.0] - 2024-07-05

- e32b4bc ast: [**BREAKING**] Store trivia comments in a sorted slice
(#4045) (Luca Bruno)

- 1df6ac0 ast: [**BREAKING**] Rename `visit_enum_memeber` to
`visit_ts_enum_member`. (#4000) (rzvxa)

- 4a0eaa0 ast: [**BREAKING**] Rename `visit_enum` to
`visit_ts_enum_declaration`. (#3998) (rzvxa)

- c98d8aa ast: [**BREAKING**] Rename `visit_arrow_expression` to
`visit_arrow_function_expression`. (#3995) (rzvxa)

### Features

- 1854a52 ast_codegen: Introduce the `#[span]` hint. (#4012) (rzvxa)
- 7538af1 ast_codegen: Add visit generator (#3954) (rzvxa)
- 7768d23 isolated-declarations: Support optional class methods (#4035)
(Egor Blinov)
- 0da9dfb minifier: Add constant folding to remove dead code (#4058)
(Boshen)

### Bug Fixes

- aaac2d8 codegen: Preserve parentheses from AST instead calculating
from operator precedence (#4055) (Boshen)
- 5e5b1b1 codegen: Correct accessibility emit for class
formal-parameters/methods/properties (#4042) (Egor Blinov)
- 7844734 codegen: Missing const keyword in TSTypeParamter (#4022)
(Dunqing)
- 6254a41 codegen: Missing TypeParamters in TSCallSignature (#4021)
(Dunqing)
- 3d29e9c isolated-declarations: Eliminate imports incorrectly when they
are used in `TSInferType` (#4043) (Dunqing)
- 02ea19a isolated-declarations: Should emit `export {}` when only
having `ImportDeclaration` (#4026) (Dunqing)
- 7c915f4 isolated-declarations: Binding elements with export should
report an error (#4025) (Dunqing)
- 05a047c isolated-declarations: Method following an abstract method
gets dropped (#4024) (Dunqing)
- c043bec isolated_declarations: Add mapped-type constraint to the scope
(#4037) (Egor Blinov)
- b007553 isolated_declarations: Fix readonly specifier on class
constructor params (#4030) (Egor Blinov)
- da62839 isolated_declarations: Inferring literal types for readonly
class fileds (#4027) (Egor Blinov)

### Refactor

- b51f75b ast_codegen: No longer outputs discard variable for empty
visitors. (#4008) (rzvxa)
- edb557c minifier: Add a folder struct for constant folding (#4057)
(Boshen)
- 243c9f3 parser: Use function instead of trait to parse list with rest
element (#4028) (Boshen)
- 1dacb1f parser: Use function instead of trait to parse delimited lists
(#4014) (Boshen)

Co-authored-by: Boshen <Boshen@users.noreply.github.com>
2024-07-05 15:46:50 +08:00
..
examples chore(coverage): add a prepass benchmark 2024-06-20 15:07:17 +08:00
src feat(minifier): add constant folding to remove dead code (#4058) 2024-07-05 15:44:01 +08:00
tests feat(minifier): add constant folding to remove dead code (#4058) 2024-07-05 15:44:01 +08:00
Cargo.toml Release crates v0.17.0 (#4059) 2024-07-05 15:46:50 +08:00
CHANGELOG.md Release crates v0.17.0 (#4059) 2024-07-05 15:46:50 +08:00
README.md chore: rename oxc_printer to oxc_formatter (#336) 2023-05-07 17:47:13 +08:00

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