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AI Slop Code Risk Monitor

terser/terser

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

🗜 JavaScript parser, mangler and compressor toolkit for ES6+

3.4 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for terser/terser, a JavaScript project with 9,356 GitHub stars. SynthScan examined 120,171 lines of code across 303 source files, recording 74 pattern matches distributed across 4 syntactic categories. The legacy adjusted pattern signal is 3.4 (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.

3.4
Adjusted Signal
3.4
Raw Pattern Score
100%
Time Factor
2026-10-05
Last Push
9.4K
Stars
JavaScript
Language
120.2K
Lines of Code
303
Files
74
Pattern Hits
2026-10-31
Scan Date
0.21
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 0.3/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 8 finding(s).

Hallucinated Dependency & Supply Chain Risk 15.4/100 · LOW

Are imports declared and package/API names verified? 66 finding(s).

Agent Over-Engineering Ratio 0.1/100 · LOW

Are wrappers, guards, and repeated structures necessary? 3 finding(s).

PR Review Velocity Impact 15.3/100 · LOW

Which changes need focused human review? 74 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 65MEDIUM 0LOW 9

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 74 distinct pattern matches across 4 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.

Cross-Language Confusion (JS/TS)65 hits · 400 pts
SeverityFileLineSnippetContext
HIGHtest/compress/issue_1014.js9 print() {CODE
HIGHtest/compress/issue_1014.js19 print() {CODE
HIGHtest/compress/issue_1014.js36 print() {CODE
HIGHtest/compress/issue_1014.js46 print() {CODE
HIGHtest/compress/issue_1014.js63 print() {CODE
HIGHtest/compress/issue_1014.js73 print() {CODE
HIGHtest/compress/issue_1014.js90 print() {CODE
HIGHtest/compress/issue_1014.js100 print() {CODE
HIGHtest/compress/collapse_vars.js1999 print('Foo:', twice);CODE
HIGHtest/compress/collapse_vars.js2006 print('Foo:', x * 2);CODE
HIGHtest/compress/collapse_vars.js2022 print('Foo:', twice);CODE
HIGHtest/compress/collapse_vars.js2030 print('Foo:', twice);CODE
HIGHtest/compress/collapse_vars.js2048 print('Foo:', twice);CODE
HIGHtest/compress/collapse_vars.js2055 print('Foo:', x.y * 2);CODE
HIGHtest/compress/labels.js34 print("stuff");CODE
HIGHtest/compress/classes.js213 print() {CODE
HIGHtest/compress/classes.js225 print() {CODE
HIGH⚡test/compress/async.js219 print({ async });CODE
HIGH⚡test/compress/async.js220 print({ await });CODE
HIGH⚡test/compress/async.js221 print({ async, await });CODE
HIGH⚡test/compress/async.js222 print({ await, async });CODE
HIGH⚡test/compress/async.js224 print({ async: async });CODE
HIGH⚡test/compress/async.js225 print({ await: await });CODE
HIGH⚡test/compress/async.js226 print({ async: async, await: await });CODE
HIGH⚡test/compress/async.js227 print({ await: await, async: async });CODE
HIGHtest/compress/pure_funcs.js679 print(2);CODE
HIGHtest/compress/pure_funcs.js680 print(3);CODE
HIGH⚡test/compress/expansions.js42 print(a);CODE
HIGH⚡test/compress/expansions.js44 print(b);CODE
HIGH⚡test/compress/expansions.js47 print(...a);CODE
HIGH⚡test/compress/expansions.js49 print(b);CODE
HIGH⚡test/compress/expansions.js52 print(a);CODE
HIGH⚡test/compress/expansions.js54 print(...b);CODE
HIGH⚡test/compress/expansions.js61 print(m ? a : b);CODE
HIGHtest/compress/inline.js464 print();CODE
HIGHtest/compress/inline.js488 print();CODE
HIGHtest/compress/issue_999.js11 print(variant) {CODE
HIGHtest/compress/issue_999.js27 print(variant) {CODE
HIGHtest/compress/block-scope.js260 print(A);CODE
HIGHtest/input/issue-1242/qux.js3print('q' + 'u' + 'x', x, y);CODE
HIGH⚡lib/output.js633 print("*");CODE
HIGH⚡lib/output.js637 print(" ");CODE
HIGH⚡lib/output.js644 print(make_indent(half ? 0.5 : 0));CODE
HIGH⚡lib/output.js671 print(";");CODE
HIGH⚡lib/output.js678 print(";");CODE
HIGH⚡lib/output.js687 print("{");CODE
HIGH⚡lib/output.js693 print("}");CODE
HIGH⚡lib/output.js698 print("(");CODE
HIGH⚡lib/output.js702 print(")");CODE
HIGH⚡lib/output.js707 print("[");CODE
HIGH⚡lib/output.js710 print("]");CODE
HIGH⚡lib/output.js715 print(",");CODE
HIGH⚡lib/output.js720 print(":");CODE
HIGH⚡lib/output.js832 print("//" + value + "\n");CODE
HIGH⚡lib/output.js839 print("/*" + value + "*/");CODE
HIGH⚡lib/output.js846 print("\n");CODE
HIGH⚡lib/output.js871 print("\n");CODE
HIGH⚡lib/output.js875 print("\n");CODE
HIGH⚡lib/output.js883 print("//" + value);CODE
HIGH⚡lib/output.js889 print("/*" + value + "*/");CODE
5 more matches not shown…
Overly Generic Function Names5 hits · 5 pts
SeverityFileLineSnippetContext
LOWtest/compress/harmony.js1608 function doSomething(x) {CODE
LOWtest/compress/harmony.js1618 function doSomething(x) {CODE
LOWtest/compress/harmony.js1656 function doSomething(x) {CODE
LOWtest/compress/harmony.js1666 function doSomething(o) {CODE
LOWtest/compress/harmony.js1704 function doSomething(x) {CODE
Hyper-Verbose Identifiers3 hits · 3 pts
SeverityFileLineSnippetContext
LOWtest/compress/functions.js1772 function renderEventHandlerClosure(eventName) {CODE
LOWtest/compress/functions.js1784 function renderEventHandlerClosure(eventName) {CODE
LOWtest/mocha/utils.js8export function assertCodeWithInlineMapEquals(actual, expected) {CODE
Fake / Example Data1 hit · 1 pts
SeverityFileLineSnippetContext
LOWtools/domprops.js7257 "placeholder",CODE