AI Slop Code Risk Monitor

vega/vega

Name: vega/vega — JavaScript Code Quality & Security Review | AI Slop Code Risk Monitor
Creator: AI Slop Code Risk Monitor

Adjusted legacy signal; badge bands: 25 / 50 / 75 (different from dashboard bands).

A visualization grammar.

0.1 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for vega/vega, a JavaScript project with 12,032 GitHub stars. SynthScan examined 628,032 lines of code across 1616 source files, recording 35 pattern matches distributed across 8 syntactic categories. The legacy adjusted pattern signal is 0.1 (Low pattern signal); it is not an authorship estimate.

Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.

0.1

Adjusted Signal

0.1

Raw Pattern Score

100%

Time Factor

2026-10-29

Last Push

12.0K

Stars

JavaScript

Language

628.0K

Lines of Code

1.6K

Files

Pattern Hits

2026-10-31

Scan Date

0.00

HC Hit Rate

Risk Review · Payload v1

Use each vector to guide manual verification of the underlying findings.

Payload schema: 1.0.0 · Engine: 2.0.0 · Scoring: heuristic-density-v1 · Scan date: 2026-10-31.

Cognitive Ownership Risk 0.4/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 30 finding(s).

Hallucinated Dependency & Supply Chain Risk 0.0/100 · LOW

Are imports declared and package/API names verified? 5 finding(s).

Agent Over-Engineering Ratio 0.1/100 · LOW

Are wrappers, guards, and repeated structures necessary? 7 finding(s).

PR Review Velocity Impact 0.4/100 · LOW

Which changes need focused human review? 35 finding(s).

What These Metrics Mean

Adjusted Signal: Legacy pattern score normalized per 1,000 scanned lines and multiplied by the repository-level time factor. It is not an estimate of AI authorship.
Raw Pattern Score: Sum of severity- and context-weighted pattern findings before applying the time factor.
Time Factor: A coarse multiplier based on repository last-push metadata. It does not identify when individual code was written.
Pattern Hits: Count of configured pattern findings. Review each location and surrounding code before acting.
HC Hit Rate: High- and critical-severity findings per scanned file. Severity is a configured detector weight, not proof of a vulnerability or authorship.
Lines / Files: Scan coverage denominators used by the legacy normalized score.

Pattern-Signal History

This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.

Severity Breakdown

Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.

CRITICAL 0HIGH 1MEDIUM 4LOW 30

Directory Score Breakdown

This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.

Pattern Findings

The scanner identified 35 distinct pattern matches across 8 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. 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 configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.

Structural Annotation Overuse12 hits · 18 pts

Severity	File	Line	Snippet	Context
LOW	docs/tutorials/airports/index.md	31	## Step 1: Meet the Data	COMMENT
LOW	docs/tutorials/airports/index.md	66	## Step 2: Visualization Scaffolding	COMMENT
LOW	docs/tutorials/airports/index.md	97	## Step 3: Draw a U.S. State Map	COMMENT
LOW	docs/tutorials/airports/index.md	185	## Step 4: Plot All the Airports	COMMENT
LOW	docs/tutorials/airports/index.md	253	## Step 5: Filter the Airports by Traffic	COMMENT
LOW	docs/tutorials/airports/index.md	317	## Step 6: Size the Airports by Traffic	COMMENT
LOW	docs/tutorials/airports/index.md	364	## Step 7: Show Airport Name on Mouse Hover	COMMENT
LOW	docs/tutorials/airports/index.md	432	## Step 8: Sort the Airports by Size	COMMENT
LOW	docs/tutorials/airports/index.md	479	## Step 9: Plot the Connections among Airports	COMMENT
LOW	docs/tutorials/airports/index.md	540	## Step 10: Show Connections on Mouse Hover	COMMENT
LOW	docs/tutorials/airports/index.md	569	## Step 11: Add Mouse Acceleration via Voronoi Cells	COMMENT
LOW	docs/tutorials/airports/index.md	650	## Step 12: One Last Thing...	COMMENT

Synthetic Comment Markers1 hit · 8 pts

Severity	File	Line	Snippet	Context
HIGH	packages/vega-encode/src/Scale.js	171	// perform 'nice' adjustment as requested	COMMENT

Hyper-Verbose Identifiers7 hits · 7 pts

Severity	File	Line	Snippet	Context
LOW	packages/vega-expression/src/parser.js	194	function scanUnicodeCodePointEscape() {	CODE
LOW	packages/vega-expression/src/parser.js	912	function finishConditionalExpression(test, consequent, alternate) {	CODE
LOW	packages/vega-expression/src/parser.js	1256	function parseLeftHandSideExpressionAllowCall() {	CODE
LOW	packages/vega-expression/src/parser.js	1446	function parseConditionalExpression() {	CODE
LOW	packages/vega-format/src/number.js	101	export function resetNumberFormatDefaultLocale() {	CODE
LOW	packages/vega-format/src/number.js	112	export function numberFormatDefaultLocale(definition) {	CODE
LOW	packages/vega-format/src/time.js	69	export function resetTimeFormatDefaultLocale() {	CODE

Over-Commented Block6 hits · 6 pts

Severity	File	Line	Snippet	Context
LOW	packages/vega-typings/tests/spec/invalid/signal-push.ts	1	import { Spec } from 'vega';	COMMENT
LOW	packages/vega-typings/tests/spec/invalid/signal-push.ts	21	// ]	COMMENT
LOW	packages/vega-typings/tests/spec/invalid/signal-push.ts	41	// }	COMMENT
LOW	packages/vega-typings/tests/spec/invalid/signal-push.ts	61	// ]	COMMENT
LOW	packages/vega-typings/tests/spec/invalid/signal.ts	21		COMMENT
LOW	packages/vega-typings/tests/spec/invalid/signal.ts	121	spec = { signals: [{ name: 'foo', on: [{ events: 'pointerdown', update: '1', force: {} }] }] };	COMMENT

Fake / Example Data5 hits · 5 pts

Severity	File	Line	Snippet	Context
LOW	docs/docs/marks/path.vg.json	9	"bind": {"input": "text", "placeholder": "SVG Path String"} },	CODE
LOW	docs/examples/job-voyager.vg.json	19	"bind": {"input": "text", "placeholder": "search", "autocomplete": "off"}	CODE
LOW	packages/vega-scenegraph/test/schema-test.js	76	{marktype: 'path', items: [{path: 'lorem ipsum'}]},	CODE
LOW	packages/vega/test/specs-valid/jobs.vg.json	18	"bind": {"input": "text", "placeholder": "search", "autocomplete": "off"}	CODE
LOW	packages/vega-view/test/bind-test.js	37	t.equal(input.getAttribute('placeholder'), 'Search');	CODE

Modern AI Meta-Vocabulary2 hits · 4 pts

Severity	File	Line	Snippet	Context
MEDIUM	docs/examples/line-chart.md	9	Line charts are used to depict changing values, with line slopes conveying rates of change. Different interpolators chan	CODE
MEDIUM	docs/tutorials/airports/index.md	14	2. [Visualization Scaffolding](#visualization-scaffolding)	CODE

AI Slop Vocabulary1 hit · 2 pts

Severity	File	Line	Snippet	Context
MEDIUM	package-lock.json	18151	"resolved": "https://registry.npmjs.org/robust-predicates/-/robust-predicates-3.0.2.tgz",	CODE

Slop Phrases1 hit · 2 pts

Severity	File	Line	Snippet	Context
MEDIUM	docs/examples/serpentine-timeline.vg.json	3	"description": "a serpentine timeline. The serpentine shape can be an option for instances where an oblong canvas is	CODE