Repository Analysis

material-components/material-web

Material Design Web Components

7.2 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of material-components/material-web, a SCSS project with 11,093 GitHub stars. SynthScan v2.0 examined 137,460 lines of code across 1303 source files, recording 963 pattern matches distributed across 5 syntactic categories. The overall adjusted score of 7.2 places this repository in the Low AI signal band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

7.2
Adjusted Score
7.2
Raw Score
100%
Time Factor
2026-07-14
Last Push
11.1K
Stars
SCSS
Language
137.5K
Lines of Code
1.3K
Files
963
Pattern Hits
2026-07-14
Scan Date
0.00
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 0HIGH 4MEDIUM 1LOW 958

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 963 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.

Over-Commented Block923 hits · 923 pts
SeverityFileLineSnippetContext
LOWtabs/_secondary-tab.scss1//COMMENT
LOWtabs/_primary-tab.scss1//COMMENT
LOWtabs/internal/primary-tab-styles.scss1//COMMENT
LOWtabs/internal/tab-styles.scss1//COMMENT
LOWtabs/internal/tabs-styles.scss1//COMMENT
LOWtabs/internal/secondary-tab-styles.scss1//COMMENT
LOWtabs/internal/tabs.ts81 // binding.COMMENT
LOWlabs/card/_outlined-card.scss1//COMMENT
LOWlabs/card/_filled-card.scss1//COMMENT
LOWlabs/card/_elevated-card.scss1//COMMENT
LOWlabs/card/internal/elevated-styles.scss1//COMMENT
LOWlabs/card/internal/shared-styles.scss1//COMMENT
LOWlabs/card/internal/outlined-styles.scss1//COMMENT
LOWlabs/card/internal/filled-styles.scss1//COMMENT
LOWlabs/navigationdrawer/_navigation-drawer-modal.scss1//COMMENT
LOWlabs/navigationdrawer/_navigation-drawer.scss1//COMMENT
LOW…avigationdrawer/internal/navigation-drawer-styles.scss1//COMMENT
LOWlabs/navigationdrawer/internal/shared-styles.scss1//COMMENT
LOW…iondrawer/internal/navigation-drawer-modal-styles.scss1//COMMENT
LOWlabs/navigationbar/_navigation-bar.scss1//COMMENT
LOWlabs/navigationbar/internal/_navigation-bar.scss1//COMMENT
LOWlabs/navigationbar/internal/navigation-bar-styles.scss1//COMMENT
LOWlabs/behaviors/form-associated.ts221 // Coerce `disabled` in `Boolean()` to ensure that setting to `null` orCOMMENT
LOWlabs/behaviors/constraint-validation.ts201 oldValue?: unknown,COMMENT
LOWlabs/behaviors/on-report-validity.ts341 */COMMENT
LOWlabs/behaviors/validators/text-field-validator.ts181 // Use -1 to represent no minlength and maxlength, which is what theCOMMENT
LOWlabs/item/internal/_item.scss1//COMMENT
LOWlabs/item/internal/item-styles.scss1//COMMENT
LOWlabs/segmentedbuttonset/internal/shared-styles.scss1//COMMENT
LOWlabs/segmentedbuttonset/internal/outlined-styles.scss1//COMMENT
LOW…gmentedbutton/internal/_outlined-segmented-button.scss1//COMMENT
LOWlabs/segmentedbutton/internal/shared-styles.scss1//COMMENT
LOWlabs/segmentedbutton/internal/outlined-styles.scss1//COMMENT
LOWlabs/segmentedbutton/internal/_shared.scss81 font-size: var(--_icon-size);COMMENT
LOWlabs/navigationtab/_navigation-tab.scss1//COMMENT
LOWlabs/navigationtab/internal/navigation-tab-styles.scss1//COMMENT
LOWlabs/badge/_badge.scss1//COMMENT
LOWlabs/badge/internal/_badge.scss1//COMMENT
LOWlabs/badge/internal/badge-styles.scss1//COMMENT
LOWradio/_radio.scss1//COMMENT
LOWradio/internal/radio-styles.scss1//COMMENT
LOWprogress/_linear-progress.scss1//COMMENT
LOWprogress/_circular-progress.scss1//COMMENT
LOWchips/_input-chip.scss1//COMMENT
LOWchips/_suggestion-chip.scss1//COMMENT
LOWchips/_filter-chip.scss1//COMMENT
LOWchips/_assist-chip.scss1//COMMENT
LOWchips/internal/input-styles.scss1//COMMENT
LOWchips/internal/trailing-icon-styles.scss1//COMMENT
LOWchips/internal/elevated-styles.scss1//COMMENT
LOWchips/internal/shared-styles.scss1//COMMENT
LOWchips/internal/selectable-styles.scss1//COMMENT
LOWchips/internal/suggestion-styles.scss1//COMMENT
LOWchips/internal/chip-set-styles.scss1//COMMENT
LOWchips/internal/filter-styles.scss1//COMMENT
LOWchips/internal/assist-styles.scss1//COMMENT
LOWcolor/_color.scss1//COMMENT
LOWcolor/_color.scss21/// 'primary': /* ... */,COMMENT
LOWcolor/_color.scss61/// @use 'sass:map';COMMENT
LOWcolor/_color.scss81/// // Opt: palette values for:COMMENT
863 more matches not shown…
Cross-Language Confusion (JS/TS)4 hits · 30 pts
SeverityFileLineSnippetContext
HIGHlabs/behaviors/on-report-validity.ts381 * @return True if there is no form or if the control is the form's firstCOMMENT
HIGHlabs/behaviors/validators/validator.ts103 * @return True if the states are equal, or false if not.COMMENT
HIGHinternal/aria/aria.ts73 * @return True if the attribute is an aria attribute, or false if not.COMMENT
HIGHtesting/harness.ts48 * @return True if the element has a harness property.COMMENT
Hyper-Verbose Identifiers27 hits · 27 pts
SeverityFileLineSnippetContext
LOWlabs/behaviors/on-report-validity.ts251function addFormReportValidListener(CODE
LOWlabs/behaviors/on-report-validity.ts384function isFirstInvalidControlInForm(CODE
LOWcatalog/src/utils/theme.ts108export function getLastSavedAutoColorMode() {CODE
LOWcatalog/src/utils/theme.ts121export function saveLastSavedAutoColorMode(mode: 'light' | 'dark') {CODE
LOWcatalog/src/pages/components.ts22async function updateMessageTargetOnIframeLoad(CODE
LOWcatalog/src/pages/components.ts38async function syncPlaygroundThemeWithPage() {CODE
LOWcatalog/src/pages/global.ts74function determinePageNavigationAutoMode() {CODE
LOWinternal/aria/delegate.ts145function setupDelegatesAriaProperties(ctor: typeof ReactiveElement) {CODE
LOWinternal/aria/delegate.ts196function ariaAttributeToDataAttribute(ariaAttribute: string) {CODE
LOWinternal/aria/delegate.ts201function ariaAttributeToDataProperty(ariaAttribute: string) {CODE
LOWinternal/events/form-label-activation.ts93async function squelchEventsForMicrotask() {CODE
LOWripple/demo/demo.ts25function cssCustomPropertyAsNumber(CODE
LOWtesting/transform-pseudo-classes.ts34export function getTransformedPseudoClass(pseudoClass: string) {CODE
LOWlist/internal/list-navigation-helpers.ts285export function createDeactivateItemsEvent() {CODE
LOWlist/internal/list-navigation-helpers.ts305export function createRequestActivationEvent() {CODE
LOWmenu/demo/stories.ts482function setButtonAriaExpandedFalse(e: Event) {CODE
LOWmenu/internal/controllers/shared.ts138export function createStayOpenOnFocusoutEvent() {CODE
LOWmenu/internal/controllers/shared.ts146export function createCloseOnFocusoutEvent() {CODE
LOWmenu/internal/controllers/shared.ts166export function createDeactivateTypeaheadEvent() {CODE
LOWmenu/internal/controllers/shared.ts182export function createActivateTypeaheadEvent() {CODE
LOWscripts/analyzer/update-docs.ts191function generateFieldMarkdownTable(element: MdModuleInfo): MarkdownTable {CODE
LOWscripts/analyzer/update-docs.ts290function generateMethodMarkdownTable(element: MdModuleInfo): MarkdownTable {CODE
LOWscripts/analyzer/update-docs.ts357function generateEventsMarkdownTable(element: MdModuleInfo): MarkdownTable {CODE
LOWscripts/analyzer/update-docs.ts487function stringifyMarkdownTableSections(elements: ElementTableSection[]) {CODE
LOWscripts/analyzer/generate-manifest.ts56async function generateManifestFromTsconfig(basePath: AbsolutePath) {CODE
LOWselect/internal/selectoption/selectOptionController.ts19export function createRequestSelectionEvent() {CODE
LOWselect/internal/selectoption/selectOptionController.ts30export function createRequestDeselectionEvent() {CODE
Fake / Example Data8 hits · 10 pts
SeverityFileLineSnippetContext
LOWlabs/item/demo/stories.ts59 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus condimentum rhoncus est volutpat venenatis.';CODE
LOWlabs/item/demo/stories.ts59 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus condimentum rhoncus est volutpat venenatis.';CODE
LOWtextfield/demo/demo.ts24 new Knob('placeholder', {ui: textInput(), defaultValue: ''}),CODE
LOWdocs/components/divider.md30![A full width divider separating two paragraphs of "Lorem ipsum"](images/divider/usage.webp "Full width divider exampleCODE
LOWdocs/components/divider.md34 <p>Lorem ipsum...</p>CODE
LOWdocs/components/divider.md36 <p>Lorem ipsum...</p>CODE
LOWdocs/components/divider.md115 <p>Lorem ipsum...</p>CODE
LOWdocs/components/divider.md117 <p>Lorem ipsum...</p>CODE
AI Slop Vocabulary1 hit · 3 pts
SeverityFileLineSnippetContext
MEDIUMtextfield/internal/_icon.scss19 // Absolutely position the icons within their `icon-size` container. ThisCOMMENT