facebook / jest
File Size

The distribution of size of files (measured in lines of code).

Intro
  • File size measurements show the distribution of size of files.
  • Files are classified in four categories based on their size (lines of code): 1-100 (very small files), 101-200 (small files), 201-500 (medium size files), 501-1000 (long files), 1001+(very long files).
  • It is a good practice to keep files small. Long files may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.
Learn more...
File Size Overall
  • There are 381 files with 42,592 lines of code.
    • 3 very long files (3,999 lines of code)
    • 9 long files (6,575 lines of code)
    • 43 medium size files (12,948 lines of codeclsfd_ftr_w_mp_ins)
    • 64 small files (8,961 lines of code)
    • 262 very small files (10,109 lines of code)
9% | 15% | 30% | 21% | 23%
Legend:
1001+
501-1000
201-500
101-200
1-100


explore: zoomable circles | sunburst | 3D view
File Size per Extension
1001+
501-1000
201-500
101-200
1-100
ts10% | 17% | 29% | 19% | 23%
js0% | 0% | 29% | 38% | 31%
css0% | 0% | 88% | 0% | 11%
yaml0% | 0% | 0% | 0% | 100%
toml0% | 0% | 0% | 0% | 100%
xml0% | 0% | 0% | 0% | 100%
File Size per Logical Decomposition
primary
1001+
501-1000
201-500
101-200
1-100
packages/jest-runtime96% | 0% | 0% | 0% | 3%
packages/jest-config44% | 0% | 13% | 16% | 25%
packages/expect30% | 25% | 31% | 7% | 4%
packages/jest-mock0% | 100% | 0% | 0% | 0%
packages/jest-haste-map0% | 31% | 41% | 10% | 16%
packages/jest-transform0% | 72% | 0% | 0% | 27%
packages/jest-resolve0% | 57% | 0% | 20% | 21%
packages/jest-cli0% | 62% | 0% | 21% | 15%
packages/diff-sequences0% | 83% | 0% | 16% | 0%
packages/jest-jasmine20% | 20% | 8% | 37% | 33%
packages/jest-core0% | 15% | 42% | 7% | 34%
packages/jest-snapshot0% | 0% | 82% | 5% | 11%
packages/jest-circus0% | 0% | 55% | 31% | 13%
packages/jest-reporters0% | 0% | 34% | 44% | 20%
packages/jest-types0% | 0% | 83% | 0% | 16%
packages/jest-diff0% | 0% | 49% | 37% | 12%
website/src0% | 0% | 43% | 21% | 34%
packages/jest-runner0% | 0% | 79% | 0% | 20%
website/static0% | 0% | 98% | 0% | 1%
packages/jest-matcher-utils0% | 0% | 76% | 0% | 23%
packages/pretty-format0% | 0% | 30% | 29% | 40%
packages/jest-fake-timers0% | 0% | 77% | 21% | <1%
packages/expect-utils0% | 0% | 63% | 35% | <1%
packages/jest-message-util0% | 0% | 98% | 0% | 1%
packages/babel-plugin-jest-hoist0% | 0% | 100% | 0% | 0%
website0% | 0% | 77% | 0% | 22%
packages/babel-jest0% | 0% | 99% | 0% | <1%
packages/jest-worker0% | 0% | 0% | 78% | 21%
scripts0% | 0% | 0% | 72% | 27%
packages/jest-console0% | 0% | 0% | 73% | 26%
packages/test-utils0% | 0% | 0% | 63% | 36%
packages/jest-resolve-dependencies0% | 0% | 0% | 100% | 0%
packages/jest-environment-jsdom0% | 0% | 0% | 100% | 0%
packages/jest-environment-node0% | 0% | 0% | 100% | 0%
packages/jest-repl0% | 0% | 0% | 43% | 56%
packages/jest-validate0% | 0% | 0% | 23% | 76%
packages/jest-docblock0% | 0% | 0% | 100% | 0%
packages/jest-watcher0% | 0% | 0% | 0% | 100%
packages/jest-util0% | 0% | 0% | 0% | 100%
packages/jest-each0% | 0% | 0% | 0% | 100%
ROOT0% | 0% | 0% | 0% | 100%
packages/jest-changed-files0% | 0% | 0% | 0% | 100%
packages/jest-environment0% | 0% | 0% | 0% | 100%
packages/jest-expect0% | 0% | 0% | 0% | 100%
packages/jest-create-cache-key-function0% | 0% | 0% | 0% | 100%
packages/jest-source-map0% | 0% | 0% | 0% | 100%
packages/jest-get-type0% | 0% | 0% | 0% | 100%
packages/jest-leak-detector0% | 0% | 0% | 0% | 100%
packages/jest-schemas0% | 0% | 0% | 0% | 100%
packages/jest-phabricator0% | 0% | 0% | 0% | 100%
packages/jest-globals0% | 0% | 0% | 0% | 100%
packages/jest-serializer0% | 0% | 0% | 0% | 100%
packages/jest-regex-util0% | 0% | 0% | 0% | 100%
packages/jest0% | 0% | 0% | 0% | 100%
packages/babel-preset-jest0% | 0% | 0% | 0% | 100%
Longest Files (Top 50)
File# lines# units
index.ts
in packages/jest-runtime/src
 1950 58
normalize.ts
in packages/jest-config/src
 1048 27
spyMatchers.ts
in packages/expect/src
 1001 30
index.ts
in packages/jest-mock/src
 978 30
index.ts
in packages/jest-haste-map/src
 869 22
matchers.ts
in packages/expect/src
 821 19
ScriptTransformer.ts
in packages/jest-transform/src
 807 25
resolver.ts
in packages/jest-resolve/src
 726 28
args.ts
in packages/jest-cli/src/cli
 680 1
index.ts
in packages/diff-sequences/src
 602 1
Env.ts
in packages/jest-jasmine2/src/jasmine
 586 62
watch.ts
in packages/jest-core/src
 506 1
index.ts
in packages/jest-matcher-utils/src
 466 3
index.ts
in packages/pretty-format/src
 465 19
Config.ts
in packages/jest-types/src
 449 -
legacyFakeTimers.ts
in packages/jest-fake-timers/src
 442 17
index.ts
in packages/jest-snapshot/src
 430 7
CoverageReporter.ts
in packages/jest-reporters/src
 423 6
TestScheduler.ts
in packages/jest-core/src
 423 10
cleanupSemantic.ts
in packages/jest-diff/src
 395 8
toThrowMatchers.ts
in packages/expect/src
 394 3
utils.ts
in packages/jest-circus/src
 393 7
index.js
in website/src/pages
 383 6
index.ts
in packages/expect/src
 374 4
utils.ts
in packages/expect-utils/src
 321 1
SearchSource.ts
in packages/jest-core/src
 316 18
index.ts
in packages/jest-message-util/src
 313 2
index.ts
in packages/jest-config/src
 312 2
runTest.ts
in packages/jest-runner/src
 310 2
index.ts
in packages/babel-plugin-jest-hoist/src
 309 8
InlineSnapshots.ts
in packages/jest-snapshot/src
 295 4
utils.ts
in packages/jest-reporters/src
 288 -
custom.css
in website/static/css
 277 -
276 2
jest.css
in website/static/css
 268 -
watchman.ts
in packages/jest-haste-map/src/crawlers
 265 6
printSnapshot.ts
in packages/jest-snapshot/src
 261 -
runJest.ts
in packages/jest-core/src
 256 2
asymmetricMatchers.ts
in packages/expect/src
 250 29
State.ts
in packages/jest-snapshot/src
 248 3
jestAdapterInit.ts
in packages/jest-circus/src/legacy-code-todo-rewrite
 245 1
joinAlignedDiffs.ts
in packages/jest-diff/src
 245 -
index.ts
in packages/jest-core/src/cli
 238 2
Spec.ts
in packages/jest-jasmine2/src/jasmine
 238 19
index.ts
in packages/jest-runner/src
 237 5
index.ts
in packages/babel-jest/src
 234 12
eventHandler.ts
in packages/jest-circus/src
 226 -
ModuleMap.ts
in packages/jest-haste-map/src
 224 9
NodeWatcher.js
in packages/jest-haste-map/src/watchers
 219 18
legacyCSS.css
in website/src/components/v1
 213 -
Files With Most Units (Top 50)
File# lines# units
Env.ts
in packages/jest-jasmine2/src/jasmine
 586 62
index.ts
in packages/jest-runtime/src
 1950 58
index.ts
in packages/jest-mock/src
 978 30
spyMatchers.ts
in packages/expect/src
 1001 30
asymmetricMatchers.ts
in packages/expect/src
 250 29
resolver.ts
in packages/jest-resolve/src
 726 28
normalize.ts
in packages/jest-config/src
 1048 27
ScriptTransformer.ts
in packages/jest-transform/src
 807 25
index.ts
in packages/jest-haste-map/src
 869 22
index.ts
in packages/pretty-format/src
 465 19
Spec.ts
in packages/jest-jasmine2/src/jasmine
 238 19
Suite.ts
in packages/jest-jasmine2/src/jasmine
 170 19
matchers.ts
in packages/expect/src
 821 19
NodeWatcher.js
in packages/jest-haste-map/src/watchers
 219 18
SearchSource.ts
in packages/jest-core/src
 316 18
jasmineLight.ts
in packages/jest-jasmine2/src/jasmine
 112 18
legacyFakeTimers.ts
in packages/jest-fake-timers/src
 442 17
WatchmanWatcher.js
in packages/jest-haste-map/src/watchers
 206 14
JsApiReporter.ts
in packages/jest-jasmine2/src/jasmine
 87 14
SpyStrategy.ts
in packages/jest-jasmine2/src/jasmine
 63 13
index.ts
in packages/babel-jest/src
 234 12
VerboseReporter.ts
in packages/jest-reporters/src
 145 11
_landingAnimation.js
in website/src/pages/animations
 187 10
TestScheduler.ts
in packages/jest-core/src
 423 10
jasmineAsyncInstall.ts
in packages/jest-jasmine2/src
 187 10
CallTracker.ts
in packages/jest-jasmine2/src/jasmine
 52 10
threadChild.ts
in packages/jest-worker/src/workers
 118 9
processChild.ts
in packages/jest-worker/src/workers
 116 9
ModuleMap.ts
in packages/jest-haste-map/src
 224 9
FailedTestsInteractiveMode.ts
in packages/jest-core/src
 149 9
treeProcessor.ts
in packages/jest-jasmine2/src
 69 9
spyRegistry.ts
in packages/jest-jasmine2/src/jasmine
 169 9
jasmineUtils.ts
in packages/expect-utils/src
 180 9
Status.ts
in packages/jest-reporters/src
 178 8
fileWalkers.ts
in packages/jest-resolve/src
 90 8
createProcessObject.ts
in packages/jest-util/src
 83 8
index.ts
in packages/babel-plugin-jest-hoist/src
 309 8
getAlignedDiffs.ts
in packages/jest-diff/src
 156 8
cleanupSemantic.ts
in packages/jest-diff/src
 395 8
index.js
in packages/diff-sequences/perf
 119 7
test.js
in packages/jest-worker/src/__performance_tests__
 135 7
utils.ts
in packages/jest-circus/src
 393 7
FSEventsWatcher.ts
in packages/jest-haste-map/src/watchers
 143 7
SnapshotInteractiveMode.ts
in packages/jest-core/src
 203 7
index.ts
in packages/jest-snapshot/src
 430 7
index.ts
in packages/jest-diff/src
 162 7
index.js
in website/src/pages
 383 6
index.ts
in packages/jest-docblock/src
 103 6
Farm.ts
in packages/jest-worker/src
 146 6
ChildProcessWorker.ts
in packages/jest-worker/src/workers
 192 6
Files With Long Lines (Top 26)

There are 26 files with lines longer than 120 characters. In total, there are 44 long lines.

File# lines# units# long lines
index.ts
in packages/jest-runtime/src
 1950 58 7
Descriptions.ts
in packages/jest-config/src
 92 - 5
eventHandler.ts
in packages/jest-circus/src
 226 - 3
Env.ts
in packages/jest-jasmine2/src/jasmine
 586 62 3
docusaurusTheme.css
in website/src/css
 63 - 2
helpers.ts
in packages/jest-runtime/src
 55 - 2
utils.ts
in packages/jest-circus/src
 393 7 2
enhanceUnexpectedTokenMessage.ts
in packages/jest-transform/src
 48 2 2
276 2 1
help.js
in website/src/pages
 73 1 1
bundleTs.js
in scripts
 155 - 1
build.js
in scripts
 110 4 1
index.ts
in packages/jest-matcher-utils/src
 466 3 1
args.ts
in packages/jest-cli/src/cli
 680 1 1
index.ts
in packages/jest-circus/src
 170 - 1
utils.ts
in packages/jest-resolve/src
 152 1 1
ScriptTransformer.ts
in packages/jest-transform/src
 807 25 1
runTest.ts
in packages/jest-runner/src
 310 2 1
requireOrImportModule.ts
in packages/jest-util/src
 45 1 1
createProcessObject.ts
in packages/jest-util/src
 83 8 1
runJest.ts
in packages/jest-core/src
 256 2 1
SnapshotResolver.ts
in packages/jest-snapshot/src
 102 6 1
validation.ts
in packages/jest-each/src
 76 - 1
readConfigFileAndSetRootDir.ts
in packages/jest-config/src
 91 2 1
Deprecated.ts
in packages/jest-config/src
 72 - 1
normalize.ts
in packages/jest-config/src
 1048 27 1
Correlations

File Size vs. Commits (all time): 382 points

packages/jest-reporters/src/GitHubActionsReporter.ts x: 1 commits (all time) y: 40 lines of code packages/jest-reporters/src/index.ts x: 10 commits (all time) y: 36 lines of code packages/jest-cli/src/cli/args.ts x: 32 commits (all time) y: 680 lines of code packages/jest-cli/src/init/questions.ts x: 6 commits (all time) y: 50 lines of code packages/jest-config/src/Descriptions.ts x: 10 commits (all time) y: 92 lines of code packages/jest-environment/src/index.ts x: 43 commits (all time) y: 88 lines of code packages/jest-mock/src/index.ts x: 42 commits (all time) y: 978 lines of code packages/jest-config/src/Defaults.ts x: 23 commits (all time) y: 82 lines of code packages/jest-config/src/ValidConfig.ts x: 32 commits (all time) y: 159 lines of code packages/jest-transform/src/ScriptTransformer.ts x: 61 commits (all time) y: 807 lines of code packages/expect-utils/src/jasmineUtils.ts x: 2 commits (all time) y: 180 lines of code packages/expect/src/spyMatchers.ts x: 22 commits (all time) y: 1001 lines of code packages/jest-fake-timers/src/legacyFakeTimers.ts x: 19 commits (all time) y: 442 lines of code packages/jest-core/src/TestNamePatternPrompt.ts x: 8 commits (all time) y: 21 lines of code packages/jest-watcher/src/PatternPrompt.ts x: 11 commits (all time) y: 44 lines of code packages/jest-environment-node/src/index.ts x: 29 commits (all time) y: 116 lines of code packages/jest-config/src/index.ts x: 37 commits (all time) y: 312 lines of code packages/jest-config/src/normalize.ts x: 72 commits (all time) y: 1048 lines of code packages/jest-config/src/parseShardPair.ts x: 1 commits (all time) y: 31 lines of code packages/jest-core/src/runJest.ts x: 37 commits (all time) y: 256 lines of code packages/jest-types/src/Config.ts x: 66 commits (all time) y: 449 lines of code website/docusaurus.config.js x: 13 commits (all time) y: 276 lines of code website/src/pages/index.js x: 7 commits (all time) y: 383 lines of code packages/jest-runtime/src/index.ts x: 152 commits (all time) y: 1950 lines of code packages/jest-core/src/SearchSource.ts x: 24 commits (all time) y: 316 lines of code packages/jest-jasmine2/src/reporter.ts x: 11 commits (all time) y: 141 lines of code packages/jest-each/src/table/array.ts x: 12 commits (all time) y: 72 lines of code packages/jest-circus/src/formatNodeAssertErrors.ts x: 20 commits (all time) y: 168 lines of code packages/jest-jasmine2/src/assertionErrorMessage.ts x: 14 commits (all time) y: 122 lines of code packages/babel-plugin-jest-hoist/src/index.ts x: 26 commits (all time) y: 309 lines of code packages/expect/src/asymmetricMatchers.ts x: 22 commits (all time) y: 250 lines of code packages/expect/src/extractExpectedAssertionsErrors.ts x: 5 commits (all time) y: 64 lines of code packages/expect/src/index.ts x: 29 commits (all time) y: 374 lines of code packages/expect/src/matchers.ts x: 36 commits (all time) y: 821 lines of code packages/expect/src/print.ts x: 10 commits (all time) y: 107 lines of code packages/expect/src/toThrowMatchers.ts x: 17 commits (all time) y: 394 lines of code packages/jest-circus/src/legacy-code-todo-rewrite/jestAdapterInit.ts x: 39 commits (all time) y: 245 lines of code packages/jest-circus/src/utils.ts x: 34 commits (all time) y: 393 lines of code packages/jest-cli/src/cli/index.ts x: 20 commits (all time) y: 119 lines of code packages/jest-cli/src/init/generateConfigFile.ts x: 7 commits (all time) y: 76 lines of code packages/jest-cli/src/init/modifyPackageJson.ts x: 2 commits (all time) y: 17 lines of code packages/jest-config/src/constants.ts x: 7 commits (all time) y: 18 lines of code packages/jest-config/src/utils.ts x: 19 commits (all time) y: 102 lines of code packages/jest-console/src/getConsoleOutput.ts x: 12 commits (all time) y: 47 lines of code packages/jest-core/src/FailedTestsInteractiveMode.ts x: 2 commits (all time) y: 149 lines of code packages/jest-core/src/SnapshotInteractiveMode.ts x: 9 commits (all time) y: 203 lines of code packages/jest-core/src/TestScheduler.ts x: 34 commits (all time) y: 423 lines of code packages/jest-core/src/getNoTestFoundFailed.ts x: 6 commits (all time) y: 18 lines of code packages/jest-core/src/getNoTestFoundVerbose.ts x: 10 commits (all time) y: 63 lines of code packages/jest-core/src/lib/activeFiltersMessage.ts x: 2 commits (all time) y: 24 lines of code packages/jest-core/src/lib/handleDeprecationWarnings.ts x: 3 commits (all time) y: 31 lines of code packages/jest-core/src/lib/logDebugMessages.ts x: 3 commits (all time) y: 14 lines of code packages/jest-core/src/watch.ts x: 24 commits (all time) y: 506 lines of code packages/jest-diff/src/diffLines.ts x: 10 commits (all time) y: 160 lines of code packages/jest-diff/src/index.ts x: 22 commits (all time) y: 162 lines of code packages/jest-diff/src/joinAlignedDiffs.ts x: 9 commits (all time) y: 245 lines of code packages/jest-diff/src/printDiffs.ts x: 14 commits (all time) y: 46 lines of code packages/jest-docblock/src/index.ts x: 8 commits (all time) y: 103 lines of code packages/jest-each/src/table/interpolation.ts x: 4 commits (all time) y: 68 lines of code packages/jest-fake-timers/src/modernFakeTimers.ts x: 6 commits (all time) y: 123 lines of code packages/jest-haste-map/src/ModuleMap.ts x: 16 commits (all time) y: 224 lines of code packages/jest-haste-map/src/crawlers/node.ts x: 20 commits (all time) y: 206 lines of code packages/jest-haste-map/src/getMockName.ts x: 4 commits (all time) y: 9 lines of code packages/jest-haste-map/src/index.ts x: 51 commits (all time) y: 869 lines of code packages/jest-haste-map/src/watchers/NodeWatcher.js x: 2 commits (all time) y: 219 lines of code packages/jest-haste-map/src/worker.ts x: 9 commits (all time) y: 94 lines of code packages/jest-jasmine2/src/expectationResultFactory.ts x: 10 commits (all time) y: 79 lines of code packages/jest-jasmine2/src/jasmine/Env.ts x: 31 commits (all time) y: 586 lines of code packages/jest-jasmine2/src/jasmine/spyRegistry.ts x: 8 commits (all time) y: 169 lines of code packages/jest-jasmine2/src/queueRunner.ts x: 12 commits (all time) y: 77 lines of code packages/jest-leak-detector/src/index.ts x: 16 commits (all time) y: 49 lines of code packages/jest-matcher-utils/src/index.ts x: 32 commits (all time) y: 466 lines of code packages/jest-message-util/src/index.ts x: 32 commits (all time) y: 313 lines of code packages/jest-regex-util/src/index.ts x: 4 commits (all time) y: 18 lines of code packages/jest-repl/src/cli/runtime-cli.ts x: 15 commits (all time) y: 113 lines of code packages/jest-reporters/src/BaseReporter.ts x: 2 commits (all time) y: 37 lines of code packages/jest-reporters/src/DefaultReporter.ts x: 7 commits (all time) y: 175 lines of code packages/jest-reporters/src/NotifyReporter.ts x: 7 commits (all time) y: 103 lines of code packages/jest-reporters/src/Status.ts x: 11 commits (all time) y: 178 lines of code packages/jest-reporters/src/SummaryReporter.ts x: 5 commits (all time) y: 197 lines of code packages/jest-reporters/src/VerboseReporter.ts x: 5 commits (all time) y: 145 lines of code packages/jest-reporters/src/getResultHeader.ts x: 4 commits (all time) y: 37 lines of code packages/jest-reporters/src/getSnapshotStatus.ts x: 3 commits (all time) y: 58 lines of code packages/jest-reporters/src/getSnapshotSummary.ts x: 4 commits (all time) y: 121 lines of code packages/jest-reporters/src/utils.ts x: 16 commits (all time) y: 288 lines of code packages/jest-resolve/src/resolver.ts x: 11 commits (all time) y: 726 lines of code packages/jest-resolve/src/utils.ts x: 6 commits (all time) y: 152 lines of code packages/jest-runner/src/runTest.ts x: 66 commits (all time) y: 310 lines of code packages/jest-runner/src/testWorker.ts x: 21 commits (all time) y: 93 lines of code packages/jest-runtime/src/helpers.ts x: 12 commits (all time) y: 55 lines of code packages/jest-snapshot/src/index.ts x: 44 commits (all time) y: 430 lines of code packages/jest-snapshot/src/printSnapshot.ts x: 21 commits (all time) y: 261 lines of code packages/jest-snapshot/src/utils.ts x: 28 commits (all time) y: 204 lines of code packages/jest-transform/src/shouldInstrument.ts x: 13 commits (all time) y: 89 lines of code packages/jest-util/src/createProcessObject.ts x: 14 commits (all time) y: 83 lines of code packages/jest-validate/src/utils.ts x: 9 commits (all time) y: 44 lines of code packages/jest-validate/src/validateCLIOptions.ts x: 17 commits (all time) y: 96 lines of code packages/jest-validate/src/warnings.ts x: 8 commits (all time) y: 28 lines of code packages/jest-worker/src/index.ts x: 21 commits (all time) y: 107 lines of code packages/jest-worker/src/workers/ChildProcessWorker.ts x: 20 commits (all time) y: 192 lines of code packages/jest-worker/src/workers/NodeThreadsWorker.ts x: 28 commits (all time) y: 176 lines of code packages/jest-worker/src/workers/processChild.ts x: 12 commits (all time) y: 116 lines of code packages/jest-worker/src/workers/threadChild.ts x: 11 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