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Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

Duplication Overall

5% duplication:

16,278 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
942 duplicated lines

130 duplicates

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
_test (11%) --> _test_null_safety (27%)	60	2 file pairs	details...
build_vm_compilers (14%) --> build_web_compilers (1%)	56	4 file pairs	details...
build_modules (1%) --> build_web_compilers (1%)	56	3 file pairs	details...

Open 3D force graph...

Show more details on duplication between components...

Longest Duplicates

The list of 20 longest duplicates.

See data for all 130 duplicates...

Size	#	Folders	Files	Lines	Code
29	x 2	build_runner/lib/src/entrypoint build_runner/lib/src/entrypoint	options.dart options.dart	137:165 (7%) 285:313 (7%)	view
23	x 2	_test _test_null_safety	pubspec.yaml pubspec.yaml	25:47 (52%) 16:38 (65%)	view
18	x 2	build_web_compilers/lib/src build_web_compilers/lib/src	platforms.dart platforms.dart	8:25 (46%) 28:45 (46%)	view
18	x 2	build_runner/lib/src/entrypoint build_runner/lib/src/entrypoint	options.dart options.dart	106:123 (4%) 249:266 (4%)	view
17	x 2	build_runner/lib/src/build_script_generate build_runner/lib/src/build_script_generate	build_script_generate.dart build_script_generate.dart	253:269 (5%) 286:302 (5%)	view
17	x 2	build_runner/lib/src/entrypoint build_runner/lib/src/entrypoint	serve.dart watch.dart	85:101 (14%) 49:65 (26%)	view
16	x 2	build_test scratch_space	mono_pkg.yaml mono_pkg.yaml	1:18 (100%) 1:18 (100%)	view
16	x 2	_test _test	build.post_process.yaml build.throws.yaml	7:22 (72%) 7:22 (72%)	view
15	x 2	build_runner/lib/src/entrypoint build_runner/lib/src/entrypoint	options.dart options.dart	191:205 (3%) 370:384 (3%)	view
14	x 2	build_config build_test	mono_pkg.yaml mono_pkg.yaml	2:17 (93%) 3:18 (87%)	view
14	x 2	build_runner/lib/src/entrypoint build_runner/lib/src/entrypoint	options.dart options.dart	149:162 (3%) 231:244 (3%)	view
14	x 2	build_config scratch_space	mono_pkg.yaml mono_pkg.yaml	2:17 (93%) 3:18 (87%)	view
14	x 2	build_runner/lib/src/entrypoint build_runner/lib/src/entrypoint	options.dart options.dart	231:244 (3%) 297:310 (3%)	view
13	x 2	build_runner_core/lib/src/package_graph build_runner_core/lib/src/package_graph	apply_builders.dart apply_builders.dart	167:182 (4%) 208:223 (4%)	view
12	x 2	build_runner/lib/src/entrypoint build_runner/lib/src/entrypoint	options.dart options.dart	219:230 (3%) 284:295 (3%)	view
12	x 2	build_resolvers/lib/src build_runner_core/lib/src/logging	human_readable_duration.dart human_readable_duration.dart	16:30 (100%) 13:27 (100%)	view
12	x 2	build_config build_daemon	mono_pkg.yaml mono_pkg.yaml	1:13 (80%) 1:13 (100%)	view
12	x 2	build_config build_web_compilers	mono_pkg.yaml mono_pkg.yaml	1:13 (80%) 1:13 (100%)	view
12	x 2	build_daemon build_web_compilers	mono_pkg.yaml mono_pkg.yaml	1:13 (100%) 1:13 (100%)	view
11	x 2	build_config tool	mono_pkg.yaml mono_repo.yaml	1:12 (73%) 1:12 (100%)	view

Duplicated Units

The list of top 4 duplicated units.

See data for all 4 unit duplicates...

Size	#	Folders	Files	Lines	Code
15	x 2	build_resolvers/lib/src build_runner_core/lib/src/logging	human_readable_duration.dart human_readable_duration.dart	16:31 13:28	view
11	x 2	build_web_compilers/lib/src build_vm_compilers/lib/src	web_entrypoint_builder.dart vm_entrypoint_builder.dart	170:188 83:101	view
9	x 2	build_web_compilers/lib/src build_web_compilers/web	common.dart stack_trace_mapper.dart	67:77 42:52	view
7	x 2	build_runner/lib/src/entrypoint build_runner/lib/src/entrypoint	options.dart options.dart	108:115 251:258	view