AI Slop Code Risk Monitor

sveltejs/kit

Name: sveltejs/kit — 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).

web development, streamlined

0.5 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for sveltejs/kit, a JavaScript project with 20,887 GitHub stars. SynthScan examined 156,966 lines of code across 2855 source files, recording 25 pattern matches distributed across 7 syntactic categories. The legacy adjusted pattern signal is 0.5 (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.

0.5

Adjusted Signal

0.5

Raw Pattern Score

100%

Time Factor

2026-10-30

Last Push

20.9K

Stars

JavaScript

Language

157.0K

Lines of Code

2.9K

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 0.5/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 12 finding(s).

Hallucinated Dependency & Supply Chain Risk 1.9/100 · LOW

Are imports declared and package/API names verified? 13 finding(s).

Agent Over-Engineering Ratio 0.0/100 · LOW

Are wrappers, guards, and repeated structures necessary? 1 finding(s).

PR Review Velocity Impact 2.2/100 · LOW

Which changes need focused human review? 25 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 3HIGH 3MEDIUM 2LOW 17

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 25 distinct pattern matches across 7 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 Indicators3 hits · 30 pts

Severity	File	Line	Snippet	Context
CRITICAL	…pps/async/src/routes/remote/form/snapshot/+page.svelte	23	live = form.fields.a.b.c.value();	CODE
CRITICAL	…pps/async/src/routes/remote/form/snapshot/+page.svelte	26	<input {...update.fields.a.b.c.as('text')} />	CODE
CRITICAL	packages/kit/src/exports/vite/dev/index.js	332	vite_dev_server.config.server.fs.allow.some((dir) => file.startsWith(dir));	CODE

Cross-Language Confusion (JS/TS)3 hits · 22 pts

Severity	File	Line	Snippet	Context
HIGH⚡	packages/kit/src/core/postbuild/prerender.js	328	print('\x1B[1A'); // move cursor to start of progress update	CODE
HIGH⚡	packages/kit/src/core/postbuild/prerender.js	329	print('\x1B[2K'); // clear current line	CODE
HIGH⚡	packages/kit/src/core/postbuild/prerender.js	336	print(`crawling ${path}\n`);	CODE

Fake / Example Data7 hits · 9 pts

Severity	File	Line	Snippet	Context
LOW⚡	…mentation/docs/20-core-concepts/60-remote-functions.md	702	content: 'Lorem ipsum dolor sit amet...'	CODE
LOW⚡	…mentation/docs/20-core-concepts/60-remote-functions.md	702	content: 'Lorem ipsum dolor sit amet...'	CODE
LOW⚡	…mentation/docs/20-core-concepts/60-remote-functions.md	707	createPost.fields.content.set('Lorem ipsum dolor sit amet');	CODE
LOW⚡	…mentation/docs/20-core-concepts/60-remote-functions.md	707	createPost.fields.content.set('Lorem ipsum dolor sit amet');	CODE
LOW	documentation/docs/20-core-concepts/10-routing.md	93	content: 'Welcome to our blog. Lorem ipsum dolor sit amet...'	CODE
LOW	documentation/docs/20-core-concepts/10-routing.md	93	content: 'Welcome to our blog. Lorem ipsum dolor sit amet...'	CODE
LOW	…src/core/sync/write_types/test/actions/+page.server.js	20	username: 'John Doe',	CODE

Over-Commented Block8 hits · 8 pts

Severity	File	Line	Snippet	Context
LOW	packages/enhanced-img/src/index.js	61	/**	COMMENT
LOW	packages/kit/types/index.d.ts	2221	// in the Software without restriction, including without limitation the rights	COMMENT
LOW	…apps/options/source/pages/inline-style/+page.server.js	1	// test that the server-client stylesheet map is constructed correctly when	COMMENT
LOW	packages/kit/src/types/private.d.ts	41	// in the Software without restriction, including without limitation the rights	COMMENT
LOW	packages/kit/src/runtime/form-utils.spec.js	821	// index 5: (unused)	COMMENT
LOW	packages/kit/src/runtime/form-utils.spec.js	861	// Simulates the vulnerability: many files all pointing to the same data region.	COMMENT
LOW	packages/kit/src/runtime/server/page/csp.js	101	const effective_script_src = d['script-src'] \|\| d['default-src'];	COMMENT
LOW	packages/kit/src/exports/vite/index.js	441	// Without this, the tests will still pass but `pnpm dev` will fail in projects that link `@sveltejs/kit`.	COMMENT

AI Slop Vocabulary2 hits · 6 pts

Severity	File	Line	Snippet	Context
MEDIUM	packages/kit/types/index.d.ts	4089	// These are all functions so that we can leverage function overloads to get the correct type.	COMMENT
MEDIUM	packages/kit/src/types/ambient.d.ts	126	// These are all functions so that we can leverage function overloads to get the correct type.	COMMENT

Slop Phrases1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	pnpm-workspace.yaml	95	# if you want to introduce an override, make sure to add it to all of them too	COMMENT

Hyper-Verbose Identifiers1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	…es/kit/test/apps/basics/test/playwright/client.test.js	2749	async function measureInteractionToPaint(selector) {	CODE