FCA Hubs

Evidence-derived hubs are ranked from coverage artifacts, not static graph scores.

Substrate hubs

Substrate hubs are foundational concepts whose intent includes at least 90% of all collected tests. The percentage is breadth, not a quality score. They are auto-suppressed from PR impact summaries because they describe shared plumbing rather than a specific behavior.

showing 25 of 27

Concept	Intent share
yerror.ts ×2 809 tests · 4 LOC · 1 file · introduces 0 tests · 4 LOC · 1 file	99%
parse-command.ts ×2 804 tests · 14 LOC · 1 file · introduces 0 tests · 14 LOC · 1 file	98%
argsert.ts ×3 803 tests · 31 LOC · 3 files · introduces 0 tests · 13 LOC · 1 file	98%
argsert.ts ×4 802 tests · 58 LOC · 3 files · introduces 0 tests · 27 LOC · 1 file	98%
parse-command.ts ×1 802 tests · 20 LOC · 1 file · introduces 1 test · 6 LOC · 1 file	98%
parse-command.ts ×3 801 tests · 83 LOC · 3 files · introduces 0 tests · 19 LOC · 2 files	98%
argsert.ts ×1 801 tests · 61 LOC · 3 files · introduces 0 tests · 3 LOC · 1 file	98%
parse-command.ts ×1 798 tests · 88 LOC · 3 files · introduces 0 tests · 5 LOC · 1 file	97%
process-argv.ts ×5 797 tests · 13 LOC · 1 file · introduces 3 tests · 13 LOC · 1 file	97%
argsert.ts ×3 797 tests · 92 LOC · 3 files · introduces 0 tests · 6 LOC · 1 file	97%
argsert.ts ×2 796 tests · 95 LOC · 3 files · introduces 0 tests · 3 LOC · 1 file	97%
argsert.ts ×1 795 tests · 97 LOC · 3 files · introduces 0 tests · 2 LOC · 1 file	97%
apply-extends.ts ×4 794 tests · 26 LOC · 3 files · introduces 2 tests · 9 LOC · 1 file	97%
argsert.ts ×1 794 tests · 107 LOC · 3 files · introduces 0 tests · 7 LOC · 1 file	97%
is-promise.ts ×1 794 tests · 1 LOC · 1 file · introduces 0 tests · 1 LOC · 1 file	97%
argsert.ts ×1 793 tests · 108 LOC · 3 files · introduces 0 tests · 1 LOC · 1 file	97%
parse-command.ts ×1 792 tests · 90 LOC · 3 files · introduces 0 tests · 4 LOC · 1 file	97%
argsert.mjs\|title=Argsert allows for any type if * is provided\|occurrence=1, argsert.mjs\|title=Argsert should ignore trailing undefined values\|occurrence=1 792 tests · 110 LOC · 3 files · introduces 2 tests · 0 LOC · 0 files	97%
argsert.ts ×1 791 tests · 97 LOC · 3 files · introduces 1 test · 1 LOC · 1 file	96%
argsert.ts ×1 790 tests · 109 LOC · 3 files · introduces 0 tests · 7 LOC · 1 file	96%
common-types.ts ×4 789 tests · 134 LOC · 2 files · introduces 0 tests · 134 LOC · 2 files	96%
argsert.ts ×1 789 tests · 110 LOC · 3 files · introduces 1 test · 1 LOC · 1 file	96%
yargs-factory.ts ×124 788 tests · 1203 LOC · 18 files · introduces 1 test · 1015 LOC · 10 files	96%
obj-filter.ts ×2 788 tests · 144 LOC · 2 files · introduces 0 tests · 10 LOC · 2 files	96%
process-argv.ts ×3 788 tests · 40 LOC · 3 files · introduces 0 tests · 14 LOC · 1 file	96%

Load-bearing concepts

showing 25 of 1169

Concept	Test packages
yerror.ts ×2 809 tests · 4 LOC · 1 file · introduces 0 tests · 4 LOC · 1 file	10 packages
parse-command.ts ×2 804 tests · 14 LOC · 1 file · introduces 0 tests · 14 LOC · 1 file	10 packages
argsert.ts ×3 803 tests · 31 LOC · 3 files · introduces 0 tests · 13 LOC · 1 file	10 packages
argsert.ts ×4 802 tests · 58 LOC · 3 files · introduces 0 tests · 27 LOC · 1 file	10 packages
parse-command.ts ×1 802 tests · 20 LOC · 1 file · introduces 1 test · 6 LOC · 1 file	10 packages
argsert.ts ×1 801 tests · 61 LOC · 3 files · introduces 0 tests · 3 LOC · 1 file	10 packages
parse-command.ts ×3 801 tests · 83 LOC · 3 files · introduces 0 tests · 19 LOC · 2 files	10 packages
parse-command.ts ×1 798 tests · 88 LOC · 3 files · introduces 0 tests · 5 LOC · 1 file	10 packages
argsert.ts ×3 797 tests · 92 LOC · 3 files · introduces 0 tests · 6 LOC · 1 file	10 packages
process-argv.ts ×5 797 tests · 13 LOC · 1 file · introduces 3 tests · 13 LOC · 1 file	10 packages
argsert.ts ×2 796 tests · 95 LOC · 3 files · introduces 0 tests · 3 LOC · 1 file	10 packages
argsert.ts ×1 795 tests · 97 LOC · 3 files · introduces 0 tests · 2 LOC · 1 file	10 packages
apply-extends.ts ×4 794 tests · 26 LOC · 3 files · introduces 2 tests · 9 LOC · 1 file	10 packages
argsert.ts ×1 794 tests · 107 LOC · 3 files · introduces 0 tests · 7 LOC · 1 file	10 packages
is-promise.ts ×1 794 tests · 1 LOC · 1 file · introduces 0 tests · 1 LOC · 1 file	10 packages
argsert.ts ×1 793 tests · 108 LOC · 3 files · introduces 0 tests · 1 LOC · 1 file	10 packages
argsert.mjs\|title=Argsert allows for any type if * is provided\|occurrence=1, argsert.mjs\|title=Argsert should ignore trailing undefined values\|occurrence=1 792 tests · 110 LOC · 3 files · introduces 2 tests · 0 LOC · 0 files	10 packages
parse-command.ts ×1 792 tests · 90 LOC · 3 files · introduces 0 tests · 4 LOC · 1 file	10 packages
argsert.ts ×1 791 tests · 97 LOC · 3 files · introduces 1 test · 1 LOC · 1 file	10 packages
argsert.ts ×1 790 tests · 109 LOC · 3 files · introduces 0 tests · 7 LOC · 1 file	10 packages
argsert.ts ×1 789 tests · 110 LOC · 3 files · introduces 1 test · 1 LOC · 1 file	10 packages
common-types.ts ×4 789 tests · 134 LOC · 2 files · introduces 0 tests · 134 LOC · 2 files	10 packages
obj-filter.ts ×2 788 tests · 144 LOC · 2 files · introduces 0 tests · 10 LOC · 2 files	10 packages
process-argv.ts ×3 788 tests · 40 LOC · 3 files · introduces 0 tests · 14 LOC · 1 file	10 packages
yargs-factory.ts ×124 788 tests · 1203 LOC · 18 files · introduces 1 test · 1015 LOC · 10 files	10 packages

Largest code-introducing concepts

Code projection ranked only by canonical introduced ranges.

showing 25 of 562

Concept	Introduced ranges
yargs-factory.ts ×124 788 tests · 1203 LOC · 18 files · introduces 1 test · 1015 LOC · 10 files	197 ranges
yargs-factory.ts ×35 787 tests · 1896 LOC · 18 files · introduces 0 tests · 577 LOC · 8 files	93 ranges
yargs-factory.ts ×28 262 tests · 1977 LOC · 18 files · introduces 0 tests · 76 LOC · 1 file	28 ranges
usage.ts ×19 417 tests · 2190 LOC · 18 files · introduces 0 tests · 125 LOC · 2 files	20 ranges
completion.ts ×19 78 tests · 2283 LOC · 18 files · introduces 0 tests · 75 LOC · 1 file	19 ranges
usage.ts ×17 416 tests · 2342 LOC · 18 files · introduces 0 tests · 142 LOC · 2 files	18 ranges
command.ts ×12 274 tests · 2250 LOC · 18 files · introduces 0 tests · 95 LOC · 1 file	12 ranges
yargs-factory.ts ×9 709 tests · 1984 LOC · 18 files · introduces 0 tests · 72 LOC · 2 files	10 ranges
command.ts ×8 215 tests · 2444 LOC · 18 files · introduces 0 tests · 55 LOC · 2 files	9 ranges
yargs-factory.ts ×5 692 tests · 2060 LOC · 18 files · introduces 0 tests · 66 LOC · 4 files	8 ranges
command.ts ×8 102 tests · 2671 LOC · 18 files · introduces 0 tests · 39 LOC · 1 file	8 ranges
yargs-factory.ts ×2 684 tests · 2130 LOC · 18 files · introduces 0 tests · 53 LOC · 6 files	7 ranges
validation.ts ×7 52 tests · 2349 LOC · 18 files · introduces 0 tests · 29 LOC · 1 file	7 ranges
yargs-factory.ts ×5 703 tests · 2008 LOC · 18 files · introduces 0 tests · 20 LOC · 2 files	6 ranges
validation.ts ×4 426 tests · 2190 LOC · 18 files · introduces 0 tests · 24 LOC · 2 files	6 ranges
yargs-factory.ts ×6 312 tests · 2109 LOC · 18 files · introduces 0 tests · 10 LOC · 1 file	6 ranges
usage.ts ×6 61 tests · 2494 LOC · 18 files · introduces 0 tests · 38 LOC · 1 file	6 ranges
completion.ts ×6 35 tests · 2433 LOC · 18 files · introduces 0 tests · 28 LOC · 1 file	6 ranges
usage.ts ×4 5 tests · 2458 LOC · 18 files · introduces 0 tests · 26 LOC · 2 files	6 ranges
process-argv.ts ×5 797 tests · 13 LOC · 1 file · introduces 3 tests · 13 LOC · 1 file	5 ranges
common-types.ts ×4 789 tests · 134 LOC · 2 files · introduces 0 tests · 134 LOC · 2 files	5 ranges
yargs-factory.ts ×5 697 tests · 2004 LOC · 18 files · introduces 0 tests · 11 LOC · 1 file	5 ranges
command.ts ×5 419 tests · 1961 LOC · 18 files · introduces 0 tests · 41 LOC · 1 file	5 ranges
command.ts ×4 198 tests · 2615 LOC · 18 files · introduces 0 tests · 18 LOC · 2 files	5 ranges
yargs-factory.ts ×5 97 tests · 1916 LOC · 18 files · introduces 0 tests · 15 LOC · 1 file	5 ranges

Largest test-introducing concepts

Test ranking uses canonical introduced tests; code and test units are never combined.

showing 25 of 695

Concept	Introduced tests
yargs-factory.ts ×1 453 tests · 1902 LOC · 18 files · introduces 9 tests · 1 LOC · 1 file	9 tests
validation.mjs\|title=validation tests choices fails with one invalid value\|occurrence=1, validation.mjs\|title=validation tests choices fails with case-insensitive value\|occurrence=1, +3 5 tests · 2465 LOC · 18 files · introduces 5 tests · 0 LOC · 0 files	5 tests
yargs.mjs\|title=yargs dsl tests config extends handles absolute paths\|occurrence=1, yargs.mjs\|title=yargs dsl tests config extends does not deep merge objects by default\|occurrence=1, +3 7 tests · 2433 LOC · 18 files · introduces 5 tests · 0 LOC · 0 files	5 tests
completion.ts ×1 6 tests · 1931 LOC · 18 files · introduces 4 tests · 22 LOC · 2 files	4 tests
yargs-factory.ts ×1 6 tests · 1909 LOC · 18 files · introduces 4 tests · 1 LOC · 1 file	4 tests
command.mjs\|title=Command API accepts function as 3rd argument\|occurrence=1, command.mjs\|title=Command ignores extra spaces in command string\|occurrence=1, +2 12 tests · 2032 LOC · 18 files · introduces 4 tests · 0 LOC · 0 files	4 tests
command.mjs\|title=Command API accepts module (with command array) as 1st argument\|occurrence=1, command.mjs\|title=Command API accepts module (with command array and aliases array) as 1st argument\|occurrence=1, +2 4 tests · 2056 LOC · 18 files · introduces 4 tests · 0 LOC · 0 files	4 tests
completion, --get-yargs-completions, …) completes single digit options with two dashes\|occurrence=1, completion, --get-yargs-completions, …) completes short options with a single dash when the user did not already enter two dashes\|occurrence=1, +2 4 tests · 2579 LOC · 18 files · introduces 4 tests · 0 LOC · 0 files	4 tests
yargs.mjs\|title=yargs dsl tests parse parses a quoted string\|occurrence=1, yargs.mjs\|title=yargs dsl tests parse parses a simple string\|occurrence=1, +2 120 tests · 2360 LOC · 18 files · introduces 4 tests · 0 LOC · 0 files	4 tests
process-argv.ts ×5 797 tests · 13 LOC · 1 file · introduces 3 tests · 13 LOC · 1 file	3 tests
usage.ts ×2 3 tests · 2811 LOC · 18 files · introduces 3 tests · 12 LOC · 2 files	3 tests
is-promise.ts ×2 715 tests · 8 LOC · 1 file · introduces 3 tests · 7 LOC · 1 file	3 tests
is-promise.ts ×1 61 tests · 9 LOC · 1 file · introduces 3 tests · 1 LOC · 1 file	3 tests
command.mjs\|title=Command API accepts module (missing handler function) as 1st argument\|occurrence=1, command.mjs\|title=Command API accepts module (describe key, builder object) as 1st argument\|occurrence=1, +1 5 tests · 2052 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
command.mjs\|title=Command commandDir supports absolute dirs\|occurrence=1, command.mjs\|title=Command commandDir supports relative dirs\|occurrence=1, +1 8 tests · 2809 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
command.mjs\|title=Command missing positional arguments does not fail if optional argument is missing\|occurrence=1, command.mjs\|title=Command positional arguments populates argv with camel-case variants of arguments when possible\|occurrence=1, +1 8 tests · 3214 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
command.mjs\|title=Command variadic allows optional arguments to be variadic\|occurrence=1, command.mjs\|title=Command variadic does not fail if zero optional arguments are provided\|occurrence=1, +1 3 tests · 3218 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
usage.mjs\|title=usage tests $0 is detected correctly for a basic script\|occurrence=1, usage.mjs\|title=usage tests $0 is detected correctly when dirname contains "iojs"\|occurrence=1, +1 334 tests · 1903 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
validation.mjs\|title=validation tests config should be displayed in the help message\|occurrence=1, validation.mjs\|title=validation tests config should allow help message to be overridden\|occurrence=1, +1 3 tests · 2656 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
validation.mjs\|title=validation tests implies fails if --no-foo's implied argument is not set\|occurrence=1, validation.mjs\|title=validation tests implies fails if implied key (with "no" in the name) is given when it should not\|occurrence=1, +1 3 tests · 2457 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
yargs.mjs\|title=yargs dsl tests .help() enables `--help` option and `help` command with `true` argument\|occurrence=1, yargs.mjs\|title=yargs dsl tests .help() enables given string as help option and command with custom description with two string arguments\|occurrence=1, +1 4 tests · 2625 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
yargs.mjs\|title=yargs dsl tests function passed as second argument to parse commands allows context object to be passed to parse\|occurrence=1, yargs.mjs\|title=yargs dsl tests function passed as second argument to parse commands does not fail if context object has cyclical reference\|occurrence=1, +1 3 tests · 3211 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
yargs.mjs\|title=yargs dsl tests positional allows a string type to be specified\|occurrence=1, yargs-test.mjs\|title=ESM bug #1758 does not drop .0 if positional is configured as string\|occurrence=1, +1 4 tests · 3385 LOC · 18 files · introduces 3 tests · 0 LOC · 0 files	3 tests
apply-extends.ts ×4 794 tests · 26 LOC · 3 files · introduces 2 tests · 9 LOC · 1 file	2 tests
apply-extends.ts ×1 2 tests · 2453 LOC · 18 files · introduces 2 tests · 1 LOC · 1 file	2 tests