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oxc/crates/oxc_minifier
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github-actions[bot] f76113cd8f
Release crates v0.22.0 (#4417) 
## [0.22.0] - 2024-07-23

- 85a7cea semantic: [**BREAKING**] Remove name from `reference` (#4329)
(Dunqing)

- f68b659 ast: [**BREAKING**] Reorder fields of
`ArrowFunctionExpression` (#4364) (Dunqing)

### Features

- d345b84 ast: Add `#[ast]` attribute to non-visited AST types. (#4309)
(rzvxa)
- 3c0c709 linter: Add typescript-eslint/no-extraneous-class (#4357)
(Jaden Rodriguez)
- 68efcd4 linter/react-perf: Handle new objects and arrays in prop
assignment patterns (#4396) (DonIsaac)
- 0deb027 minfier: Dce `if (xxx) else if (false) { REMOVE }` (#4407)
(Boshen)
- e33ec18 minifier: Compress `typeof foo == "undefined"` into `typeof
foo > "u"` (#4412) (Boshen)- 6068e6b Add error codes to OxcDiagnostic
(#4334) (DonIsaac)

### Bug Fixes

- aece1df ast: Visit `Program`s `hashbang` field first (#4368)
(overlookmotel)
- 44a10c4 codegen: Object shorthand with parens `({x: (x)})` -> `({ x
})` (#4391) (Boshen)
- 3d88f20 codegen: Print shorthand for all `{ x }` variants (#4374)
(Boshen)
- e624dff codegen,mangler: Do not print shorthand for `ObjectProperty`
(#4350) (Boshen)
- ac08de8 linter/react_perf: Allow new objects, array, fns, etc in top
scope (#4395) (DonIsaac)
- 267f7c4 minifier: Skip `Object.defineProperty(exports, ...)` for
`cjs-module-lexer` (#4409) (Boshen)
- bc8d4e5 semantic: Correct comment (#4410) (overlookmotel)
- 6ffce86 semantic: Align `visit_arrow_function_expression` field visit
order with ast (#4366) (Dunqing)
- 4cd5df0 sourcemap: Avoid negative line if token_chunks has same
prev_dst_line (#4348) (underfin)
- f8565ae transformer/typescript: Unexpectedly removed class binding
from ExportNamedDeclaration (#4351) (Dunqing)- ea33f94 Impl
PartialEq<str> for CompactStr (#4352) (DonIsaac)

### Performance

- 1b51511 semantic: Use `Atom` instead of `CompactStr` for
`UnresolvedReferencesStack` (#4401) (Dunqing)
- 40f9356 semantic: Calculate number of nodes, scopes, symbols,
references before visiting AST (#4367) (Dunqing)
- da13d93 semantic: Remove bounds checks on unresolved references stack
(#4390) (overlookmotel)
- e70c67b semantic: Remove a branch from `add_scope` (#4384)
(overlookmotel)
- 402006f semantic: Simplify logic in `enter_scope` + `leave_scope`
(#4383) (overlookmotel)
- 7469e01 semantic: Remove branch from `Nodes::add_node` (#4361)
(overlookmotel)
- 7eb2864 traverse: Speed up finding UID binding name (#4356)
(overlookmotel)- a207923 Replace some CompactStr usages with Cows
(#4377) (DonIsaac)

### Refactor

- d213773 ast: Replace serde rename "lowercase" with "camelCase" (#4376)
(overlookmotel)
- abfccbd ast: Reduce `#[cfg_attr]` boilerplate in AST type defs (#4375)
(overlookmotel)
- 5f1c7ec ast: Rename the `visited_node` marker to `ast`. (#4289)
(rzvxa)
- 58f6ec2 ast: Enter node before scope (#4347) (Dunqing)
- 59aea73 ast: Scope is created only if CatchClause has param (#4346)
(Dunqing)
- 7a3e925 ast_codegen: Better visit marker parsing. (#4371) (rzvxa)
- 7a75e0f linter: Use diagnostic codes in lint rules (#4349) (DonIsaac)
- a2eabe1 parser: Use error codes for ts diagnostics (#4335) (DonIsaac)
- 5d77b36 semantic: `visit_program` visit `hashbang` field (#4370)
(overlookmotel)
- f7b9ada semantic: `Program` visitor leave scope before node (#4369)
(overlookmotel)
- 729b288 semantic: Shorten code (#4358) (overlookmotel)
- 21d0eee semantic: Use error codes for ts diagnostics (#4336)
(DonIsaac)

Co-authored-by: Boshen <Boshen@users.noreply.github.com>
2024-07-23 13:24:08 +08:00
..
examples chore: move mangler example to minifier (#4343) 2024-07-18 06:27:16 +00:00
src feat(minifier): compress typeof foo == "undefined" into typeof foo > "u" (#4412) 2024-07-22 12:44:33 +00:00
tests feat(minifier): compress typeof foo == "undefined" into typeof foo > "u" (#4412) 2024-07-22 12:44:33 +00:00
Cargo.toml Release crates v0.22.0 (#4417) 2024-07-23 13:24:08 +08:00
CHANGELOG.md Release crates v0.22.0 (#4417) 2024-07-23 13:24:08 +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