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
- 75% duplication:
- 6,114 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 4,597 duplicated lines
- 354 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
cloudformationTemplates/asyncCustomerChatUX/website (99%)
--> cloudformationTemplates/urlPreviewForAsyncChat/website (99%)
1330
2 file pairs
details...
cloudformationTemplates/asyncCustomerChatUX/js (99%)
--> cloudformationTemplates/urlPreviewForAsyncChat/js (99%)
1314
11 file pairs
details...
cloudformationTemplates/asyncCustomerChatUX (102%)
--> cloudformationTemplates/urlPreviewForAsyncChat (83%)
1303
1 file pair
details...
cloudformationTemplates/startChatContactAPI (54%)
--> cloudformationTemplates/urlPreviewForAsyncChat (33%)
529
1 file pair
details...
cloudformationTemplates/asyncCustomerChatUX (36%)
--> cloudformationTemplates/startChatContactAPI (47%)
460
1 file pair
details...
cloudformationTemplates/asyncCustomerChatUX/js (31%)
--> cloudformationTemplates/startChatContactAPI/js (88%)
419
4 file pairs
details...
cloudformationTemplates/startChatContactAPI/js (88%)
--> cloudformationTemplates/urlPreviewForAsyncChat/js (31%)
419
4 file pairs
details...
cloudformationTemplates/asyncCustomerChatUX/website (3%)
--> customChatWidget/src/containers (7%)
50
1 file pair
details...
cloudformationTemplates/urlPreviewForAsyncChat/website (3%)
--> customChatWidget/src/containers (7%)
50
1 file pair
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| cloudformationTemplates/asyncCustomerChatUX/website (99%) --> cloudformationTemplates/urlPreviewForAsyncChat/website (99%) |
1330 | 2 file pairs | details... |
| cloudformationTemplates/asyncCustomerChatUX/js (99%) --> cloudformationTemplates/urlPreviewForAsyncChat/js (99%) |
1314 | 11 file pairs | details... |
| cloudformationTemplates/asyncCustomerChatUX (102%) --> cloudformationTemplates/urlPreviewForAsyncChat (83%) |
1303 | 1 file pair | details... |
| cloudformationTemplates/startChatContactAPI (54%) --> cloudformationTemplates/urlPreviewForAsyncChat (33%) |
529 | 1 file pair | details... |
| cloudformationTemplates/asyncCustomerChatUX (36%) --> cloudformationTemplates/startChatContactAPI (47%) |
460 | 1 file pair | details... |
| cloudformationTemplates/asyncCustomerChatUX/js (31%) --> cloudformationTemplates/startChatContactAPI/js (88%) |
419 | 4 file pairs | details... |
| cloudformationTemplates/startChatContactAPI/js (88%) --> cloudformationTemplates/urlPreviewForAsyncChat/js (31%) |
419 | 4 file pairs | details... |
| cloudformationTemplates/asyncCustomerChatUX/website (3%) --> customChatWidget/src/containers (7%) |
50 | 1 file pair | details... |
| cloudformationTemplates/urlPreviewForAsyncChat/website (3%) --> customChatWidget/src/containers (7%) |
50 | 1 file pair | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 267 | x 2 | cloudformationTemplates/...tomerChatUX/website/csscloudformationTemplates/...orAsyncChat/website/css |  style.cssstyle.css |
2:323 (100%)2:323 (100%) | view |
| 255 | x 2 | cloudformationTemplates/asyncCustomerChatUXcloudformationTemplates/urlPreviewForAsyncChat |  cloudformation.yamlcloudformation.yaml |
321:591 (39%)397:666 (32%) | view |
| 240 | x 2 | cloudformationTemplates/...cCustomerChatUX/websitecloudformationTemplates/...iewForAsyncChat/website |  index.htmlindex.html |
1:295 (60%)1:295 (60%) | view |
| 182 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/urlPreviewForAsyncChat/js |  startChatContact.jsstartChatContact.js |
1:232 (100%)1:232 (100%) | view |
| 158 | x 2 | cloudformationTemplates/...cCustomerChatUX/websitecloudformationTemplates/...iewForAsyncChat/website | index.htmlindex.html |
298:485 (39%)298:485 (39%) | view |
| 153 | x 2 | cloudformationTemplates/asyncCustomerChatUXcloudformationTemplates/urlPreviewForAsyncChat | cloudformation.yamlcloudformation.yaml |
90:249 (23%)217:376 (19%) | view |
| 146 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/urlPreviewForAsyncChat/js | customResourceHelper.jscustomResourceHelper.js |
15:203 (100%)15:203 (100%) | view |
| 99 | x 2 | cloudformationTemplates/asyncCustomerChatUXcloudformationTemplates/urlPreviewForAsyncChat | cloudformation.yamlcloudformation.yaml |
578:682 (15%)724:828 (12%) | view |
| 87 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/urlPreviewForAsyncChat/js | S3NotificationConfiguration.jsS3NotificationConfiguration.js |
1:113 (100%)1:113 (100%) | view |
| 75 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/urlPreviewForAsyncChat/js | websiteCreator.jswebsiteCreator.js |
1:96 (100%)1:96 (100%) | view |
| 59 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/startChatContactAPI/js | customResourceHelper.jscustomResourceHelper.js |
130:203 (40%)108:181 (46%) | view |
| 59 | x 2 | cloudformationTemplates/startChatContactAPI/jscloudformationTemplates/urlPreviewForAsyncChat/js | customResourceHelper.jscustomResourceHelper.js |
108:181 (46%)130:203 (40%) | view |
| 58 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/urlPreviewForAsyncChat/js | updateChatDdbWithS3Key.jsupdateChatDdbWithS3Key.js |
1:76 (100%)1:76 (100%) | view |
| 56 | x 2 | cloudformationTemplates/asyncCustomerChatUXcloudformationTemplates/urlPreviewForAsyncChat | cloudformation.yamlcloudformation.yaml |
15:72 (8%)13:70 (7%) | view |
| 50 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/urlPreviewForAsyncChat/js | websiteHelper.jswebsiteHelper.js |
68:139 (67%)68:139 (67%) | view |
| 46 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/urlPreviewForAsyncChat/js | websiteCreator.jsS3NotificationConfiguration.js |
38:96 (61%)54:113 (52%) | view |
| 46 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/asyncCustomerChatUX/js | S3NotificationConfiguration.jswebsiteCreator.js |
54:113 (52%)38:96 (61%) | view |
| 46 | x 2 | cloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/urlPreviewForAsyncChat/js | S3NotificationConfiguration.jswebsiteCreator.js |
54:113 (52%)38:96 (61%) | view |
| 46 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/urlPreviewForAsyncChat/js | S3NotificationConfiguration.jswebsiteCreator.js |
54:113 (52%)38:96 (61%) | view |
| 43 | x 2 | cloudformationTemplates/asyncCustomerChatUXcloudformationTemplates/startChatContactAPI | cloudformation.yamlcloudformation.yaml |
361:404 (6%)204:247 (16%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 38 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | S3NotificationConfiguration.jsS3NotificationConfiguration.js |
19:60 19:60 | view |
| 33 | x 3 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/startChatContactAPI/js | customResourceHelper.jscustomResourceHelper.jscustomResourceHelper.js |
166:203 166:203 144:181 | view |
| 31 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | startChatContact.jsstartChatContact.js |
99:133 99:133 | view |
| 37 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | websiteHelper.jswebsiteHelper.js |
89:133 89:133 | view |
| 38 | x 4 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/asyncCustomerChatUX/js | S3NotificationConfiguration.jswebsiteCreator.jsS3NotificationConfiguration.jswebsiteCreator.js |
62:107 45:90 62:107 45:90 | view |
| 30 | x 3 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/startChatContactAPI/js | metricsHelper.jsmetricsHelper.jsmetricsHelper.js |
40:79 40:79 40:79 | view |
| 28 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | startChatContact.jsstartChatContact.js |
135:165 135:165 | view |
| 26 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | startChatContact.jsstartChatContact.js |
167:194 167:194 | view |
| 24 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | startChatContact.jsstartChatContact.js |
71:97 71:97 | view |
| 22 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | updateChatDdbWithS3Key.jsupdateChatDdbWithS3Key.js |
31:54 31:54 | view |
| 16 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | startChatContact.jsstartChatContact.js |
213:229 213:229 | view |
| 15 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | startChatContact.jsstartChatContact.js |
196:211 196:211 | view |
| 13 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | websiteCreator.jswebsiteCreator.js |
28:43 28:43 | view |
| 11 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | customResourceHelper.jscustomResourceHelper.js |
74:86 74:86 | view |
| 10 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | updateChatDdbWithS3Key.jsupdateChatDdbWithS3Key.js |
67:77 67:77 | view |
| 9 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | updateChatDdbWithS3Key.jsupdateChatDdbWithS3Key.js |
56:65 56:65 | view |
| 11 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | S3NotificationConfiguration.jsS3NotificationConfiguration.js |
4:17 4:17 | view |
| 7 | x 4 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/jscloudformationTemplates/asyncCustomerChatUX/js | S3NotificationConfiguration.jswebsiteCreator.jsS3NotificationConfiguration.jswebsiteCreator.js |
69:80 52:63 69:80 52:63 | view |
| 7 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | websiteHelper.jswebsiteHelper.js |
77:85 77:85 | view |
| 6 | x 2 | cloudformationTemplates/urlPreviewForAsyncChat/jscloudformationTemplates/asyncCustomerChatUX/js | updateChatDdbWithS3Key.jsupdateChatDdbWithS3Key.js |
23:29 23:29 | view |