josdejong/mathjs

6.8

Adjusted Score

6.8

Raw Score

100%

Time Factor

2026-07-30

Last Push

15.1K

Stars

JavaScript

Language

163.7K

Lines of Code

1.1K

Files

203

Pattern Hits

2026-08-02

Scan Date

0.13

HC Hit Rate

What These Metrics Mean

Adjusted Score: Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score: The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor: The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits: Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate: High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files: Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 3HIGH 151MEDIUM 0LOW 49

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 203 distinct pattern matches across 5 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Cross-Language Confusion (JS/TS)151 hits · 1016 pts

Severity	File	Line	Snippet	Context
HIGH	types/index.d.ts	3388	print(	CODE
HIGH	types/index.d.ts	7086	print(	CODE
HIGH⚡	examples/expressions.js	22	print(evaluate('sqrt(3^2 + 4^2)')) // 5	CODE
HIGH⚡	examples/expressions.js	23	print(evaluate('sqrt(-4)')) // 2i	CODE
HIGH⚡	examples/expressions.js	24	print(evaluate('2 inch to cm')) // 5.08 cm	CODE
HIGH⚡	examples/expressions.js	25	print(evaluate('cos(45 deg)')) // 0.70711	CODE
HIGH⚡	examples/expressions.js	29	print(evaluate([	CODE
HIGH⚡	examples/expressions.js	43	print(evaluate('a * b', scope)) // 12	CODE
HIGH⚡	examples/expressions.js	46	print(evaluate('c = 2.3 + 4.5', scope)) // 6.8	CODE
HIGH⚡	examples/expressions.js	47	print(scope.c) // 6.8	CODE
HIGH⚡	examples/expressions.js	53	print(evaluate('hello("hero")', scope)) // "hello, hero!"	CODE
HIGH⚡	examples/expressions.js	57	print(f(2)) // 8	CODE
HIGH⚡	examples/expressions.js	58	print(scope.f(2)) // 8	CODE
HIGH⚡	examples/expressions.js	74	print(node1.toString()) // "sqrt((3 ^ 2) + (4 ^ 2))"	CODE
HIGH⚡	examples/expressions.js	78	print(node1.evaluate()) // 5	CODE
HIGH⚡	examples/expressions.js	84	print(node2.toString()) // "x ^ a"	CODE
HIGH⚡	examples/expressions.js	89	print(code2.evaluate(scope2)) // 9	CODE
HIGH⚡	examples/expressions.js	93	print(code2.evaluate(scope2)) // 27	CODE
HIGH⚡	examples/expressions.js	133	print(myParser.evaluate('sqrt(3^2 + 4^2)')) // 5	CODE
HIGH⚡	examples/expressions.js	134	print(myParser.evaluate('sqrt(-4)')) // 2i	CODE
HIGH⚡	examples/expressions.js	135	print(myParser.evaluate('2 inch to cm')) // 5.08 cm	CODE
HIGH⚡	examples/expressions.js	136	print(myParser.evaluate('cos(45 deg)')) // 0.70710678118655	CODE
HIGH⚡	examples/expressions.js	140	print(myParser.evaluate('x = 7 / 2')) // 3.5	CODE
HIGH⚡	examples/expressions.js	141	print(myParser.evaluate('x + 3')) // 6.5	CODE
HIGH⚡	examples/expressions.js	142	print(myParser.evaluate('f2(x, y) = x^y')) // f2(x, y)	CODE
HIGH⚡	examples/expressions.js	143	print(myParser.evaluate('f2(2, 3)')) // 8	CODE
HIGH⚡	examples/expressions.js	150	print(myParser.evaluate('k = [1, 2; 3, 4]')) // [[1, 2], [3, 4]]	CODE
HIGH⚡	examples/expressions.js	151	print(myParser.evaluate('l = zeros(2, 2)')) // [[0, 0], [0, 0]]	CODE
HIGH⚡	examples/expressions.js	152	print(myParser.evaluate('l[1, 1:2] = [5, 6]')) // [5, 6]	CODE
HIGH⚡	examples/expressions.js	153	print(myParser.evaluate('l')) // [[5, 6], [0, 0]]	CODE
HIGH⚡	examples/expressions.js	154	print(myParser.evaluate('l[2, :] = [7, 8]')) // [7, 8]	CODE
HIGH⚡	examples/expressions.js	155	print(myParser.evaluate('l')) // [[5, 6], [7, 8]]	CODE
HIGH⚡	examples/expressions.js	156	print(myParser.evaluate('m = k * l')) // [[19, 22], [43, 50]]	CODE
HIGH⚡	examples/expressions.js	157	print(myParser.evaluate('n = m[2, 1]')) // 43	CODE
HIGH⚡	examples/expressions.js	158	print(myParser.evaluate('n = m[:, 1]')) // [[19], [43]]	CODE
HIGH	examples/expressions.js	111	print(code3.evaluate()) // 5	CODE
HIGH	examples/expressions.js	120	print(scope3.a) // 10	CODE
HIGH	examples/expressions.js	170	print(myParser.evaluate('i / 2')) // 250	CODE
HIGH	examples/expressions.js	174	print(myParser.evaluate('hello("hero")')) // "hello, hero!"	CODE
HIGH⚡	examples/basic_usage.js	23	print(round(e, 3)) // 2.718	CODE
HIGH⚡	examples/basic_usage.js	24	print(atan2(3, -3) / pi) // 0.75	CODE
HIGH⚡	examples/basic_usage.js	25	print(log(10000, 10)) // 4	CODE
HIGH⚡	examples/basic_usage.js	26	print(sqrt(-4)) // 2i	CODE
HIGH⚡	examples/basic_usage.js	27	print(pow([[-1, 2], [3, 1]], 2)) // [[7, 0], [0, 7]]	CODE
HIGH⚡	examples/basic_usage.js	28	print(derivative('x^2 + x', 'x')) // 2 * x + 1	CODE
HIGH⚡	examples/basic_usage.js	33	print(evaluate('1.2 * (2 + 4.5)')) // 7.8	CODE
HIGH⚡	examples/basic_usage.js	34	print(evaluate('12.7 cm to inch')) // 5 inch	CODE
HIGH⚡	examples/basic_usage.js	35	print(evaluate('sin(45 deg) ^ 2')) // 0.5	CODE
HIGH⚡	examples/basic_usage.js	36	print(evaluate('9 / 3 + 2i')) // 3 + 2i	CODE
HIGH⚡	examples/basic_usage.js	37	print(evaluate('det([-1, 2; 3, 1])')) // -7	CODE
HIGH⚡	examples/basic_usage.js	46	print(a) // 14	CODE
HIGH⚡	examples/basic_usage.js	51	print(add(4, [5, 6])) // number + Array, [9, 10]	CODE
HIGH⚡	examples/basic_usage.js	52	print(multiply(unit('5 mm'), 3)) // Unit * number, 15 mm	CODE
HIGH⚡	examples/basic_usage.js	53	print(subtract([2, 3, 4], 5)) // Array - number, [-3, -2, -1]	CODE
HIGH⚡	examples/basic_usage.js	54	print(add(matrix([2, 3]), [4, 5])) // Matrix + Array, [6, 8]	CODE
HIGH⚡	examples/import.js	20	print(math.myConstant * 2) // 84	CODE
HIGH⚡	examples/import.js	21	print(math.hello('user')) // 'hello, user!'	CODE
HIGH⚡	examples/import.js	23	print(math.evaluate('myConstant + 10')) // 52	CODE
HIGH⚡	examples/import.js	24	print(math.evaluate('hello("user")')) // 'hello, user!'	CODE
HIGH	examples/import.js	40	print(math.fibonacci(7)) // 13	CODE
91 more matches not shown…

Hallucination Indicators3 hits · 45 pts

Severity	File	Line	Snippet	Context
CRITICAL⚡	test/unit-tests/expression/security.test.js	235	math.evaluate('cos.syntax="global.eval";s=unit("5 cm");s.units=[]._data;s.value=cos;s._compile=s.toString;expressi	CODE
CRITICAL⚡	test/unit-tests/expression/security.test.js	241	math.evaluate('expression.node.ConstantNode.prototype.clone.call({"value":"evaluate"}).evaluate()("console.log(\'h	CODE
CRITICAL⚡	test/unit-tests/expression/security.test.js	247	math.evaluate('c(x,y)="console.log(\'hacked...\')";expression.node.Node.prototype.compile.apply({_compile:c}).eval	CODE

Hyper-Verbose Identifiers21 hits · 22 pts

Severity	File	Line	Snippet	Context
LOW	gulpfile.js	219	function generateEntryFilesCallback (done) {	CODE
LOW	tools/entryGenerator.js	192	function generateDependenciesFiles ({ suffix, factories, entryFolder }) {	CODE
LOW	test/unit-tests/function/probability/random.test.js	135	function assertUniformDistribution (values, min, max) {	CODE
LOW	test/unit-tests/function/algebra/derivative.test.js	11	function derivativeWithoutSimplify (expr, value) {	CODE
LOW	…t/unit-tests/function/algebra/decomposition/qr.test.js	59	function assertValidQRDecomposition (A, Q, R) {	CODE
LOW	test/unit-tests/expression/parse.test.js	30	function parseAndStringifyWithParens (expr) {	CODE
LOW	src/factoriesNumber.js	340	function createNumberOptionalSecondArgFactory (name, fn) {	CODE
LOW⚡	src/core/function/import.js	370	function hasTypedFunctionSignature (fn) {	CODE
LOW⚡	src/core/function/import.js	378	function factoryAllowedInExpressions (factory) {	CODE
LOW⚡	src/core/function/import.js	384	function isTransformFunctionFactory (factory) {	CODE
LOW	src/utils/array.js	928	function recursiveForEachWithIndex (value, depth) {	CODE
LOW	src/utils/snapshot.js	97	export function createSnapshotFromFactories (factories) {	CODE
LOW	src/utils/bignumber/bitwise.js	215	function decCoefficientToBinaryString (x) {	CODE
LOW	src/function/matrix/matrixFromColumns.js	69	function checkVectorTypeAndReturnLength (vec) {	CODE
LOW	src/function/matrix/matrixFromRows.js	58	function checkVectorTypeAndReturnLength (vec) {	CODE
LOW	src/type/number.js	29	function makeNumberFromNonDecimalParts (parts) {	CODE
LOW	src/expression/parse.js	1065	function parseMultiplyDivideModulus (state) {	CODE
LOW	src/expression/parse.js	1101	function parseImplicitMultiplication (state) {	CODE
LOW	src/expression/node/FunctionAssignmentNode.js	107	return function evalFunctionAssignmentNode (scope, args, context) {	CODE
LOW	src/expression/node/OperatorNode.js	48	function calculateNecessaryParentheses (root, parenthesis, implicit, args, latex) {	CODE
LOW	src/expression/node/RangeNode.js	19	function calculateNecessaryParentheses (node, parenthesis, implicit) {	CODE

TODO Padding15 hits · 22 pts

Severity	File	Line	Snippet	Context
LOW	…t/unit-tests/function/algebra/simplifyConstant.test.js	64	// TODO: implement support for simplification of constant sub-expressions for inverses of	COMMENT
LOW	test/generated-code-tests/entry/mainNumber.test.js	140	// TODO: implement support for subset in number implementation	COMMENT
LOW	bin/cli.js	413	// TODO: implement configuration via command line arguments	COMMENT
LOW	src/utils/bignumber/formatter.js	158	// TODO: implement support for upper and lower to be BigNumbers themselves	COMMENT
LOW	src/function/statistics/prod.js	41	// TODO: implement prod(A, dim)	COMMENT
LOW	src/function/statistics/median.js	96	// TODO: implement median(A, dim)	COMMENT
LOW	src/function/probability/permutations.js	69	// TODO: implement support for collection in permutations	COMMENT
LOW	src/function/probability/combinations.js	61	// TODO: implement support for collection in combinations	COMMENT
LOW	src/function/complex/arg.js	48	// TODO: implement BigNumber support for function arg	COMMENT
LOW	src/function/arithmetic/divide.js	55	// TODO: implement matrix right division using pseudo inverse	COMMENT
LOW	src/function/arithmetic/xgcd.js	40	// TODO: implement support for Fraction	COMMENT
LOW	src/function/bitwise/rightLogShift.js	61	// 'BigNumber, BigNumber': ..., // TODO: implement BigNumber support for rightLogShift	COMMENT
LOW	src/type/matrix/Range.js	267	// TODO: implement a caching mechanism for range.valueOf()	COMMENT
LOW	src/type/matrix/MatrixIndex.js	75	// TODO: implement support for wildcard '*'	COMMENT
LOW	src/expression/node/IndexNode.js	62	// TODO: implement support for bignumber (currently bignumbers are silently	COMMENT

Over-Commented Block13 hits · 12 pts

Severity	File	Line	Snippet	Context
LOW	tools/whitelistgenerator.js	101	// 'cbrt': true,	COMMENT
LOW	…t/unit-tests/function/algebra/simplifyConstant.test.js	61	// collapsing of constants with a 'falsy' value (e.g. '0')	COMMENT
LOW	examples/expressions.js	61	//	COMMENT
LOW	examples/advanced/function_transform.js	41	// result: 6	COMMENT
LOW	examples/advanced/custom_loading.js	21	// Use the created functions	COMMENT
LOW	examples/advanced/convert_fraction_to_bignumber.js	1	// Convert from Fraction to BigNumber	COMMENT
LOW	examples/advanced/more_secure_eval.js	1	// Expression parser security	COMMENT
LOW	src/utils/is.js	1	// type checks for all known types	COMMENT
LOW	src/function/matrix/eigs/complexEigs.js	21	// R is the row transformation matrix	COMMENT
LOW	src/function/algebra/simplify.js	201	phi: true,	COMMENT
LOW	src/function/algebra/rationalize.js	401	}	COMMENT
LOW	src/function/algebra/sparse/csAmd.js	81	// select node of minimum approximate degree. amd() is now ready to start eliminating the graph. It first	COMMENT
LOW	src/expression/operators.js	1	// list of identifiers of nodes in order of their precedence	COMMENT

Analysis Overview

What These Metrics Mean

Score History

Severity Breakdown

Directory Score Breakdown

Pattern Findings