wasm-bindgen/wasm-bindgen

19.5

Adjusted Score

19.5

Raw Score

100%

Time Factor

2026-08-28

Last Push

9.1K

Stars

Rust

Language

430.0K

Lines of Code

3.2K

Files

9.4K

Pattern Hits

2026-08-29

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

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

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 0MEDIUM 35LOW 9318

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 9353 distinct pattern matches across 9 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 Block9295 hits · 8257 pts

Severity	File	Line	Snippet	Context
LOW	publish.rs	1	//! Helper script to publish the wasm-bindgen suite of crates	COMMENT
LOW	crates/futures/src/lib.rs	1	//! Bridging the gap between Rust Futures and JavaScript Promises.	COMMENT
LOW	crates/test/src/lib.rs	1	//! Runtime support for the `#[wasm_bindgen_test]` attribute	COMMENT
LOW	crates/test/src/lib.rs	41	/// This macro is invoked as:	COMMENT
LOW	crates/test/src/lib.rs	121		COMMENT
LOW	crates/test/src/rt/mod.rs	1	//! Internal-only runtime module used for the `wasm_bindgen_test` crate.	COMMENT
LOW	crates/test/src/rt/mod.rs	21	// runs.	COMMENT
LOW	crates/test/src/rt/mod.rs	41	// * The `wasm-bindgen-test-runner` binary takes over. It runs `wasm-bindgen`	COMMENT
LOW	crates/test/src/rt/mod.rs	61	// This is used for test filters today.	COMMENT
LOW	crates/test/src/rt/mod.rs	121		COMMENT
LOW	crates/test/src/rt/mod.rs	461	/// If a test is currently running it takes the `args` array and stringifies	COMMENT
LOW	crates/test/src/rt/mod.rs	801	/// we've got Rust code running we'll be able to capture output.	COMMENT
LOW	crates/test/src/rt/criterion/measurement.rs	1	//! This module defines a set of traits that can be used to plug different measurements (eg.	COMMENT
LOW	crates/test/src/rt/criterion/measurement.rs	41	/// The given typical value should be used to choose the unit. This function may be called	COMMENT
LOW	crates/test/src/rt/criterion/measurement.rs	61	/// Scale the values and return a unit string designed for machines.	COMMENT
LOW	crates/test/src/rt/criterion/bencher.rs	1	use super::measurement::Measurement;	COMMENT
LOW	crates/test/src/rt/criterion/bencher.rs	21	/// or [`iter_batched_ref`]. See [`BatchSize`] for a discussion of batch sizes.	COMMENT
LOW	crates/test/src/rt/criterion/bencher.rs	41	/// Times a `routine` by executing it many times and timing the total elapsed time.	COMMENT
LOW	crates/test/src/rt/criterion/bencher.rs	61	for _ in 0..self.iters {	COMMENT
LOW	crates/test/src/rt/criterion/bencher.rs	81	///	COMMENT
LOW	crates/test/src/rt/criterion/bencher.rs	101	self.iterated = true;	COMMENT
LOW	crates/test/src/rt/criterion/bencher.rs	141	/// # Example	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	1	//! A statistics-driven micro-benchmarking library written in Rust.	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	61	///	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	141	/// measurement time.	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	161	#[must_use]	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	181	assert!(dur.as_nanos() > 0);	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	201	if n <= 1000 {	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	241	console_error!(	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	281	M: Measurement + 'static,	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	341	/// Benchmarks a future.	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	381	/// an input string or `&[u8]`.	COMMENT
LOW	crates/test/src/rt/criterion/mod.rs	401	/// This enum allows the user to control how Criterion.rs chooses the iteration count when sampling.	COMMENT
LOW	…st/src/rt/criterion/stats/univariate/outliers/tukey.rs	1	//! Tukey's method	COMMENT
LOW	…st/src/rt/criterion/stats/univariate/outliers/tukey.rs	21	//!	COMMENT
LOW	…test/src/rt/criterion/stats/univariate/outliers/mod.rs	1	//! Classification of outliers	COMMENT
LOW	crates/test/src/rt/web_time/instant.rs	101	}	COMMENT
LOW	crates/cli-support/src/externref.rs	201		COMMENT
LOW	crates/cli-support/src/intrinsic.rs	1	//! Definition of all wasm-bindgen intrinsics.	COMMENT
LOW	crates/cli-support/src/lib.rs	461	// That includes checking that the binary has the same schema version	COMMENT
LOW	crates/cli-support/src/lib.rs	521	// own, which would otherwise reclassify a `panic=abort` module as	COMMENT
LOW	crates/cli-support/src/lib.rs	541	// externref table and allocation function.	COMMENT
LOW	crates/cli-support/src/suggest.rs	1	//! Suggestion helpers for "did you mean ...?" diagnostics.	COMMENT
LOW	crates/cli-support/src/descriptor.rs	1	use std::char;	COMMENT
LOW	crates/cli-support/src/wasm_conventions.rs	101	match candidates.len() {	COMMENT
LOW	crates/cli-support/src/wasm2es6js.rs	201	}	COMMENT
LOW	crates/cli-support/src/descriptors.rs	1	//! Management of wasm-bindgen descriptor functions.	COMMENT
LOW	crates/cli-support/src/interpreter/mod.rs	1	//! A tiny and incomplete Wasm interpreter	COMMENT
LOW	crates/cli-support/src/interpreter/mod.rs	41	// during descriptor execution.	COMMENT
LOW	crates/cli-support/src/interpreter/mod.rs	61		COMMENT
LOW	crates/cli-support/src/interpreter/mod.rs	241	}	COMMENT
LOW	crates/cli-support/src/interpreter/mod.rs	541	}	COMMENT
LOW	crates/cli-support/src/js/mod.rs	41	}	COMMENT
LOW	crates/cli-support/src/js/mod.rs	161		COMMENT
LOW	crates/cli-support/src/js/mod.rs	181	/// emcc needs to keep alive).	COMMENT
LOW	crates/cli-support/src/js/mod.rs	201	emscripten_import_postsets: BTreeMap<ImportId, String>,	COMMENT
LOW	crates/cli-support/src/js/mod.rs	281	/// Whether to generate helper methods for inspecting the class	COMMENT
LOW	crates/cli-support/src/js/mod.rs	481	}	COMMENT
LOW	crates/cli-support/src/js/mod.rs	1821	// must list every library symbol any adapter referenced (Imports'	COMMENT
LOW	crates/cli-support/src/js/mod.rs	1921	}	COMMENT
9235 more matches not shown…

Decorative Section Separators33 hits · 102 pts

Severity	File	Line	Snippet	Context
MEDIUM	crates/js-sys/src/futures/jspi.rs	83	// ─── Promising-entered task polls ────────────────────────────────────────────	COMMENT
MEDIUM	crates/cli/tests/wasm-bindgen/main.rs	3543	// ─── JSPI (JS Promise Integration) runtime tests ─────────────────────────────	COMMENT
MEDIUM	crates/cli/tests/reference/jspi.rs	5	// ── Suspending imports ───────────────────────────────────────────────────────	COMMENT
MEDIUM	crates/cli/tests/reference/jspi.rs	32	// ── JSPI exports ─────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-fetch-streams/index.html	207	// ── Feature detection ────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-fetch-streams/index.html	232	// ── Load WASM ────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-fetch-streams/index.html	248	// ── Demo ①: fetch + response streaming ──────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-fetch-streams/index.html	259	// ── Demo ②: read a JavaScript ReadableStream from Rust ───────────────────────	COMMENT
MEDIUM	examples/jspi-fetch-streams/index.html	291	// ── Demo ③: request body streaming detection ────────────────────────────────	COMMENT
MEDIUM	examples/jspi-fetch-streams/index.html	304	// ── Demo ④: concurrent fibers ────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-fetch-streams/index.html	328	// ── Run all ──────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-opfs/index.html	124	><span class="cm">// ── write a file ─────────────────────────────────────</span>	CODE
MEDIUM	examples/jspi-opfs/index.html	134	<span class="cm">// ── read a file ──────────────────────────────────────</span>	CODE
MEDIUM	examples/jspi-opfs/index.html	200	// ── Feature detection ────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-opfs/index.html	211	// ── Load WASM ────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-opfs/index.html	223	// ── Button handlers ──────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-opfs/index.html	303	// ── Concurrent reads (shadow-stack isolation test) ───────────────────────	COMMENT
MEDIUM	examples/jspi-opfs/src/lib.rs	33	// ─── navigator.storage helper ────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-opfs/src/lib.rs	58	// ─── Path traversal ──────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi-opfs/src/lib.rs	108	// ─────────────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi/index.html	49	// ── Feature detection ────────────────────────────────────────────────────	COMMENT
MEDIUM⚡	examples/jspi/index.html	62	// ── Load WASM module ─────────────────────────────────────────────────────	COMMENT
MEDIUM⚡	examples/jspi/index.html	70	// ── Demo 1: non-async sleep ──────────────────────────────────────────────	COMMENT
MEDIUM⚡	examples/jspi/index.html	79	// ── Demo 2: concurrent fibers ────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi/index.html	96	// ── Demo 3: large stack frames across a suspension ───────────────────────	COMMENT
MEDIUM	examples/jspi/index.html	111	// ── Demo 4: deep recursion + post-resume heap allocation ─────────────────	COMMENT
MEDIUM	examples/jspi/index.html	140	// ── Demo 5: concurrent deep-alloc fibers ─────────────────────────────────	COMMENT
MEDIUM	examples/jspi/src/lib.rs	40	// ─────────────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi/src/lib.rs	42	// ─────────────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi/src/lib.rs	66	// ─────────────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi/src/lib.rs	68	// ─────────────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi/src/lib.rs	113	// ─────────────────────────────────────────────────────────────────────────────	COMMENT
MEDIUM	examples/jspi/src/lib.rs	115	// ─────────────────────────────────────────────────────────────────────────────	COMMENT

Structural Annotation Overuse8 hits · 12 pts

Severity	File	Line	Snippet	Context
LOW	guide/src/wasm-bindgen-test/benchmark.md	20	### Step 1 - Add Dependency to Cargo.toml ###	COMMENT
LOW	guide/src/wasm-bindgen-test/benchmark.md	29	### Step 2 - Add Benchmark ###	COMMENT
LOW	guide/src/wasm-bindgen-test/benchmark.md	44	### Step 3 - Run Benchmark ###	COMMENT
LOW	guide/src/wasm-bindgen-test/benchmark.md	64	### Step 4 - Optimize ###	COMMENT
LOW	guide/src/wasm-bindgen-test/benchmark.md	105	### Step 5 - Asynchronous function ###	COMMENT
LOW	guide/src/wasm-bindgen-test/benchmark.md	125	### Step 6 - Run benchmark in browser ###	COMMENT
LOW	guide/src/wasm-bindgen-test/benchmark.md	129	### Step 7 - Configuration ###	COMMENT
LOW	src/rt/mod.rs	1021	// NOTE: This method is used to encode u32 into a variable-length-integer during the compile-time .	COMMENT

Fake / Example Data7 hits · 8 pts

Severity	File	Line	Snippet	Context
LOW	crates/webidl/src/constants.rs	1070	"placeholder",	CODE
LOW	crates/webidl/src/constants.rs	1266	"placeholder",	CODE
LOW	crates/web-sys/src/features/gen_HtmlTextAreaElement.rs	179	js_name = "placeholder"	CODE
LOW	crates/web-sys/src/features/gen_HtmlTextAreaElement.rs	191	js_name = "placeholder"	CODE
LOW	crates/web-sys/src/features/gen_HtmlInputElement.rs	408	#[wasm_bindgen(method, getter, js_class = "HTMLInputElement", js_name = "placeholder")]	COMMENT
LOW	crates/web-sys/src/features/gen_HtmlInputElement.rs	415	#[wasm_bindgen(method, setter, js_class = "HTMLInputElement", js_name = "placeholder")]	COMMENT
LOW	examples/weather_report/src/lib.rs	238	.set_attribute("placeholder", "Type city name here")	CODE

AI Slop Vocabulary2 hits · 6 pts

Severity	File	Line	Snippet	Context
MEDIUM	crates/js-sys/src/lib.rs	5963	/// It is a more robust version of the original, global isNaN().	COMMENT
MEDIUM	src/cast.rs	31	/// In general this is intended to be a more robust version of	COMMENT

Hyper-Verbose Identifiers5 hits · 5 pts

Severity	File	Line	Snippet	Context
LOW	crates/cli-support/src/js/mod.rs	4155	function GetOwnOrInheritedPropertyDescriptor(obj, id) {	CODE
LOW	crates/js-sys/tests/wait_async_mock.js	6	export function installNotifyOnlyWaitAsyncMock() {	CODE
LOW	crates/js-sys/tests/wasm/Promise.js	86	export async function testRustDoubleNumberPromise(rustModule) {	CODE
LOW	crates/cli/tests/reference/generic-import.bg.js	714	function GetOwnOrInheritedPropertyDescriptor(obj, id) {	CODE
LOW	examples/raytrace-parallel/server.py	5	class RequestHandler(SimpleHTTPRequestHandler):	CODE

Redundant / Tautological Comments1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	crates/cli-support/src/interpreter/mod.rs	259	/// # Return value	COMMENT

TODO Padding1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	crates/js-sys/tests/wasm/JsString.rs	649	// TODO: Add test once we have optional parameters	COMMENT

Slop Phrases1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	crates/cli-support/src/wit/mod.rs	2836	don't forget to recompile your Wasm file! Alternatively, you can update the	CODE

Analysis Overview

What These Metrics Mean

Score History

Severity Breakdown

Directory Score Breakdown

Pattern Findings