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
- 20% duplication:
- 56,024 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
- 11,605 duplicated lines
- 1,214 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/aws-amplify-angular (20%)
--> packages/aws-amplify-vue (31%)
2000
6 file pairs
details...
packages/aws-amplify-react (10%)
--> packages/aws-amplify-vue (24%)
1562
3 file pairs
details...
packages/aws-amplify-angular (15%)
--> packages/aws-amplify-react (10%)
1530
4 file pairs
details...
packages/aws-amplify-react-native (23%)
--> packages/aws-amplify-react (9%)
1358
9 file pairs
details...
packages/datastore-storage-adapter (25%)
--> packages/datastore (3%)
398
4 file pairs
details...
packages/amplify-ui-components (1%)
--> packages/amplify-ui (11%)
148
4 file pairs
details...
packages/aws-amplify-react-native (2%)
--> packages/aws-amplify-vue (2%)
138
2 file pairs
details...
packages/amazon-cognito-identity-js (<1%)
--> packages/core (1%)
97
4 file pairs
details...
packages/aws-amplify-angular (<1%)
--> packages/aws-amplify-react-native (<1%)
56
1 file pair
details...
| From Component --> To Component |
Duplicated Lines |
File Pairs | Details |
|---|---|---|---|
| packages/aws-amplify-angular (20%) --> packages/aws-amplify-vue (31%) |
2000 | 6 file pairs | details... |
| packages/aws-amplify-react (10%) --> packages/aws-amplify-vue (24%) |
1562 | 3 file pairs | details... |
| packages/aws-amplify-angular (15%) --> packages/aws-amplify-react (10%) |
1530 | 4 file pairs | details... |
| packages/aws-amplify-react-native (23%) --> packages/aws-amplify-react (9%) |
1358 | 9 file pairs | details... |
| packages/datastore-storage-adapter (25%) --> packages/datastore (3%) |
398 | 4 file pairs | details... |
| packages/amplify-ui-components (1%) --> packages/amplify-ui (11%) |
148 | 4 file pairs | details... |
| packages/aws-amplify-react-native (2%) --> packages/aws-amplify-vue (2%) |
138 | 2 file pairs | details... |
| packages/amazon-cognito-identity-js (<1%) --> packages/core (1%) |
97 | 4 file pairs | details... |
| packages/aws-amplify-angular (<1%) --> packages/aws-amplify-react-native (<1%) |
56 | 1 file pair | details... |
Longest Duplicates
The list of 20 longest duplicates.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 703 | x 2 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactions |  aws-lex-audio.jsaws-lex-audio.js |
15:991 (100%)15:991 (100%) | view |
| 569 | x 2 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.tsx |
15:824 (80%)16:841 (80%) | view |
| 569 | x 2 | packages/aws-amplify-react/src/Interactionspackages/aws-amplify-vue...components/interactions |  aws-lex-audio.tsxaws-lex-audio.js |
16:841 (80%)15:824 (80%) | view |
| 207 | x 2 | packages/aws-amplify-react-native/srcpackages/aws-amplify-react/src/Auth/common |  CountryDialCodes.tscountry-dial-codes.tsx |
2:208 (99%)2:208 (99%) | view |
| 170 | x 2 | packages/aws-amplify-angular/src/assetspackages/aws-amplify-vue/src/assets | countries.tscountries.js |
22:191 (76%)2:171 (77%) | view |
| 69 | x 2 | packages/aws-amplify-react/src/Interactionspackages/aws-amplify-vue...components/interactions | aws-lex-audio.tsxaws-lex-audio.js |
922:1011 (9%)902:991 (9%) | view |
| 69 | x 2 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.tsx |
902:991 (9%)922:1011 (9%) | view |
| 66 | x 2 | packages/aws-amplify-ang...umerian-scene-componentpackages/aws-amplify-ang...umerian-scene-component | sumerian-scene-loading.component.core.tssumerian-scene-loading.component.ioni... |
18:84 (86%)18:84 (91%) | view |
| 64 | x 2 | packages/aws-amplify-react/src/Interactionspackages/aws-amplify-vue...components/interactions | aws-lex-audio.tsxaws-lex-audio.js |
845:920 (9%)826:901 (9%) | view |
| 64 | x 2 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.tsx |
826:901 (9%)845:920 (9%) | view |
| 55 | x 2 | packages/amplify-ui-angular/srcpackages/amplify-ui-angular/src | amplify-module.tsamplify-module.ts |
5:59 (45%)65:119 (45%) | view |
| 52 | x 2 | packages/aws-amplify-react-native/srcpackages/aws-amplify-react/src | AmplifyI18n.tsAmplifyI18n.tsx |
17:68 (22%)16:67 (17%) | view |
| 47 | x 2 | packages/amazon-cognito-...JKBigInteger/LibTomMathpackages/amazon-cognito-...JKBigInteger/LibTomMath |  tommath.ctommath.c |
357:454 (1%)6259:6357 (1%) | view |
| 46 | x 2 | packages/aws-amplify-react-native/srcpackages/aws-amplify-react/src | AmplifyI18n.tsAmplifyI18n.tsx |
167:212 (20%)181:226 (15%) | view |
| 45 | x 2 | packages/aws-amplify-angular/src/assetspackages/aws-amplify-vue/src/assets | countries.tscountries.js |
194:238 (20%)174:218 (20%) | view |
| 44 | x 2 | packages/aws-amplify-react-native/srcpackages/aws-amplify-react/src | AmplifyI18n.tsAmplifyI18n.tsx |
113:160 (19%)130:175 (15%) | view |
| 42 | x 2 | packages/datastore/src/storage/adapterpackages/datastore/src/storage/adapter | AsyncStorageAdapter.tsIndexedDBAdapter.ts |
272:331 (9%)405:465 (6%) | view |
| 35 | x 2 | packages/aws-amplify-react-native/src/Authpackages/aws-amplify-react/src/Auth | SignUp.tsxSignUp.tsx |
110:160 (15%)131:181 (13%) | view |
| 35 | x 2 | packages/aws-amplify-ang.../photo-picker-componentpackages/aws-amplify-ang.../photo-picker-component | photo-picker.component.core.tsphoto-picker.component.ionic.ts |
26:61 (26%)20:55 (85%) | view |
| 30 | x 2 | packages/datastore/src/storage/adapterpackages/datastore/src/storage/adapter | AsyncStorageAdapter.tsIndexedDBAdapter.ts |
423:460 (6%)617:655 (4%) | view |
Duplicated Units
The list of top 20 duplicated units.
| Size | # | Folders | Files | Lines | Code |
|---|---|---|---|---|---|
| 76 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
566:656 566:656 576:673 | view |
| 28 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
910:938 910:938 930:958 | view |
| 24 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
752:780 752:780 769:797 | view |
| 23 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
504:529 504:529 514:539 | view |
| 22 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
479:501 479:501 489:511 | view |
| 21 | x 2 | packages/aws-amplify-react-native/src/API/GraphQLpackages/aws-amplify-react/src/API/GraphQL | Connect.tsxConnect.tsx |
156:183 153:184 | view |
| 25 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
16:41 16:41 17:46 | view |
| 20 | x 2 | packages/datastore/src/storage/adapterpackages/datastore/src/storage/adapter | AsyncStorageAdapter.tsIndexedDBAdapter.ts |
309:332 442:466 | view |
| 19 | x 2 | packages/amazon-cognito-identity-js/srcpackages/amazon-cognito-identity-js/src | CognitoUser.jsCognitoUser.js |
1860:1880 1889:1909 | view |
| 18 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
963:983 963:983 983:1003 | view |
| 24 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
259:284 259:284 265:290 | view |
| 16 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
382:403 382:403 392:413 | view |
| 16 | x 2 | packages/amazon-cognito-identity-js/src/utilspackages/amazon-cognito-identity-js/src/utils | cryptoSecureRandomInt.jscryptoSecureRandomInt.web.js |
29:49 17:37 | view |
| 15 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
168:183 168:183 174:189 | view |
| 14 | x 2 | packages/aws-amplify-react/src/Authpackages/aws-amplify-react/src/Auth | SignIn.tsxRequireNewPassword.tsx |
62:76 48:62 | view |
| 14 | x 2 | packages/aws-amplify-react/src/Authpackages/aws-amplify-react/src/Auth | TOTPSetup.tsxConfirmSignIn.tsx |
36:50 55:70 | view |
| 12 | x 2 | packages/storage/src/providerspackages/geo/src/Providers | AWSS3Provider.tsAmazonLocationServiceProvider.ts |
748:761 260:272 | view |
| 12 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
143:155 143:155 149:161 | view |
| 12 | x 3 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactionspackages/aws-amplify-react/src/Interactions | aws-lex-audio.jsaws-lex-audio.jsaws-lex-audio.tsx |
461:473 461:473 471:483 | view |
| 11 | x 2 | packages/aws-amplify-ang...ts/interactions/chatbotpackages/aws-amplify-vue...components/interactions | aws-lex-audio.jsaws-lex-audio.js |
823:835 823:835 | view |