AI Slop Code Risk Monitor

visjs/vis-timeline

Name: visjs/vis-timeline — 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).

📅 Create a fully customizable, interactive timelines and 2d-graphs with items and ranges.

0.8 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for visjs/vis-timeline, a JavaScript project with 2,576 GitHub stars. SynthScan examined 80,229 lines of code across 262 source files, recording 19 pattern matches distributed across 5 syntactic categories. The legacy adjusted pattern signal is 0.8 (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.

0.8

Adjusted Signal

0.8

Raw Pattern Score

100%

Time Factor

2026-10-31

Last Push

2.6K

Stars

JavaScript

Language

80.2K

Lines of Code

262

Files

Pattern Hits

2026-10-31

Scan Date

0.02

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 0.8/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 13 finding(s).

Hallucinated Dependency & Supply Chain Risk 3.2/100 · LOW

Are imports declared and package/API names verified? 6 finding(s).

Agent Over-Engineering Ratio 0.5/100 · LOW

Are wrappers, guards, and repeated structures necessary? 8 finding(s).

PR Review Velocity Impact 3.9/100 · LOW

Which changes need focused human review? 19 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 5HIGH 0MEDIUM 0LOW 14

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 19 distinct pattern matches across 5 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.

Hallucination Indicators5 hits · 50 pts

Severity	File	Line	Snippet	Context
CRITICAL	docs/js/jquery.min.js	4	},cur:function(){var a=Zb.propHooks[this.prop];return a&&a.get?a.get(this):Zb.propHooks._default.get(this)},run:function	CODE
CRITICAL	lib/timeline/component/Legend.js	179	4 - Number(this.body.dom.center.style.top.replace("px", "")) + "px";	CODE
CRITICAL	lib/timeline/component/Legend.js	188	Number(this.body.dom.center.style.top.replace("px", "")) +	CODE
CRITICAL	lib/timeline/component/item/Item.js	197	me.parent.itemSet.body.emitter.emit("click", {	CODE
CRITICAL	lib/timeline/component/item/Item.js	205	me.parent.itemSet.body.emitter.emit("doubleClick", {	CODE

Hyper-Verbose Identifiers8 hits · 8 pts

Severity	File	Line	Snippet	Context
LOW	docs/js/ie-emulation-modes-warning.js	24	function actualNonEmulatedIEMajorVersion() {	CODE
LOW	examples/timeline/other/drag_drop.html	172	function handleObjectItemDragStart(event) {	CODE
LOW	examples/timeline/interaction/sequentialSelection.html	270	function toggleSequentialSelection() {	CODE
LOW	lib/hammerUtil.js	58	export function disablePreventDefaultVertically(pinchRecognizer) {	CODE
LOW	lib/timeline/DateUtil.js	457	export function getHiddenDurationBeforeStart(hiddenDates, start, end) {	CODE
LOW	lib/timeline/DateUtil.js	517	export function getAccumulatedHiddenDuration(	CODE
LOW	lib/timeline/Stack.js	155	export function stackSubgroupsWithInnerStack(subgroupItems, margin, subgroups) {	CODE
LOW	lib/timeline/Stack.js	404	function checkVerticalSpatialCollision(a, b, margin) {	CODE

Over-Commented Block4 hits · 4 pts

Severity	File	Line	Snippet	Context
LOW	types/index.d.ts	1	// Type definitions for vis.js 4.21	COMMENT
LOW	examples/timeline/editing/customSnappingOfItems.html	41	},	COMMENT
LOW	examples/timeline/dataHandling/dataSerialization.html	121	//	COMMENT
LOW	lib/timeline/DateUtil.js	321	//checkFirstStep = function(timeStep) {	COMMENT

Fake / Example Data1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	docs/js/jquery.highlight.js	21	* $('#content').highlight('lorem ipsum');	COMMENT

TODO Padding1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	lib/timeline/component/item/BackgroundItem.js	18	* // TODO: implement support for the BackgroundItem just having a start, then being displayed as a sort of an annotat	COMMENT