AI Slop Code Risk Monitor

DylanVann/react-native-fast-image

SlopCodeMonitor badge for DylanVann/react-native-fast-image Adjusted legacy signal; badge bands: 25 / 50 / 75 (different from dashboard bands).
1.6 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for DylanVann/react-native-fast-image. SynthScan examined 77,215 lines of code across 311 source files, recording 132 pattern matches distributed across 3 syntactic categories. The legacy adjusted pattern signal is 1.6 (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.

1.6
Adjusted Signal
1.6
Raw Pattern Score
100%
Time Factor
—
Last Push
—
Stars
—
Language
77.2K
Lines of Code
311
Files
132
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 6.8/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 111 finding(s).

Hallucinated Dependency & Supply Chain Risk 1.0/100 · LOW

Are imports declared and package/API names verified? 21 finding(s).

Agent Over-Engineering Ratio 1.4/100 · LOW

Are wrappers, guards, and repeated structures necessary? 21 finding(s).

PR Review Velocity Impact 8.2/100 · LOW

Which changes need focused human review? 132 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 0MEDIUM 0LOW 132

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 132 distinct pattern matches across 3 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.

Over-Commented Block90 hits · 87 pts
SeverityFileLineSnippetContext
LOWbenchmark/app/plugins/withSubject.js1// Links only this build's subject (see subjects.js): expo-image is an ExpoCOMMENT
LOWbenchmark/app/plugins/withAndroidBenchmark.js1// The Android build's benchmark setup (see ../../android):COMMENT
LOW…nchmark/app/modules/memory-samples/ios/MemorySamples.m1// The app's memory, measured in the app every 250 ms while the iOS memoryCOMMENT
LOWbenchmark/app/src/Scenario.tsx41 // several sizes at once.COMMENT
LOWbenchmark/images/make-images.ts1// Makes the benchmark's images: photos from picsum.photos, each tinted to itsCOMMENT
LOWbenchmark/ios/capture/Sources/capture/main.swift1// Records the screen of an iOS device connected over USB to QuickTimeCOMMENT
LOWbenchmark/ios/UITests/ImageServer.swift1// Serves the benchmark's images (../../images/out, in this test bundle) onCOMMENT
LOWbenchmark/ios/UITests/TotalMemoryMetric.swift1// The app's memory as the app measures it (MemorySamples, inCOMMENT
LOW…/dylanvann/rnfibenchmark/macrobenchmark/ImageServer.kt21// Serves the benchmark's images (../../images/out, in this APK's assets) onCOMMENT
LOW…ylanvann/rnfibenchmark/macrobenchmark/BenchmarkTest.kt21import org.junit.TestCOMMENT
LOWbenchmark/scripts/analyze.ts1// Finds when each image showed in a run's screen recording (see run.ts).COMMENT
LOWbenchmark/scripts/run-android.ts1// Runs the benchmark on Android (see ../README.md): on a connected device orCOMMENT
LOWbenchmark/scripts/run-android.ts21// results folder. WritesCOMMENT
LOWbenchmark/scripts/compare-videos.ts1// Makes a side-by-side video of a scenario's runs in a results folder: forCOMMENT
LOWbenchmark/scripts/run.ts1// Runs the benchmark on a connected iPhone (see ../README.md).COMMENT
LOW…mple/ios/ExampleAnimationClock/ExampleAnimationClock.m1#import <QuartzCore/QuartzCore.h>COMMENT
LOWReactNativeFastImageExample/src/RunnerContext.tsx21 // false: the work Fast Image does for it (its requests, decodes andCOMMENT
LOWReactNativeFastImageExample/src/RegressionRunner.tsx41// (or any controller) is connected to the relay; see index.tsx.COMMENT
LOWReactNativeFastImageExample/src/RegressionRunner.tsx61// the reply to 'measure'COMMENT
LOWReactNativeFastImageExample/src/RegressionRunner.tsx101 }COMMENT
LOWReactNativeFastImageExample/src/RegressionRunner.tsx241 // renders; the fade-default group checks the built-in default.COMMENT
LOWReactNativeFastImageExample/src/RegressionExample.tsx1741// requests (see the image server).COMMENT
LOWReactNativeFastImageExample/src/RegressionExample.tsx1761// queued-latest-url, with the same sixteen: an image of a url with aCOMMENT
LOWReactNativeFastImageExample/src/RegressionExample.tsx4301COMMENT
LOWReactNativeFastImageExample/src/RegressionExample.tsx5781 </View>COMMENT
LOWReactNativeFastImageExample/src/RegressionExample.tsx5801// - disk: a view showing it loaded it, then went away, and the memory cacheCOMMENT
LOWReactNativeFastImageExample/src/RegressionExample.tsx5821// contain, with the image (cyan-short.png, 42 × 41 px) a pixel shorterCOMMENT
LOWmaestro/background.yaml1# Sends the app to the background while an image is loading, and brings itCOMMENT
LOWmaestro/touch.yaml1# Taps the regression runner's `touch` cases, which need a real touch: theCOMMENT
LOWmaestro/background-no-activity.yaml1# Calls clearMemoryCache and clearDiskCache from JS while the app has noCOMMENT
LOWios/FastImage/FFFThumbHash.m1#import "FFFThumbHash.h"COMMENT
LOWios/FastImage/FFFastImageSource.h21@interface FFFastImageSource : NSObjectCOMMENT
LOWios/FastImage/FFFastImageSource.h61// Caches the image under cacheKey, or nil without one.COMMENT
LOWios/FastImage/FFFastImageSource.h81COMMENT
LOWios/FastImage/FFFastImageSource.h101// before the clear. So each response the web loader stores records the clearCOMMENT
LOWios/FastImage/FFFastImageModule.mm1#import "FFFastImageModule.h"COMMENT
LOWios/FastImage/FFFDownsampledImage.h1#import <SDWebImage/SDAnimatedImage.h>COMMENT
LOWios/FastImage/FFFDownsampledImage.h21// own thumbnail decoding can only fit, so this class works out the size fromCOMMENT
LOWios/FastImage/FFFDownsampledImage.h41// an SVG drawn at its own size at `screenScale` (or kept a vector if it'sCOMMENT
LOWios/FastImage/FFFDownsampledImage.h61COMMENT
LOWios/FastImage/FFFastImageView.m1#import "FFFastImageView.h"COMMENT
LOWios/FastImage/FFFastImageView.m21// The image before tinting and blurring, kept while either is applied so theyCOMMENT
LOWios/FastImage/FFFastImageView.m41// nothing). A new source then keeps it until the new image has loaded (seeCOMMENT
LOWios/FastImage/FFFastImageView.m61@property(nonatomic, assign) BOOL decodedCover;COMMENT
LOWios/FastImage/FFFastImageView.m81@property(nonatomic, assign) NSUInteger sizeReload;COMMENT
LOWios/FastImage/FFFastImageView.m161 // decoded frames, keeping the one it shows, unless another view playsCOMMENT
LOWios/FastImage/FFFastImageView.m761COMMENT
LOWios/FastImage/FFFThumbHash.h1#import <UIKit/UIKit.h>COMMENT
LOWios/FastImage/FFFastImageSource.m1#import "FFFastImageSource.h"COMMENT
LOWios/FastImage/FFFBoxBlur.h1#import <CoreGraphics/CoreGraphics.h>COMMENT
LOWios/FastImage/FFFastImageViewComponentView.mm1#import "FFFastImageViewComponentView.h"COMMENT
LOWios/FastImage/FFFastImageView.h41@property (nonatomic, copy) NSArray<FFFastImageSource *> *sources;COMMENT
LOWios/FastImage/FFFastImageView.h61// `loop` prop not set), 0 for forever, or a number of times.COMMENT
LOWios/FastImage/FFFDownsampledImage.m1#import "FFFDownsampledImage.h"COMMENT
LOWios/FastImage/FFFDownsampledImage.m21static SDImageCoderOption const FFFDecodeMaxScale = @"FFFDecodeMaxScale";COMMENT
LOW…rer/components/FastImage/FastImageAutoViewShadowNode.h1#pragma onceCOMMENT
LOWReactNativeFastImageExampleServer/formats.sh1#!/usr/bin/env bashCOMMENT
LOWReactNativeFastImageExampleServer/server.ts1// Serves the example app's images (images/) so it doesn't depend on remoteCOMMENT
LOWReactNativeFastImageExampleServer/server.ts21// (status 200, cacheable for an hour, like a captive portal's,COMMENT
LOWReactNativeFastImageExampleServer/server.ts41// User-Agent (which platform asked): `[{ "at": 1700000000000, "path":COMMENT
30 more matches not shown…
Hyper-Verbose Identifiers21 hits · 21 pts
SeverityFileLineSnippetContext
LOWReactNativeFastImageExample/src/SmokeExample.tsx1247function AutoSizeStretchedChangeCase() {CODE
LOWReactNativeFastImageExample/src/SmokeExample.tsx1579function AutoSizeNaturalChangeCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx792function PreloadInvalidHeadersCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx2699function ChunkedDownloadCancelCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx2771function SharedDownloadChunkedCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx4002function ObjectPositionContainCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx4180function ObjectPositionDefaultSourceCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx4481function SourceClearedWhileLoadingCase({ id }: { id: string }) {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx4545function SourceChangeWhileLoadingCase({CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx7860function DownsampleHiddenPixelatedCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx7905function DownsampleNaturalSizeCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx8014function DownsampleHiddenPositionCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx8641function DownsampleOverLimitSharedCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx9080function SeveralSourcesBundledCase({ id, size }: { id: string; size: number }) {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx9123function SeveralSourcesBorderChangeCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx10102function ThumbhashChangeLoadedCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx10157function ThumbhashPlaceholderLateCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx10214function ThumbhashChangeLoadingCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx10480function PlaceholderDataUriSizeCase() {CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx10653function PlaceholderUrlCacheOnlyCase() {CODE
LOWsrc/thumbhash.ts241function thumbHashToApproximateAspectRatio(hash: Uint8Array) {CODE
Fake / Example Data21 hits · 16 pts
SeverityFileLineSnippetContext
LOW…ylanvann/rnfibenchmark/macrobenchmark/BenchmarkTest.kt283 if ("placeholder" in variant) append("&placeholder=1")CODE
LOWscreenshots/main-android/descriptions.json1748 "placeholder": {CODE
LOWscreenshots/main-android/work.json1206 "placeholder": {CODE
LOWscreenshots/tv-ios/descriptions.json1733 "placeholder": {CODE
LOWscreenshots/tv-ios/work.json1291 "placeholder": {CODE
LOWscreenshots/main-ios/descriptions.json1733 "placeholder": {CODE
LOWscreenshots/main-ios/work.json1292 "placeholder": {CODE
LOWReactNativeFastImageExample/src/SmokeExample.tsx2176 <PlaceholderCase key="placeholder" />,CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx5864 | 'placeholder'CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx5908 const placeholder = from === 'placeholder'CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx11452 from="placeholder"CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12328 from="placeholder"CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12339 from="placeholder"CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12351 from="placeholder"CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12366 from="placeholder"CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12398 name: 'placeholder',CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12457 from="placeholder"CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12470 from="placeholder"CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12496 from="placeholder"CODE
LOWReactNativeFastImageExample/src/RegressionExample.tsx12525 from="placeholder"CODE
LOWsrc/index.test.tsx541describe('placeholder', () => {CODE