claude/issue-11133-20251002-1022 - Branch - swc-project/swc

feat(es/minifier): Merge duplicate imports

#11138

Comparing

claude/issue-11133-20251002-1022

(

1a2188c

) with

main

(

d3cd97f

)

Untouched: 140

Ignored: 1

No successful run was found on main ( bebcc1c) during the generation of this report, so d3cd97f was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.

Benchmarks

Passed

es/parser/colors

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

+1%

85 µs84.3 µs

es/parser/underscore

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

2.5 ms2.5 ms

typescript/fast-strip

crates/swc_ts_fast_strip/benches/assets.rs::benches::fast_ts

435.8 µs434.1 µs

es/parser/angular

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

18.8 ms18.8 ms

es/parser/backbone

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

2.9 ms2.9 ms

es/parser/mootools

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

11.9 ms11.9 ms

es/parser/jquery

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

15.1 ms15 ms

es/parser/yui

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

11.6 ms11.6 ms

es/minifier/libs/three

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

632.8 ms631.4 ms

es/parser/jquery mobile

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

23.5 ms23.4 ms

es/minifier/libs/echarts

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

1.5 s1.5 s

es/parser/three

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

73 ms72.8 ms

es/parser/typescript

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

402.4 ms401.6 ms

es/parser/cal-com

crates/swc_ecma_parser/benches/parser.rs::benches::bench_files

59.3 ms59.2 ms

es/target/es3

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::version_group

395.9 µs395.3 µs

es/codegen/colors

crates/swc_ecma_codegen/benches/bench.rs::benches::bench_cases

70.6 µs70.6 µs

github

crates/swc_html_minifier/benches/full.rs::files_document::bench_files_document::html/minify/document

40.9 ms40.8 ms

es2015_duplicate_keys

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

280.9 µs280.6 µs

es2015_parameters

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

330.6 µs330.3 µs

es2015_shorthand_property

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

274 µs273.7 µs

es2015_spread

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

274.5 µs274.2 µs

css_spec

crates/swc_html_minifier/benches/full.rs::files_document_fragment::bench_files_document_fragment::html/minify/document_fragment

191.7 ms191.6 ms

github

crates/swc_html_minifier/benches/full.rs::files_document_fragment::bench_files_document_fragment::html/minify/document_fragment

40.3 ms40.2 ms

es2015_instanceof

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

280.5 µs280.3 µs

css_spec

crates/swc_html_minifier/benches/full.rs::files_document::bench_files_document::html/minify/document

194 ms193.8 ms

es2015_typeof_symbol

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

278.5 µs278.3 µs

es/lints/libs/jquery

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

6.5 ms6.5 ms

es2017_async_to_generator

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

276.1 µs275.9 µs

es/target/es2017

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::version_group

275.6 µs275.5 µs

es/target/es2016

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::version_group

289.7 µs289.6 µs

es/visitor/compare/fold_span

crates/swc_ecma_parser/benches/compare.rs::benches::bench_cases

6.8 ms6.8 ms

es2020_optional_chaining

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

336.6 µs336.4 µs

es2016_exponentiation

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

289.1 µs289 µs

es/minifier/libs/antd

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

1.9 s1.9 s

es/minifier/libs/typescript

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

3.7 s3.7 s

es2015_sticky_regex

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

277.6 µs277.5 µs

es2015_computed_props

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

274.3 µs274.2 µs

es2020_nullish_coalescing

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

298.7 µs298.6 µs

parse_and_babelify_yui

crates/swc_estree_compat/benches/babelify.rs::benches::bench_cases

66.4 ms66.3 ms

es/transform/baseline/base

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::baseline_group

260.5 µs260.4 µs

babelify-only

crates/swc_estree_compat/benches/babelify.rs::benches::bench_cases

2.1 ms2.1 ms

stackoverflow

crates/swc_html_minifier/benches/full.rs::files_document_fragment::bench_files_document_fragment::html/minify/document_fragment

35.5 ms35.5 ms

es2015_arrow

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

302.3 µs302.1 µs

es/visitor/compare/fold_span_panic

crates/swc_ecma_parser/benches/compare.rs::benches::bench_cases

6.8 ms6.8 ms

es/transform/baseline/common_reserved_word

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::baseline_group

284.7 µs284.6 µs

es2019_optional_catch_binding

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

273.7 µs273.6 µs

html/parser/parser_document_fragment/github_com_17_05_2022

crates/swc_html_parser/benches/parser.rs::benches::bench_files

22.4 ms22.3 ms

es/transform/baseline/common_typescript

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::baseline_group

364.3 µs364.2 µs

html/parser/parser_document_fragment/css_2021_spec

crates/swc_html_parser/benches/parser.rs::benches::bench_files

71.2 ms71.2 ms

es2015_fn_name

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

282.3 µs282.2 µs

parse_and_babelify_backbone

crates/swc_estree_compat/benches/babelify.rs::benches::bench_cases

15.3 ms15.3 ms

es/lints/libs/antd

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

156.1 ms156.1 ms

parse_and_babelify_jquery

crates/swc_estree_compat/benches/babelify.rs::benches::bench_cases

98.6 ms98.6 ms

es/lexer/backbone

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

1.4 ms1.4 ms

html/document_fragment/visitor/compare/visit_mut_span_panic

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1.1 ms1.1 ms

es/codegen/with-parser/large

crates/swc_ecma_codegen/benches/with_parse.rs::benches::bench_cases

1.2 ms1.2 ms

resolver/typescript

crates/swc_ecma_transforms_base/benches/parallel.rs::benches::bench_cases::es/base/parallel

12.3 s12.3 s

html/parser/parser_document_fragment/stackoverflow_com_17_05_2022

crates/swc_html_parser/benches/parser.rs::benches::bench_files

22.3 ms22.3 ms

es/lexer/underscore

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

1.2 ms1.2 ms

html/document/visitor/compare/fold_span_panic

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1.2 ms1.2 ms

html/document/visitor/compare/visit_mut_span_panic

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1.1 ms1.1 ms

parse_and_babelify_mootools

crates/swc_estree_compat/benches/babelify.rs::benches::bench_cases

72.7 ms72.7 ms

parse_and_babelify_underscore

crates/swc_estree_compat/benches/babelify.rs::benches::bench_cases

13.1 ms13.1 ms

es/fixer/typescript

crates/swc_ecma_transforms_base/benches/base.rs::benches::bench_cases

202.8 ms202.8 ms

parse_and_babelify_jquery_mobile

crates/swc_estree_compat/benches/babelify.rs::benches::bench_cases

169 ms169 ms

es2015_block_scoped_fn

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

289.6 µs289.5 µs

html/parser/parser_document/css_2021_spec

crates/swc_html_parser/benches/parser.rs::benches::bench_files

71.5 ms71.5 ms

es/lexer/jquery

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

7.7 ms7.7 ms

es/lints/libs/react

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

1.3 ms1.3 ms

parse_and_babelify_angular

crates/swc_estree_compat/benches/babelify.rs::benches::bench_cases

157.5 ms157.5 ms

es2015_block_scoping

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

451.8 µs451.8 µs

css/visitor/compare/visit_mut_span_panic

crates/swc_css_parser/benches/compare.rs::benches::bench_cases

5.1 ms5.1 ms

css/visitor/compare/fold_span

crates/swc_css_parser/benches/compare.rs::benches::bench_cases

5.7 ms5.7 ms

es/visitor/compare/clone

crates/swc_ecma_parser/benches/compare.rs::benches::bench_cases

5.5 ms5.5 ms

es/lints/libs/echarts

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

114 ms114 ms

css/visitor/compare/visit_mut_span

crates/swc_css_parser/benches/compare.rs::benches::bench_cases

5.1 ms5.1 ms

html/lexer/stackoverflow_com_17_05_2022

crates/swc_html_parser/benches/lexer.rs::benches::bench_files

14.7 ms14.7 ms

es/lexer/yui

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

6.2 ms6.2 ms

css/lexer/bootstrap_5_1_3

crates/swc_css_parser/benches/lexer.rs::benches::bench_files

10 ms10 ms

es/lexer/mootools

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

6.1 ms6.1 ms

html/lexer/github_com_17_05_2022

crates/swc_html_parser/benches/lexer.rs::benches::bench_files

14.6 ms14.6 ms

css/visitor/compare/fold_span_panic

crates/swc_css_parser/benches/compare.rs::benches::bench_cases

5.7 ms5.7 ms

es/lexer/typescript

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

184.5 ms184.5 ms

es/lexer/colors

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

35.7 µs35.7 µs

es/visitor/compare/visit_mut_span_panic

crates/swc_ecma_parser/benches/compare.rs::benches::bench_cases

6 ms6 ms

es/lexer/angular

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

10.1 ms10.1 ms

html/lexer/css_2021_spec

crates/swc_html_parser/benches/lexer.rs::benches::bench_files

40.7 ms40.7 ms

es/lexer/three

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

36.2 ms36.2 ms

html/document_fragment/visitor/compare/visit_mut_span

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1.1 ms1.1 ms

es/lexer/jquery mobile

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

11.7 ms11.7 ms

es/resolver/typescript

crates/swc_ecma_transforms_base/benches/base.rs::benches::bench_cases

244.2 ms244.3 ms

es/lexer/cal-com

crates/swc_ecma_lexer/benches/lexer.rs::benches::bench_files

29.5 ms29.5 ms

css/visitor/compare/clone

crates/swc_css_parser/benches/compare.rs::benches::bench_cases

4.8 ms4.8 ms

css/parser/bootstrap_5_1_3

crates/swc_css_parser/benches/parser.rs::benches::bench_files

46.9 ms46.9 ms

es/visitor/compare/visit_mut_span

crates/swc_ecma_parser/benches/compare.rs::benches::bench_cases

6 ms6 ms

html/document/visitor/compare/fold_span

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1.2 ms1.2 ms

css/lexer/tailwind_3_1_1

crates/swc_css_parser/benches/lexer.rs::benches::bench_files

1.6 ms1.6 ms

html/document_fragment/visitor/compare/fold_span

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1.2 ms1.2 ms

es/lints/libs/moment

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

4.2 ms4.2 ms

css/parser/tailwind_3_1_1

crates/swc_css_parser/benches/parser.rs::benches::bench_files

7.2 ms7.2 ms

css/lexer/foundation_6_7_4

crates/swc_css_parser/benches/lexer.rs::benches::bench_files

8.2 ms8.2 ms

es2015_destructuring

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

347.8 µs347.8 µs

es/lints/libs/vue

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

8.3 ms8.3 ms

html/parser/parser_document/stackoverflow_com_17_05_2022

crates/swc_html_parser/benches/parser.rs::benches::bench_files

22.3 ms22.3 ms

html/document/visitor/compare/visit_mut_span

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1.1 ms1.1 ms

html/document/visitor/compare/clone

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1 ms1 ms

html/document_fragment/visitor/compare/clone

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1 ms1 ms

es/target/es2015

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::version_group

1.2 ms1.2 ms

html/parser/parser_document/github_com_17_05_2022

crates/swc_html_parser/benches/parser.rs::benches::bench_files

22.4 ms22.4 ms

es/resolver_with_hygiene/typescript

crates/swc_ecma_transforms_base/benches/base.rs::benches::bench_cases

734.6 ms734.8 ms

es/lints/libs/lodash

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

6.2 ms6.2 ms

html/document_fragment/visitor/compare/fold_span_panic

crates/swc_html_parser/benches/compare.rs::benches::bench_cases

1.2 ms1.2 ms

css/parser/foundation_6_7_4

crates/swc_css_parser/benches/parser.rs::benches::bench_files

37.2 ms37.2 ms

es/lints/libs/typescript

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

276 ms276.1 ms

hygiene/typescript

crates/swc_ecma_transforms_base/benches/parallel.rs::benches::bench_cases::es/base/parallel

21.3 s21.3 s

es2015_classes

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

390 µs390.2 µs

es2022_class_properties

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

380.7 µs380.9 µs

es2018_object_rest_spread

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

291.8 µs292 µs

es/target/es2018

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::version_group

309.4 µs309.6 µs

es2015_for_of

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::single_tr_group

290.1 µs290.3 µs

es/minifier/libs/d3

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

385.2 ms385.5 ms

stackoverflow

crates/swc_html_minifier/benches/full.rs::files_document::bench_files_document::html/minify/document

35.3 ms35.3 ms

es/minifier/libs/jquery

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

94.6 ms94.7 ms

es/lints/libs/victory

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

70.6 ms70.6 ms

es/minifier/libs/lodash

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

111.3 ms111.4 ms

es/codegen/large

crates/swc_ecma_codegen/benches/bench.rs::benches::bench_cases

644.8 µs645.3 µs

es/target/es2020

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::version_group

445 µs445.4 µs

es/full-target/es2017

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::full_group

523.9 µs524.5 µs

es/lints/libs/three

crates/swc_ecma_lints/benches/all.rs::files::bench_files::es/lints/libs

50.2 ms50.2 ms

es/full-target/es2016

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::full_group

559.7 µs560.3 µs

es/minifier/libs/vue

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

139.7 ms139.9 ms

es/minifier/libs/terser

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

340.3 ms340.7 ms

es/minifier/libs/moment

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

61.3 ms61.4 ms

es/preset-env/usage/builtin_type

crates/swc_ecma_preset_env/benches/polyfills.rs::benches::bench_cases

246.9 µs247.2 µs

es/full-target/es2018

crates/swc_ecma_transforms_typescript/benches/compat.rs::benches::full_group

507.4 µs508.1 µs

es/codegen/with-parser/colors

crates/swc_ecma_codegen/benches/with_parse.rs::benches::bench_cases

156.1 µs156.3 µs

es/hygiene/typescript

crates/swc_ecma_transforms_base/benches/base.rs::benches::bench_cases

425.5 ms426.3 ms

es/minifier/libs/react

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

19.1 ms19.2 ms

es/minifier/libs/victory

crates/swc_ecma_minifier/benches/full.rs::bench_all::bench_libs::es/minifier/libs

835.4 ms838.9 ms

es/preset-env/usage/property

crates/swc_ecma_preset_env/benches/polyfills.rs::benches::bench_cases

-1%

115.2 µs115.8 µs

Ignored

es/preset-env/entry/import

crates/swc_ecma_preset_env/benches/polyfills.rs::benches::bench_cases

Ignored

+1%

28.3 µs28.2 µs

Commits

Click on a commit to change the comparison range

Base

main

d3cd97f

+0.04%

feat(minifier): add merge_duplicate_imports option to compress settings Implement feature to merge duplicate named imports from the same module during minification to reduce bundle size. - Add merge_duplicate_imports option to CompressOptions (defaults to false) - Create merge_duplicate_imports function in pure optimizer that directly iterates over ModuleItems - Handle named, default, and namespace imports correctly without creating new visitor - Preserve import semantics while merging compatible imports - Add test case for various import merging scenarios Fixes #11133 🤖 Generated with [Claude Code](https://claude.ai/code) Co-authored-by: Donny/강동윤 <kdy1@users.noreply.github.com>

a21cd1c

4 days ago

by claude[bot]

-0.02%

feat(es/minifier): Make import deduplication unconditional Remove merge_duplicate_imports option and make import deduplication run unconditionally during minification to reduce bundle size. - Remove merge_duplicate_imports option from CompressOptions - Update pure optimizer to always merge duplicate imports - Remove option from Terser compatibility layer - Update test configuration to reflect unconditional behavior Fixes #11133 🤖 Generated with [Claude Code](https://claude.ai/code) Co-authored-by: Donny/강동윤 <kdy1@users.noreply.github.com>

1a2188c

4 days ago

by claude[bot]

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