facebook / hermes
File Age

File age measurements show the distribution of file ages (days since the first commit) and the recency of file updates (days since the latest commit).

Summary
  • Number of files: 1184
  • Daily file updates (only one update per file and date counted): 7188
  • First update: 2019-07-10
  • Latest update: 2022-03-31
  • Days between first and latest update: 996 (142 weeks, estimated 710 working days)
  • Active days (at least one file change): 697
  • Data:
File Change History Overall
File Age Distribution Overall
Days since first update
  • There are 1,184 files with 223,075 lines of code in files.
    • 898 files that are 366+ days old (178,777 lines of code)
    • 99 files that are 181-365 days old (23,250 lines of code)
    • 148 files that are 91-180 days old (17,148 lines of code)
    • 36 files that are 31-90 days old (3,740 lines of code)
    • 3 files that are 1-30 days old (160 lines of code)
80% | 10% | 7% | 1% | <1%
Legend:
366+
181-365
91-180
31-90
1-30

explore: zoomable circles
Latest Change Distribution Overall
Days since last update
  • There are 1,184 files with 223,075 lines of code in files.
    • 4 files have been last changed 366+ days ago (66 lines of code)
    • 46 files have been last changed 181-365 days ago (10,831 lines of code)
    • 761 files have been last changed 91-180 days ago (91,048 lines of code)
    • 233 files have been last changed 31-90 days ago (65,836 lines of code)
    • 140 files have been last changed 1-30 days ago (55,294 lines of code)
<1% | 4% | 40% | 29% | 24%
Legend:
366+
181-365
91-180
31-90
1-30

explore: zoomable circles
File Change History per File Extension
js, json, h, cpp, c, txt, rs, py, md, java, rst, inc, sh, ts, cc, cmake, toml, patch, cfg, in, plist, gitignore, css, svg, gradle, yml, bat, xml, d, swift, mm, gyp, properties, html, clang-format, cmd, eslintignore, clang-tidy, webmanifest, tsx, podspec, gypi, m, prettierignore
File Age Distribution per Extension
Days since first update
366+
181-365
91-180
31-90
1-30
cpp95% | 3% | <1% | 1% | 0%
h98% | 1% | <1% | <1% | <1%
java100% | 0% | 0% | 0% | 0%
py99% | <1% | 0% | 0% | 0%
js16% | 44% | 37% | 1% | <1%
cmake100% | 0% | 0% | 0% | 0%
inc100% | 0% | 0% | 0% | 0%
css100% | 0% | 0% | 0% | 0%
swift100% | 0% | 0% | 0% | 0%
webmanifest100% | 0% | 0% | 0% | 0%
cfg46% | 53% | 0% | 0% | 0%
in100% | 0% | 0% | 0% | 0%
rs0% | 44% | 45% | 10% | 0%
mm0% | 100% | 0% | 0% | 0%
toml0% | 27% | 58% | 14% | 0%
Latest Change Distribution per Extension
Days since last update
366+
181-365
91-180
31-90
1-30
webmanifest100% | 0% | 0% | 0% | 0%
swift44% | 0% | 55% | 0% | 0%
cfg46% | 53% | 0% | 0% | 0%
js<1% | 45% | 32% | 12% | 9%
toml0% | 5% | 39% | 54% | 0%
cpp0% | 0% | 42% | 31% | 25%
h0% | 0% | 41% | 22% | 35%
java0% | 0% | 92% | 7% | 0%
rs0% | 0% | 19% | 66% | 13%
py0% | 0% | 50% | 12% | 36%
inc0% | 0% | 86% | 13% | 0%
css0% | 0% | 66% | 0% | 33%
cmake0% | 0% | 21% | 78% | 0%
in0% | 0% | 100% | 0% | 0%
mm0% | 0% | 0% | 0% | 100%
File Change History per Logical Decomposition
primary
primary (file age distribution)
Days since first update
366+
181-365
91-180
31-90
1-30
lib96% | 2% | 0% | <1% | 0%
include98% | <1% | 0% | <1% | <1%
unittests96% | <1% | <1% | 2% | 0%
API98% | 0% | 1% | 0% | 0%
tools28% | 40% | 30% | 1% | <1%
utils100% | 0% | 0% | 0% | 0%
website95% | 4% | 0% | 0% | 0%
public100% | 0% | 0% | 0% | 0%
cmake100% | 0% | 0% | 0% | 0%
lldb100% | 0% | 0% | 0% | 0%
npm100% | 0% | 0% | 0% | 0%
android100% | 0% | 0% | 0% | 0%
unsupported0% | 45% | 44% | 10% | 0%
primary (latest change distribution)
Days since last update
366+
181-365
91-180
31-90
1-30
website3% | 0% | 60% | 0% | 36%
tools<1% | 35% | 45% | 11% | 7%
unittests<1% | 0% | 40% | 45% | 13%
utils<1% | 0% | 48% | 13% | 38%
lib0% | <1% | 44% | 27% | 27%
unsupported0% | <1% | 21% | 64% | 13%
include0% | 0% | 41% | 16% | 41%
API0% | 0% | 13% | 58% | 27%
public0% | 0% | 78% | 21% | 0%
lldb0% | 0% | 100% | 0% | 0%
npm0% | 0% | 100% | 0% | 0%
cmake0% | 0% | 18% | 81% | 0%
android0% | 0% | 100% | 0% | 0%
Oldest Files (Top 50)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes# contributors
132 1 30 1010 18 15
Array.cpp
in lib/VM/JSLib
 2924 7 38 1009 50 15
1520 41 17 1009 34 11
Operations.h
in include/hermes/VM
 234 12 17 1009 17 9
index.js
in website/src/pages
 111 1 30 1009 10 11
custom.css
in website/src/css
 51 - 30 1009 9 9
postprocess.js
in website
 4 - 105 1009 3 3
CompilerDriver.cpp
in lib/CompilerDriver
 1696 30 105 1008 53 17
743 31 17 1008 46 10
Passes.cpp
in lib/BCGen/HBC
 711 19 105 1008 15 8
Number.cpp
in lib/VM/JSLib
 549 2 38 1008 23 12
DictPropertyMap.h
in include/hermes/VM
 356 31 23 1008 20 7
TestHelpers.h
in unittests/VMRuntime
 299 11 38 1008 46 10
233 7 23 1008 17 7
DictPropertyMapTest.cpp
in unittests/VMRuntime
 134 1 38 1008 8 4
CompilerDriver.h
in include/hermes/CompilerDriver
 55 - 105 1008 14 10
styles.module.css
in website/src/pages
 26 - 30 1008 7 6
3097 15 17 1007 66 19
hermes.cpp
in API/hermes
 1802 127 17 1007 87 20
Runtime.cpp
in lib/VM
 1734 85 17 1007 133 21
RegExp.cpp
in lib/VM/JSLib
 1357 6 38 1007 36 11
1317 12 24 1007 27 9
Callable.cpp
in lib/VM
 1133 27 20 1007 65 18
Runtime.h
in include/hermes/VM
 1015 76 17 1007 113 20
RuntimeJSONUtils.cpp
in lib/VM/JSLib
 849 25 38 1007 25 9
Callable.h
in include/hermes/VM
 801 48 20 1007 52 15
HiddenClass.h
in include/hermes/VM
 352 25 17 1007 33 10
Function.cpp
in lib/VM/JSLib
 209 1 38 1007 20 10
NativeFrameTest.cpp
in unittests/VMRuntime
 50 1 38 1007 9 4
HermesInternal.cpp
in lib/VM/JSLib
 750 5 38 1005 48 14
JSArray.cpp
in lib/VM
 625 18 20 1005 48 9
GlobalObject.cpp
in lib/VM/JSLib
 510 9 38 1005 30 13
ConsoleHost.cpp
in lib/ConsoleHost
 329 5 38 1005 35 11
Domain.cpp
in lib/VM
 281 12 20 1005 41 10
JSMapImpl.h
in include/hermes/VM
 216 14 23 1005 20 6
JSLib.h
in include/hermes/VM
 45 - 38 1005 8 6
IterationKind.h
in include/hermes/VM
 13 - 105 1005 3 2
HeapSnapshotTest.cpp
in unittests/VMRuntime
 1110 24 31 1004 60 13
441 23 105 1004 25 9
HeapSnapshot.h
in include/hermes/VM
 129 - 105 1004 17 6
MallocGC.cpp
in lib/VM/gcs
 469 30 38 1003 76 10
hbc-attribute.cpp
in tools/hbc-attribute
 425 17 105 1003 27 11
BytecodeFileFormat.h
in include/hermes/BCGen/HBC
 313 5 105 1003 30 12
JSParserImpl.cpp
in lib/Parser
 5371 96 99 1002 68 11
Executor.cpp
in lib/Regex
 1098 38 105 1002 19 7
decorator.h
in API/jsi/jsi
 605 118 59 1002 14 8
320 34 105 1002 10 6
RegexBytecode.h
in include/hermes/Regex
 202 9 105 1002 9 6
JSIDynamic.cpp
in API/jsi/jsi
 156 4 105 1002 4 3
JSIDynamic.h
in API/jsi/jsi
 13 - 105 1002 3 2
Files Not Recently Changed (Top 50)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes# contributors
webmanifest
manifest.webmanifest
in website/static
 31 - 612 612 1 1
Profile.swift
in tools/fuzzers/fuzzilli/profile
 16 - 447 447 1 1
index.js
in utils/promise
 6 - 444 547 2 1
cfg
lit.cfg
in unittests
 13 - 394 394 1 1
01-Promise.js
in lib/InternalBytecode
 400 33 358 392 2 1
posix.js
in tools/node-hermes/nodelib/path
 2 - 298 298 1 1
win32.js
in tools/node-hermes/nodelib/path
 2 - 298 298 1 1
constants.js
in tools/node-hermes/nodelib/internal
 48 - 298 298 1 1
read_file_context.js
in tools/node-hermes/nodelib/internal/fs
 108 6 298 298 1 1
rimraf.js
in tools/node-hermes/nodelib/internal/fs
 203 21 298 298 1 1
streams.js
in tools/node-hermes/nodelib/internal/fs
 384 28 298 298 1 1
promises.js
in tools/node-hermes/nodelib/internal/fs
 1639 107 298 298 1 1
assert.js
in tools/node-hermes/nodelib/internal
 20 3 295 295 1 1
blob.js
in tools/node-hermes/nodelib/internal
 271 18 295 295 1 1
buffer.js
in tools/node-hermes/nodelib/internal
 809 78 295 295 1 1
buffer.js
in tools/node-hermes/nodelib
 880 60 295 298 2 1
path.js
in tools/node-hermes/nodelib
 898 28 295 295 1 1
validators.js
in tools/node-hermes/nodelib/internal
 194 9 275 298 3 1
fs.js
in tools/node-hermes/nodelib
 1768 124 275 304 4 1
console.js
in tools/node-hermes/nodelib
 2 - 267 267 1 1
passthrough.js
in tools/node-hermes/nodelib/internal/streams
 14 2 267 267 1 1
state.js
in tools/node-hermes/nodelib/internal/streams
 26 3 267 267 1 1
timers.js
in tools/node-hermes/nodelib/internal
 29 - 267 267 1 1
sync_write_stream.js
in tools/node-hermes/nodelib/internal/fs
 34 3 267 267 1 1
signal.js
in tools/node-hermes/nodelib/internal/process
 38 3 267 267 1 1
add-abort-signal.js
in tools/node-hermes/nodelib/internal/streams
 39 3 267 267 1 1
stream.js
in tools/node-hermes/nodelib
 47 3 267 267 1 1
lazy_transform.js
in tools/node-hermes/nodelib/internal/streams
 48 5 267 267 1 1
promises.js
in tools/node-hermes/nodelib/stream
 53 3 267 267 1 1
net.js
in tools/node-hermes/nodelib/internal
 56 4 267 267 1 1
legacy.js
in tools/node-hermes/nodelib/internal/streams
 72 9 267 267 1 1
duplex.js
in tools/node-hermes/nodelib/internal/streams
 75 3 267 267 1 1
string_decoder.js
in tools/node-hermes/nodelib
 81 5 267 267 1 1
tty.js
in tools/node-hermes/nodelib
 110 10 267 267 1 1
debuglog.js
in tools/node-hermes/nodelib/internal/util
 125 6 267 267 1 1
transform.js
in tools/node-hermes/nodelib/internal/streams
 137 6 267 267 1 1
utils.js
in tools/node-hermes/nodelib/internal/streams
 141 17 267 267 1 1
end-of-stream.js
in tools/node-hermes/nodelib/internal/streams
 146 2 267 267 1 1
buffer_list.js
in tools/node-hermes/nodelib/internal/streams
 172 13 267 267 1 1
from.js
in tools/node-hermes/nodelib/internal/streams
 194 10 267 267 1 1
timers.js
in tools/node-hermes/nodelib
 200 12 267 267 1 1
stream_base_commons.js
in tools/node-hermes/nodelib/internal
 203 8 267 267 1 1
destroy.js
in tools/node-hermes/nodelib/internal/streams
 278 17 267 267 1 1
writable.js
in tools/node-hermes/nodelib/internal/streams
 567 43 267 267 1 1
is_main_thread.js
in tools/node-hermes/nodelib/internal/bootstrap/switches
 156 9 263 267 2 1
cli_table.js
in tools/node-hermes/nodelib/internal
 33 - 249 249 1 1
types.js
in tools/node-hermes/nodelib/internal/util
 107 18 249 298 4 1
rustfmt.toml
in unsupported/juno
 5 - 248 282 2 1
cfg
lit.cfg
in unsupported/juno/lit
 15 - 203 203 1 1
Cargo.toml
in unsupported/juno
 2 - 199 282 7 2
Most Recently Created Files (Top 50)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes# contributors
AddComments.js
in tools/hermes-parser/js/hermes-transform/src/transform/mutations
 34 2 17 17 1 1
WeakRefSlot.h
in include/hermes/VM
 71 10 24 24 1 1
WeakRoot.h
in include/hermes/VM
 55 7 16 24 2 1
BCP47Parser.cpp
in lib/Platform/Intl
 334 26 20 31 2 2
BCP47ParserTest.cpp
in unittests/PlatformIntl
 114 - 31 31 1 1
BCP47Parser.h
in include/hermes/Platform/Intl
 31 - 20 31 2 2
lexical_environment.rs
in unsupported/juno/crates/juno_eval/src/eval
 116 - 35 35 1 2
script.rs
in unsupported/juno/crates/juno_eval/src/eval
 47 - 35 35 1 2
environment_record.rs
in unsupported/juno/crates/juno_eval/src/eval
 300 11 35 36 2 3
reference.rs
in unsupported/juno/crates/juno_eval/src/eval
 185 - 35 36 2 2
runtime.rs
in unsupported/juno/crates/juno_eval/src/eval
 181 1 35 36 2 3
jsvalue.rs
in unsupported/juno/crates/juno_eval/src/eval
 99 2 35 36 2 2
jsobject.rs
in unsupported/juno/crates/juno_eval/src/eval
 88 2 35 36 2 3
operations.rs
in unsupported/juno/crates/juno_eval/src/eval
 86 - 35 36 2 2
completion_record.rs
in unsupported/juno/crates/juno_eval/src/eval
 50 1 36 36 1 2
function.rs
in unsupported/juno/crates/juno_eval/src/eval
 35 - 35 36 2 3
execution_context.rs
in unsupported/juno/crates/juno_eval/src/eval
 34 - 35 36 2 2
addr.rs
in unsupported/juno/crates/juno_eval/src/eval
 26 1 36 36 1 2
mod.rs
in unsupported/juno/crates/juno_eval/src/eval
 20 - 35 36 2 2
lib.rs
in unsupported/juno/crates/juno_eval/src
 13 - 35 36 2 2
Cargo.toml
in unsupported/juno/crates/juno_eval
 9 - 36 36 1 1
continue.js
in unsupported/juno/lit/juno/sema
 21 2 15 56 2 1
break.js
in unsupported/juno/lit/juno/sema
 19 - 56 56 1 1
continue-error.js
in unsupported/juno/lit/juno/sema
 15 - 56 56 1 1
context.rs
in unsupported/juno/crates/juno_ast/src
 457 17 64 64 1 1
308 23 23 64 3 2
CallSite.cpp
in lib/VM/JSLib
 206 1 38 64 2 2
JSCallSite.h
in include/hermes/VM
 33 - 38 64 2 2
build.rs
in unsupported/juno/crates/lit
 20 1 64 64 1 1
lib.rs
in unsupported/juno/crates/lit/src
 13 - 64 64 1 1
Cargo.toml
in unsupported/juno/crates/lit
 8 - 64 64 1 1
435 2 65 65 1 1
genPredicateFunctions.js
in tools/hermes-parser/js/scripts
 179 - 70 70 1 1
predicates.js
in tools/hermes-parser/js/hermes-estree/src
 89 17 70 70 1 1
parse.js
in tools/hermes-parser/js/hermes-parser/__test_utils__
 26 2 17 70 2 2
loc.js
in tools/hermes-parser/js/hermes-parser/__test_utils__
 19 1 70 70 1 1
PlatformUnicodeLite.cpp
in lib/Platform/Unicode
 37 4 71 71 1 1
SamplingProfilerPosixTest.cpp
in unittests/VMRuntime
 45 2 38 72 2 2
42 1 72 72 1 1
genTransformReplaceNodeTypes.js
in tools/hermes-parser/js/scripts
 39 - 92 94 2 1
Referencer.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager/referencer
 641 - 24 101 5 2
ScopeBase.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager/scope
 340 3 70 101 3 1
TypeVisitor.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager/referencer
 243 2 24 101 3 2
ScopeManager.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager
 198 4 101 101 1 1
TimerStats.cpp
in API/hermes
 166 15 101 101 1 1
PatternVisitor.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager/referencer
 155 1 28 101 4 1
ClassVisitor.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager/referencer
 108 1 101 101 1 1
Reference.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager/referencer
 90 2 101 101 1 1
VisitorBase.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager/referencer
 69 2 101 101 1 1
ExportVisitor.js
in tools/hermes-parser/js/hermes-eslint/src/scope-manager/referencer
 53 2 101 101 1 1
Most Recently Changed Files (Top 50)
File# lines# unitslast modified
(days ago)		created
(days ago)		# changes# contributors
HadesGC.cpp
in lib/VM/gcs
 2254 178 15 710 169 8
testsuite_skiplist.py
in utils/testsuite
 1727 - 15 654 35 13
resolver.rs
in unsupported/juno/crates/juno/src/sema
 1395 42 15 162 7 3
Intl.cpp
in lib/VM/JSLib
 1377 39 15 695 20 8
PlatformIntlApple.mm
in lib/Platform/Intl
 508 19 15 185 10 4
kind.rs
in unsupported/juno/crates/juno_ast/src
 451 2 15 113 3 2
PlatformIntl.h
in include/hermes/Platform/Intl
 137 8 15 695 6 4
continue.js
in unsupported/juno/lit/juno/sema
 21 2 15 56 2 1
HadesGC.h
in include/hermes/VM
 496 31 16 710 110 6
hermes_parser.rs
in unsupported/juno/crates/hermes/src/parser
 293 8 16 199 6 4
json.rs
in unsupported/juno/crates/juno_support/src
 287 8 16 113 3 3
InsertStatement.js
in tools/hermes-parser/js/hermes-transform/src/transform/mutations
 84 2 16 162 6 3
WeakRoot.h
in include/hermes/VM
 55 7 16 24 2 1
arrayUtils.js
in tools/hermes-parser/js/hermes-transform/src/transform/mutations/utils
 36 4 16 160 3 3
3097 15 17 1007 66 19
hermes.cpp
in API/hermes
 1802 127 17 1007 87 20
Runtime.cpp
in lib/VM
 1734 85 17 1007 133 21
1520 41 17 1009 34 11
Runtime.h
in include/hermes/VM
 1015 76 17 1007 113 20
StackTracesTreeTest.cpp
in unittests/VMRuntime
 805 33 17 745 24 9
OperationsTest.cpp
in unittests/VMRuntime
 772 - 17 913 11 4
743 31 17 1008 46 10
HiddenClassTest.cpp
in unittests/VMRuntime
 365 - 17 977 12 5
HiddenClass.h
in include/hermes/VM
 352 25 17 1007 33 10
TransformContext.js
in tools/hermes-parser/js/hermes-transform/src/transform
 341 4 17 162 12 3
Operations.h
in include/hermes/VM
 234 12 17 1009 17 9
199 2 17 986 26 13
HermesToESTreeAdapter.js
in tools/hermes-parser/js/hermes-parser/src
 178 1 17 463 12 5
comments.js
in tools/hermes-parser/js/hermes-transform/src/transform/comments
 152 15 17 154 4 3
BytecodeProviderFromSrc.h
in include/hermes/BCGen/HBC
 136 15 17 983 17 10
eval.cpp
in lib/VM/JSLib
 110 3 17 947 15 7
getTransformedAST.js
in tools/hermes-parser/js/hermes-transform/src/transform
 84 1 17 162 10 3
DecoratedObject.h
in include/hermes/VM
 70 5 17 720 13 5
CompileJS.cpp
in API/hermes
 70 4 17 913 7 4
68 2 17 892 5 5
IRInstrumentationTest.cpp
in unittests/VMRuntime
 52 4 17 785 5 5
MutationContext.js
in tools/hermes-parser/js/hermes-transform/src/transform
 46 1 17 162 6 3
AdditionalSlots.h
in unittests/VMRuntime
 45 2 17 380 6 2
Predefined.h
in include/hermes/VM
 42 4 17 969 6 5
CompileJS.h
in API/hermes
 39 - 17 913 5 3
CloneCommentsTo.js
in tools/hermes-parser/js/hermes-transform/src/transform/mutations
 35 2 17 153 3 3
AddComments.js
in tools/hermes-parser/js/hermes-transform/src/transform/mutations
 34 2 17 17 1 1
Runtime-inline.h
in include/hermes/VM
 33 2 17 913 7 4
parse.js
in tools/hermes-parser/js/hermes-parser/__test_utils__
 26 2 17 70 2 2
IR.h
in include/hermes/IR
 1399 211 18 954 27 10
JSObject.h
in include/hermes/VM
 1134 45 18 981 53 10
SynthTrace.cpp
in API/hermes
 747 41 18 987 31 11
GCBase.h
in include/hermes/VM
 680 35 18 996 114 13
JSONParser.h
in include/hermes/Parser
 495 42 18 987 8 7
HermesValue.h
in include/hermes/VM
 389 51 18 981 25 10