facebook / fbt
Duplication

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.
Learn more...
Duplication Overall
  • 12% duplication:
    • 13,466 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 1,669 duplicated lines
  • 290 duplicates
system12% (1,669 lines)
Duplication per Extension
js12% (1,669 lines)
Duplication per Component (primary)
packages/babel-plugin-fbt11% (775 lines)
runtime/nonfb41% (706 lines)
demo-app/src9% (61 lines)
auto-param-new-string-helper15% (52 lines)
packages/babel-plugin-standalone11% (44 lines)
runtime/shared2% (31 lines)
flow-types/libdef0% (0 lines)
flow-types/nonfb0% (0 lines)
ROOT0% (0 lines)
website/static0% (0 lines)
website0% (0 lines)
website/src0% (0 lines)
runtime/shared_deps0% (0 lines)
packages/fb-babel-plugin-utils0% (0 lines)
packages/babel-plugin-fbt-runtime0% (0 lines)
packages/gulp-rewrite-flowtyped-modules0% (0 lines)
packages/react-native-fbt0% (0 lines)
packages/gulp-strip-docblock-pragmas0% (0 lines)
packages/fb-tiger-hash0% (0 lines)
packages/default-collection-transform0% (0 lines)
demo-app0% (0 lines)
demo-app/jest0% (0 lines)

Duplication Between Components (50+ lines)

G packages/babel-plugin-fbt packages/babel-plugin-fbt runtime/nonfb runtime/nonfb packages/babel-plugin-fbt--runtime/nonfb 622

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Show more details on duplication between components...
Longest Duplicates
The list of 50 longest duplicates.
See data for all 290 duplicates...
Size#FoldersFilesLinesCode
238 x 2 packages/babel-plugin-fbt/src/translate/CLDR
runtime/nonfb
 65:304 (76%)
65:304 (76%)
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50 x 2 packages/babel-plugin-fbt/src/translate
runtime/nonfb
 12:68 (100%)
12:68 (100%)
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23 x 2 packages/babel-plugin-fbt/src/translate/CLDR
runtime/nonfb
 308:337 (7%)
308:337 (7%)
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15 x 2 demo-app/src/example
demo-app/src/example
 152:167 (4%)
202:217 (4%)
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14 x 2 auto-param-new-string-helper
auto-param-new-string-helper
 191:208 (4%)
299:316 (4%)
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14 x 2 runtime/nonfb
runtime/nonfb
 44:58 (4%)
108:122 (4%)
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14 x 2 packages/babel-plugin-standalone/src
packages/babel-plugin-standalone/src
 184:204 (4%)
234:255 (4%)
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10 x 2 runtime/nonfb
runtime/nonfb
 148:158 (2%)
160:170 (2%)
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10 x 2 runtime/nonfb
runtime/nonfb
 60:70 (2%)
136:146 (2%)
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10 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:31 (71%)
20:31 (71%)
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10 x 2 packages/babel-plugin-fbt/src
packages/babel-plugin-fbt/src
 52:61 (4%)
67:76 (4%)
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9 x 2 runtime/nonfb
runtime/nonfb
 33:42 (2%)
77:86 (2%)
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9 x 2 packages/babel-plugin-fbt/src
packages/babel-plugin-fbt/src
 174:182 (4%)
189:197 (4%)
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8 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:29 (66%)
20:29 (66%)
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8 x 2 packages/babel-plugin-fbt/src
packages/babel-plugin-fbt/src
 175:182 (3%)
205:212 (3%)
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8 x 2 runtime/nonfb
runtime/nonfb
 93:101 (2%)
137:145 (2%)
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8 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:29 (66%)
20:29 (66%)
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8 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:29 (66%)
20:29 (66%)
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8 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:29 (66%)
20:29 (66%)
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8 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:29 (66%)
20:29 (66%)
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8 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:29 (66%)
20:29 (66%)
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8 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:29 (66%)
20:29 (66%)
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8 x 2 runtime/nonfb
runtime/nonfb
 61:69 (2%)
93:101 (2%)
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8 x 2 packages/babel-plugin-standalone/src
packages/babel-plugin-standalone/src
 167:175 (2%)
207:215 (2%)
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8 x 2 packages/babel-plugin-fbt/src/fbt-nodes
packages/babel-plugin-fbt/src/fbt-nodes
 30:37 (10%)
33:40 (4%)
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8 x 2 packages/babel-plugin-fbt/src
packages/babel-plugin-fbt/src
 190:197 (3%)
205:212 (3%)
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8 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:29 (66%)
20:29 (66%)
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8 x 2 packages/babel-plugin-fbt/src/babel-processors
packages/babel-plugin-fbt/src/babel-processors
 45:54 (12%)
78:87 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 43:49 (2%)
177:183 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 87:93 (2%)
107:113 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 60:67 (2%)
160:167 (2%)
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7 x 2 packages/babel-plugin-fbt/src/fbt-nodes
packages/babel-plugin-fbt/src/fbt-nodes
 77:85 (5%)
346:354 (3%)
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7 x 2 packages/babel-plugin-fbt/src
packages/babel-plugin-fbt/src
 118:124 (3%)
133:139 (3%)
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7 x 2 runtime/nonfb
runtime/nonfb
 31:37 (2%)
151:157 (2%)
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7 x 2 demo-app/src/example
demo-app/src/example
 211:218 (2%)
290:296 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 31:37 (2%)
163:169 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 136:143 (2%)
148:155 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 60:67 (2%)
148:155 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 43:49 (2%)
77:83 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 136:143 (2%)
160:167 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 33:39 (2%)
177:183 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 77:83 (2%)
177:183 (2%)
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7 x 2 demo-app/src/example
demo-app/src/example
 164:171 (2%)
234:241 (2%)
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7 x 2 runtime/nonfb
runtime/nonfb
 33:39 (2%)
43:49 (2%)
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7 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:26 (38%)
20:26 (38%)
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7 x 2 packages/babel-plugin-fbt/src
runtime/shared
 66:73 (6%)
61:68 (2%)
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7 x 2 packages/babel-plugin-fbt/src
packages/babel-plugin-fbt/src
 88:94 (3%)
103:109 (3%)
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6 x 2 runtime/nonfb
runtime/nonfb
 34:39 (1%)
108:113 (1%)
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6 x 2 runtime/nonfb/FbtNumber
runtime/nonfb/FbtNumber
 20:27 (60%)
20:27 (60%)
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6 x 2 packages/babel-plugin-fbt/src/translate/CLDR
packages/babel-plugin-fbt/src/translate/CLDR
 20:29 (66%)
20:29 (66%)
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Duplicated Units
The list of top 1 duplicated units.
See data for all 1 unit duplicate
Size#FoldersFilesLinesCode
6 x 2 runtime/nonfb
packages/babel-plugin-fbt/src/translate/CLDR
 312:319 
312:319 
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