A JavaScript PDF generation library for Node and the browser
This report summarizes scanner evidence for foliojs/pdfkit, a JavaScript project with 10,728 GitHub stars. SynthScan examined 154,255 lines of code across 200 source files, recording 45 pattern matches distributed across 5 syntactic categories. The legacy adjusted pattern signal is 0.7 (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? 6 finding(s).
Are imports declared and package/API names verified? 37 finding(s).
Are wrappers, guards, and repeated structures necessary? 3 finding(s).
Which changes need focused human review? 45 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 45 distinct pattern matches across 5 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 |
|---|---|---|---|---|
| CRITICAL | lib/document.js | 235 | this._root.data.Names.data.Dests.add(name, args); | CODE |
| CRITICAL | lib/document.js | 251 | this._root.data.Names.data.EmbeddedFiles.add(name, ref); | CODE |
| CRITICAL | lib/document.js | 262 | this._root.data.Names.data.JavaScript.add(name, data); | CODE |
| CRITICAL | lib/mixins/acroform.js | 272 | this._root.data.AcroForm.data.Fields.forEach((fieldRef) => { | CODE |
| CRITICAL | lib/mixins/acroform.js | 364 | this._root.data.AcroForm.data.Fields.push(fieldRef); | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | tests/unit/line_wrapper.spec.js | 253 | const sentence = 'lorem ipsum dolor sit amet consectetur adipiscing '; | CODE |
| LOW | tests/unit/line_wrapper.spec.js | 253 | const sentence = 'lorem ipsum dolor sit amet consectetur adipiscing '; | CODE |
| LOW | tests/visual/table.spec.js | 87 | text: 'rowspan set to 3\nLorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor', | CODE |
| LOW | tests/visual/table.spec.js | 87 | text: 'rowspan set to 3\nLorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor', | CODE |
| LOW | tests/visual/table.spec.js | 386 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent laoreet pulvinar velit, at interdum vel | CODE |
| LOW | tests/visual/table.spec.js | 386 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent laoreet pulvinar velit, at interdum vel | CODE |
| LOW⚡ | tests/visual/text.spec.js | 17 | 'Justified aligned text - Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus.', | CODE |
| LOW⚡ | tests/visual/text.spec.js | 17 | 'Justified aligned text - Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus.', | CODE |
| LOW⚡ | tests/visual/text.spec.js | 27 | 'Text with soft hyphen - Lorem ipsum dolor sit amet, consectetur adipiscing elit. Lo ip\u00ADsum', | CODE |
| LOW⚡ | tests/visual/text.spec.js | 27 | 'Text with soft hyphen - Lorem ipsum dolor sit amet, consectetur adipiscing elit. Lo ip\u00ADsum', | CODE |
| LOW | tests/visual/text.spec.js | 164 | let text = `Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et | CODE |
| LOW | tests/visual/text.spec.js | 164 | let text = `Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et | CODE |
| LOW | docs/text.md | 46 | const lorem = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ip | CODE |
| LOW | docs/text.md | 46 | const lorem = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ip | CODE |
| LOW | docs/text.md | 123 | const lorem = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ips | CODE |
| LOW | docs/text.md | 123 | const lorem = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ips | CODE |
| LOW⚡ | docs/generate_website.js | 34 | // shared lorem ipsum text so we don't need to copy it into every example | COMMENT |
| LOW⚡ | docs/generate_website.js | 36 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW⚡ | docs/generate_website.js | 36 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW⚡ | docs/generate.js | 104 | // shared lorem ipsum text so we don't need to copy it into every example | COMMENT |
| LOW⚡ | docs/generate.js | 106 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW⚡ | docs/generate.js | 106 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW | docs/table.md | 110 | text: "rowspan set to 3\nLorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor", | CODE |
| LOW | docs/table.md | 110 | text: "rowspan set to 3\nLorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor", | CODE |
| LOW | examples/kitchen-sink.js | 56 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW | examples/kitchen-sink.js | 56 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW | examples/kitchen-sink-accessible.js | 172 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW | examples/kitchen-sink-accessible.js | 172 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW | examples/browserify/browser.js | 7 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW | examples/browserify/browser.js | 7 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW | examples/webpack/src/index.js | 13 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| LOW | examples/webpack/src/index.js | 13 | 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam in suscipit purus. Vestibulum ante ipsum primis in fau | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| MEDIUM | lib/table/size.js | 287 | // A════════════════════F════════════════════B | COMMENT |
| MEDIUM | lib/table/size.js | 336 | // D════════════════════H════════════════════C | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | lib/mixins/acroform.js | 201 | }; | COMMENT |
| LOW | lib/table/size.js | 281 | COMMENT | |
| LOW | lib/table/size.js | 301 | // ║ ■ ■ ║ | COMMENT |
| LOW | lib/table/size.js | 321 | // ║ ■ ■║ | COMMENT |
| LOW | lib/table/size.js | 341 | // | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | tools/afm-converter.js | 227 | function createStandardGlyphNamesModule() { | CODE |