Lightweight fuzzy-search, in JavaScript
This report summarizes scanner evidence for krisk/Fuse, a JavaScript project with 20,520 GitHub stars. SynthScan examined 28,511 lines of code across 122 source files, recording 36 pattern matches distributed across 6 syntactic categories. The legacy adjusted pattern signal is 3.1 (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.
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.
Can maintainers explain intent, assumptions, and trade-offs? 8 finding(s).
Are imports declared and package/API names verified? 5 finding(s).
Are wrappers, guards, and repeated structures necessary? 25 finding(s).
Which changes need focused human review? 36 finding(s).
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.
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.
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.
The scanner identified 36 distinct pattern matches across 6 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.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | test/token-search-scenarios.test.js | 3 | // ──────────────────────────────────────────────────────────── | COMMENT |
| MEDIUM | test/token-search-scenarios.test.js | 6 | // ──────────────────────────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 1 | // ── Range / indices ──────────────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 5 | // ── Search internals ─────────────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 34 | // ── Key types ────────────────────────────────────────────────────── | COMMENT |
| MEDIUM⚡ | src/types.ts | 53 | // ── Get function ─────────────────────────────────────────────────── | COMMENT |
| MEDIUM⚡ | src/types.ts | 62 | // ── Tokenize function (token search) ─────────────────────────────── | COMMENT |
| MEDIUM⚡ | src/types.ts | 72 | // ── Norm ─────────────────────────────────────────────────────────── | COMMENT |
| MEDIUM⚡ | src/types.ts | 79 | // ── Index records ────────────────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 127 | // ── Sort function types ──────────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 156 | // ── Match score (internal) ───────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 181 | // ── Options ──────────────────────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 245 | // ── Search options ───────────────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 251 | // ── Result types ─────────────────────────────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 267 | // ── Object ("MongoDB-style") field query ─────────────────────────── | COMMENT |
| MEDIUM | src/types.ts | 344 | // ── Expression (logical search) ──────────────────────────────────── | COMMENT |
| MEDIUM | src/core/errorMessages.ts | 15 | // ── Object ("MongoDB-style") query syntax ────────────────────────── | COMMENT |
| MEDIUM | src/core/register.ts | 10 | // ── Object-query compiler seam ──────────────────────────────────── | COMMENT |
| MEDIUM | src/search/extended/matchers.ts | 5 | // ── Matcher interface ───────────────────────────────────────────── | COMMENT |
| MEDIUM | src/search/extended/matchers.ts | 16 | // ── Matcher definition ──────────────────────────────────────────── | COMMENT |
| MEDIUM | src/search/extended/matchers.ts | 37 | // ── Matcher definitions ─────────────────────────────────────────── | COMMENT |
| MEDIUM | src/search/extended/matchers.ts | 215 | // ── Object-query operator lookup ────────────────────────────────── | COMMENT |
| MEDIUM | src/search/extended/objectQuery.ts | 12 | // ── Object ("MongoDB-style") query compiler ─────────────────────── | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | bench/parallel-browser/index.html | 92 | const companies = ['Acme Corp','Globex Inc','Initech','Umbrella Co','Stark Industries','Wayne Enterprises','XYZ Corp | CODE |
| LOW | test/token-search-scenarios.test.js | 333 | name: 'Jane Doe', | CODE |
| LOW | test/extended-search.test.js | 220 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore m | CODE |
| LOW | test/extended-search.test.js | 220 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore m | CODE |
| LOW | docs/.vitepress/theme/components/WorkerDemo.vue | 99 | const companies = ['Acme Corp','Globex Inc','Initech','Umbrella Co','Stark Industries','Wayne Enterprises','XYZ Corp','Q | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | tsdown.config.ts | 81 | // | COMMENT |
| LOW | src/search/token/InvertedIndex.ts | 1 | import type { Analyzer } from './analyzer' | COMMENT |
| LOW | src/search/extended/matchers.ts | 221 | // | COMMENT |
| LOW | src/workers/FuseWorker.ts | 41 | // the timing of the dual shim the old Rollup build emitted into the CJS output. | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | src/search/token/InvertedIndex.ts | 134 | export function removeAndShiftInvertedIndex( | CODE |
| LOW | src/search/extended/matchers.ts | 264 | export function negatedMatcherDefForOperator( | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | docs/.vitepress/theme/components/PerfDemo.vue | 101 | // Step 1: Generate data and measure index creation | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | docs/.vitepress/theme/components/PerfDemo.vue | 101 | // Step 1: Generate data and measure index creation | COMMENT |