Places in code with 6 or more lines that are exactly the same.
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.
- To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:
- Avoid Repetition, MartinFlower.com (IEEE Software article)
- Refactoring duplicated code, sourcemaking.com
- Beck Design Rules, MartinFowler.com
- DRY (Don't Repeat Yourself) Principle, Wikipedia
- The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
- Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:
- "Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"
- Reducing Coupling, MartinFlower.com (IEEE Software article):
- "There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."
Duplication Overall
- 5% duplication:
- 31,946 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 1,856 duplicated lines
- 297 duplicates
Duplication per Extension
Duplication per Component (primary)
Duplication Between Components (50+ lines)
Open 3D force graph...
Show more details on duplication between components...
From Component
--> To Component
Duplicated
Lines
File Pairs
Details
packages/docusaurus-theme-classic (2%)
--> website/src (1%)
231
7 file pairs
details...
packages/create-docusaurus (7%)
--> website (7%)
133
3 file pairs
details...
packages/docusaurus-plugin-google-analytics (47%)
--> packages/docusaurus-plugin-google-gtag (38%)
70
1 file pair
details...
packages/docusaurus-theme-live-codeblock (15%)
--> packages/docusaurus-theme-search-algolia (6%)
66
3 file pairs
details...
packages/docusaurus-plugin-content-blog (2%)
--> packages/docusaurus-plugin-content-docs (<1%)
62
2 file pairs
details...
packages/docusaurus-plugin-debug (7%)
--> packages/docusaurus-theme-live-codeblock (14%)
60
2 file pairs
details...
packages/docusaurus-plugin-content-blog (2%)
--> packages/docusaurus-plugin-content-pages (11%)
58
1 file pair
details...
packages/docusaurus-plugin-ideal-image (19%)
--> packages/docusaurus-theme-search-algolia (5%)
54
2 file pairs
details...
packages/docusaurus-plugin-ideal-image (19%)
--> packages/docusaurus-theme-live-codeblock (12%)
54
2 file pairs
details...
packages/docusaurus-plugin-content-docs (<1%)
--> packages/docusaurus-plugin-content-pages (10%)
52
1 file pair
details...
packages/docusaurus-plugin-ideal-image (19%)
--> packages/docusaurus (<1%)
52
2 file pairs
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| packages/docusaurus-theme-classic (2%) --> website/src (1%) |
231 | 7 file pairs | details... |
| packages/create-docusaurus (7%) --> website (7%) |
133 | 3 file pairs | details... |
| packages/docusaurus-plugin-google-analytics (47%) --> packages/docusaurus-plugin-google-gtag (38%) |
70 | 1 file pair | details... |
| packages/docusaurus-theme-live-codeblock (15%) --> packages/docusaurus-theme-search-algolia (6%) |
66 | 3 file pairs | details... |
| packages/docusaurus-plugin-content-blog (2%) --> packages/docusaurus-plugin-content-docs (<1%) |
62 | 2 file pairs | details... |
| packages/docusaurus-plugin-debug (7%) --> packages/docusaurus-theme-live-codeblock (14%) |
60 | 2 file pairs | details... |
| packages/docusaurus-plugin-content-blog (2%) --> packages/docusaurus-plugin-content-pages (11%) |
58 | 1 file pair | details... |
| packages/docusaurus-plugin-ideal-image (19%) --> packages/docusaurus-theme-search-algolia (5%) |
54 | 2 file pairs | details... |
| packages/docusaurus-plugin-ideal-image (19%) --> packages/docusaurus-theme-live-codeblock (12%) |
54 | 2 file pairs | details... |
| packages/docusaurus-plugin-content-docs (<1%) --> packages/docusaurus-plugin-content-pages (10%) |
52 | 1 file pair | details... |
| packages/docusaurus-plugin-ideal-image (19%) --> packages/docusaurus (<1%) |
52 | 2 file pairs | details... |
Longest Duplicates
The list of 50 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 28 | x 2 | packages/create-docusaur...onents/HomepageFeaturespackages/create-docusaur...onents/HomepageFeatures | 13:42 (48%)7:36 (52%) | view | |
| 23 | x 2 | packages/create-docusaurus/templates/facebookwebsite | 119:147 (20%)513:542 (5%) | view | |
| 20 | x 2 | packages/docusaurus-plugin-content-docs/srcpackages/docusaurus-plugin-content-pages/src | 336:357 (6%)190:211 (10%) | view | |
| 20 | x 2 | packages/create-docusaur...mplates/classic/src/csspackages/create-docusaur...plates/facebook/src/css | 8:30 (71%)17:39 (80%) | view | |
| 18 | x 2 | website/versioned_docs/v...uides/markdown-featureswebsite/versioned_docs/v...uides/markdown-features | 8:30 (100%)8:30 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-pwapackages/docusaurus-theme-search-algolia | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-ideal-imagepackages/docusaurus-theme-search-algolia | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-debugpackages/docusaurus-plugin-pwa | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-theme-search-algoliapackages/docusaurus | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-pwapackages/docusaurus-theme-live-codeblock | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-theme-commonpackages/docusaurus | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-pwapackages/docusaurus-theme-common | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-theme-live-codeblockpackages/docusaurus | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-ideal-imagepackages/docusaurus-theme-common | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-debugpackages/docusaurus-theme-search-algolia | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-ideal-imagepackages/docusaurus-plugin-pwa | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-ideal-imagepackages/docusaurus | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-pwapackages/docusaurus | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-ideal-imagepackages/docusaurus-theme-live-codeblock | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-theme-commonpackages/docusaurus-theme-live-codeblock | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-debugpackages/docusaurus-theme-live-codeblock | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-debugpackages/docusaurus-plugin-ideal-image | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-theme-commonpackages/docusaurus-theme-search-algolia | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-theme-live-codeblockpackages/docusaurus-theme-search-algolia | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-debugpackages/docusaurus | 1:20 (100%)1:20 (100%) | view | |
| 18 | x 2 | packages/docusaurus-plugin-debugpackages/docusaurus-theme-common | 1:20 (100%)1:20 (100%) | view | |
| 17 | x 2 | packages/docusaurus-plugin-google-analytics/srcpackages/docusaurus-plugin-google-gtag/src | 61:82 (26%)75:96 (23%) | view | |
| 17 | x 2 | packages/docusaurus-them.../src/theme/BlogPostPagewebsite/src/plugins/changelog/theme/ChangelogPage | 36:52 (20%)38:54 (18%) | view | |
| 17 | x 2 | packages/create-docusaur...ic-typescript/src/pagespackages/create-docusaur...lates/classic/src/pages | 9:25 (58%)9:25 (58%) | view | |
| 16 | x 2 | packages/create-docusaur...ic-typescript/src/pagespackages/create-docusaur...lates/classic/src/pages | 6:23 (100%)6:23 (100%) | view | |
| 16 | x 2 | packages/create-docusaur...ic-typescript/src/pagespackages/create-docusaur...ates/facebook/src/pages | 6:23 (100%)15:32 (61%) | view | |
| 16 | x 2 | packages/create-docusaur...lates/classic/src/pagespackages/create-docusaur...ates/facebook/src/pages | 6:23 (100%)15:32 (61%) | view | |
| 15 | x 2 | packages/create-docusaurus/templates/classicpackages/create-docusaurus/templates/facebook | 31:48 (15%)37:54 (13%) | view | |
| 13 | x 2 | packages/docusaurus-them.../src/theme/BlogPostPagewebsite/src/plugins/changelog/theme/ChangelogPage | 22:34 (16%)23:36 (13%) | view | |
| 13 | x 2 | packages/docusaurus-them.../src/theme/BlogPostPagewebsite/src/plugins/changelog/theme/ChangelogPage | 65:77 (16%)76:88 (13%) | view | |
| 13 | x 2 | packages/create-docusaurus/templates/classicpackages/create-docusaurus/templates/facebook | 11:28 (13%)16:33 (11%) | view | |
| 13 | x 2 | packages/docusaurus-plugin-content-blog/srcpackages/docusaurus-plugin-content-pages/src | 422:437 (2%)185:200 (7%) | view | |
| 12 | x 2 | packages/docusaurus-them.../src/theme/BlogPostItemwebsite/src/plugins/changelog/theme/ChangelogItem | 78:89 (9%)47:58 (23%) | view | |
| 12 | x 2 | packages/docusaurus-plugin-google-analytics/srcpackages/docusaurus-plugin-google-gtag/src | 30:44 (19%)34:50 (16%) | view | |
| 12 | x 2 | packages/docusaurus-them...c/theme/BlogPostAuthorswebsite/src/plugins/chan.../theme/ChangelogAuthors | 8:21 (100%)8:21 (46%) | view | |
| 11 | x 2 | packages/create-docusaur...onents/HomepageFeaturespackages/create-docusaur...onents/HomepageFeatures | 59:69 (18%)53:63 (20%) | view | |
| 11 | x 2 | packages/docusaurus-plugin-content-blog/srcpackages/docusaurus-plugin-content-blog/src | 27:37 (8%)137:147 (8%) | view | |
| 11 | x 2 | packages/create-docusaur...onents/HomepageFeaturespackages/create-docusaur...onents/HomepageFeatures | 45:55 (18%)39:49 (20%) | view | |
| 11 | x 2 | packages/create-docusaur...ic-typescript/src/pagespackages/create-docusaur...lates/classic/src/pages | 29:39 (37%)29:39 (37%) | view | |
| 10 | x 2 | packages/docusaurus-plug...src/theme/DebugRegistrypackages/docusaurus-plug...g/src/theme/DebugRoutes | 8:18 (100%)8:18 (62%) | view | |
| 10 | x 2 | packages/create-docusaur...onents/HomepageFeaturespackages/create-docusaur...onents/HomepageFeatures | 1:11 (100%)1:11 (100%) | view | |
| 10 | x 2 | packages/docusaurus-plugin-content-blog/srcpackages/docusaurus-plugin-content-docs/src | 440:451 (2%)349:360 (3%) | view | |
| 10 | x 2 | packages/docusaurus-plug...g/src/theme/DebugRoutespackages/docusaurus-plug...theme/DebugSiteMetadata | 8:18 (62%)12:22 (50%) | view | |
| 10 | x 2 | packages/docusaurus-plug...src/theme/DebugRegistrypackages/docusaurus-plug...theme/DebugSiteMetadata | 8:18 (100%)12:22 (50%) | view | |
| 9 | x 2 | packages/docusaurus-plugin-ideal-image/srcpackages/docusaurus-theme-search-algolia/src | 28:38 (14%)49:58 (11%) | view |
Duplicated Units
The list of top 5 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 9 | x 2 | packages/create-docusaur...lates/classic/src/pagespackages/create-docusaur...ic-typescript/src/pages | 9:26 9:26 | view | |
| 14 | x 2 | packages/docusaurus-them...theme/DocTagDocListPagepackages/docusaurus-them...theme/BlogTagsPostsPage | 25:40 26:41 | view | |
| 6 | x 2 | packages/create-docusaur...lates/classic/src/pagespackages/create-docusaur...ic-typescript/src/pages | 28:40 28:40 | view | |
| 8 | x 2 | packages/docusaurus-plugin-google-analytics/srcpackages/docusaurus-plugin-google-gtag/src | 80:89 94:103 | view | |
| 6 | x 3 | packages/docusaurus-them...xts/navbarSecondaryMenupackages/docusaurus-theme-common/src/contextspackages/docusaurus-theme-common/src/contexts | 61:68 158:165 164:171 | view |