• 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.

• There are 5,244 files with 1,050,636 lines of code.
• 199 very long files (411,668 lines of code)
• 281 long files (194,697 lines of code)
• 704 medium size files (217,839 lines of codeclsfd_ftr_w_mp_ins)
• 794 small files (114,191 lines of code)
• 3,266 very small files (112,241 lines of code)

There are 140 files with lines longer than 120 characters. In total, there are 3281 long lines.

File	# lines	# units	# long lines
native-func-caller.h in hphp/runtime/vm	2927	4	1101
syntax_generated.rs in hphp/hack/src/parser	5589	170	302
verify_smart_constructors_generated.rs in hphp/hack/src/parser	1254	175	226
pair_smart_constructors_generated.rs in hphp/hack/src/parser	582	176	224
decl_mode_smart_constructors_generated.rs in hphp/hack/src/parser	562	175	216
direct_decl_smart_constructors_generated.rs in hphp/hack/src/decl	563	178	172
syntax_type.rs in hphp/hack/src/parser	192	-	113
smart_constructors_wrappers.rs in hphp/hack/src/parser	577	177	109
cmake cotire.cmake in CMake	3388	-	99
positioned_smart_constructors.rs in hphp/hack/src/parser	582	176	92
syntax_smart_constructors_generated.rs in hphp/hack/src/parser	729	173	62
smart_constructors_generated.rs in hphp/hack/src/parser	206	3	55
gd_interpolation.cpp in hphp/runtime/ext/gd/libgd	1949	49	42
aast.rs in hphp/hack/src/oxidized_by_ref/gen	1993	-	40
cmake FindBoost.cmake in CMake	2290	-	38
cmake HPHPCompiler.cmake in CMake	574	-	28
cmake HHVMExtensionConfig.cmake in CMake	1000	-	20
ml lints_errors.ml in hphp/hack/src/lints	341	-	15
ml serverHover.ml in hphp/hack/src/server	468	-	14
ml typing_error.ml in hphp/hack/src/errors	7469	-	14
hash_haval.cpp in hphp/runtime/ext/hash	371	14	12
gd.cpp in hphp/runtime/ext/gd/libgd	2480	74	12
gd_jpeg.cpp in hphp/runtime/ext/gd/libgd	484	21	12
cmake HPHPFunctions.cmake in CMake	531	-	7
gd_gd2.cpp in hphp/runtime/ext/gd/libgd	655	12	7
hhi builtins_intl.hhi in hphp/hack/hhi/stdlib	886	-	7
hhi builtins_image.hhi in hphp/hack/hhi/stdlib	247	-	7
syntax_error.rs in hphp/hack/src/parser	1025	-	7
ml naming_error.ml in hphp/hack/src/errors	1102	-	7
gd.h in hphp/runtime/ext/gd/libgd	436	-	6
hhi builtins_openssl.hhi in hphp/hack/hhi/stdlib	142	-	6
visitor.rs in hphp/hack/src/rupro/ty	128	13	6
desugar_expression_tree.rs in hphp/hack/src/parser/lowerer	1501	47	6
gdft.cpp in hphp/runtime/ext/gd/libgd	829	10	5
hhi builtins_mysql.hhi in hphp/hack/hhi/stdlib	210	-	5
hhi classes.hhi in hphp/hack/hhi	204	-	5
ml monitorConnection.ml in hphp/hack/src/monitor	360	-	5
cmake ThinArchives.cmake in CMake	20	-	4
hhi func_pointers.hhi in hphp/hack/hhi	188	-	4
hhi builtins_memcache.hhi in hphp/hack/hhi/stdlib	71	-	4
hhi builtins_datetime.hhi in hphp/hack/hhi/stdlib	250	-	4
hhi builtins_string.hhi in hphp/hack/hhi/stdlib	212	-	4
hhi builtins_prof.hhi in hphp/hack/hhi/stdlib	60	-	4
ml generate_full_fidelity_data.ml in hphp/hack/src	2870	-	4
ml hh_fanout.ml in hphp/hack/src/hh_fanout	961	-	4
ml autocompleteService.ml in hphp/hack/src/server	1224	-	4
ml serverLocalConfig.ml in hphp/hack/src/server	1536	-	4
mli counters.mli in hphp/hack/src/utils	43	-	4
cmake FindTBB.cmake in CMake	187	-	3
gd_rotate.cpp in hphp/runtime/ext/gd/libgd	354	7	3