DayPicker is a customizable date picker component for React. Add date pickers, calendars, and date inputs to your web applications.
This report summarizes scanner evidence for gpbl/react-day-picker, a TypeScript project with 6,863 GitHub stars. SynthScan examined 96,342 lines of code across 1456 source files, recording 45 pattern matches distributed across 4 syntactic categories. The legacy adjusted pattern signal is 0.5 (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? 44 finding(s).
Are imports declared and package/API names verified? 1 finding(s).
Are wrappers, guards, and repeated structures necessary? 40 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 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.
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | examples/StartEndMonthsShowOutsideDays.tsx | 4 | export function StartEndMonthsShowOutsideDays() { | CODE |
| LOW | examples/MultipleMonthsWithEndMonth.tsx | 4 | export function MultipleMonthsWithEndMonth() { | CODE |
| LOW | scripts/should-publish-release.test.ts | 22 | function createShouldPublishContext( | CODE |
| LOW | scripts/should-publish-release.test.ts | 58 | function createShouldPublishFetchResponse( | CODE |
| LOW | scripts/should-publish-release.test.ts | 73 | describe("shouldPublishRelease", function describeShouldPublishRelease() { | CODE |
| LOW | scripts/publish-packages.ts | 35 | function isPackageVersionMissingError(error: unknown): boolean { | CODE |
| LOW | scripts/publish-packages.ts | 58 | function isPackageVersionPublished(packageInfo: { | CODE |
| LOW | scripts/publish-packages.ts | 80 | function readPackageVersionFromDistTag( | CODE |
| LOW | scripts/publish-packages.ts | 102 | async function waitForDistTagVerificationRetry(): Promise<void> { | CODE |
| LOW | scripts/publish-packages.ts | 108 | async function readPackageVersionFromDistTagWithRetry( | CODE |
| LOW | scripts/release-ci.test.ts | 214 | test("it skips dist-tag verification when recovering already-published versions", async function testRecoverPublishedV | CODE |
| LOW | scripts/publish-packages.test.ts | 65 | beforeEach(function setupPublishPackagesTestState() { | CODE |
| LOW | scripts/publish-packages.test.ts | 104 | test("it returns only workspace packages that still need publishing", function testGetUnpublishedPackages() { | CODE |
| LOW | scripts/publish-packages.test.ts | 182 | test("it rethrows npm view failures that are not missing versions", function testRethrowUnexpectedViewFailure() { | CODE |
| LOW | scripts/publish-packages.test.ts | 210 | describe("verifyPackageDistTags", function describeVerifyPackageDistTags() { | CODE |
| LOW | scripts/release-notes.ts | 6 | function extractChangelogVersionSection( | CODE |
| LOW | scripts/release-notes.ts | 33 | function extractMeaningfulReleaseNotes(section: string): string[] { | CODE |
| LOW | scripts/should-publish-release.ts | 2 | async function fetchAssociatedPullRequests(request: { | CODE |
| LOW | scripts/create-github-release.test.ts | 122 | function createMeaningfulChangelog(packageVersion: string) { | CODE |
| LOW | scripts/create-github-release.test.ts | 133 | function createDependencyOnlyChangelog(packageVersion: string) { | CODE |
| LOW | scripts/create-github-release.test.ts | 145 | function createGitHubFetchResponse( | CODE |
| LOW | scripts/create-github-release.test.ts | 162 | describe("createGitHubRelease", function describeCreateGitHubRelease() { | CODE |
| LOW | scripts/create-github-release.test.ts | 222 | test("it falls back to a generic release body when changelog entries only contain dependency updates", async function | CODE |
| LOW | scripts/create-github-release.test.ts | 288 | test("it rethrows unexpected lookup failures", async function testUnexpectedLookupFailure() { | CODE |
| LOW | scripts/create-github-release.test.ts | 301 | test("it retries transient fetch failures before creating the release", async function testRetryTransientCreateRelease | CODE |
| LOW | …thiopic/src/ethiopic/lib/differenceInCalendarMonths.ts | 10 | export function differenceInCalendarMonths( | CODE |
| LOW | …eact-day-picker/src/utils/convertMatchersToTimeZone.ts | 83 | export function convertMatchersToTimeZone( | CODE |
| LOW | …ct-day-picker/src/helpers/getClassNamesForModifiers.ts | 16 | export function getClassNamesForModifiers( | CODE |
| LOW | …ages/hijri/src/hijri/lib/differenceInCalendarMonths.ts | 3 | export function differenceInCalendarMonths( | CODE |
| LOW | packages/hebrew/src/hebrew/utils/calendarMath.ts | 31 | function hebrewCalendarElapsedDays(year: number): number { | CODE |
| LOW | …es/hebrew/src/hebrew/lib/differenceInCalendarMonths.ts | 4 | export function differenceInCalendarMonths( | CODE |
| LOW | packages/persian/src/noonJalaliDateLib.ts | 36 | export function createJalaliNoonOverrides( | CODE |
| LOW | apps/website/docusaurus.config.ts | 66 | function createApiReferenceRedirects(path: string): string[] { | CODE |
| LOW | apps/website/docusaurus.config.ts | 73 | function createNextVersionRedirects(path: string): string[] { | CODE |
| LOW | apps/website/docusaurus.config.ts | 181 | function currentExamplesAliasPlugin() { | CODE |
| LOW | …/website/examples-v9/StartEndMonthsShowOutsideDays.tsx | 6 | export function StartEndMonthsShowOutsideDays() { | CODE |
| LOW | apps/website/examples-v9/MultipleMonthsWithEndMonth.tsx | 6 | export function MultipleMonthsWithEndMonth() { | CODE |
| LOW | …ebsite/src/components/Playground/shared/queryString.ts | 151 | export function buildPlaygroundQueryString( | CODE |
| LOW | apps/website/src/theme/MDXComponents.tsx | 26 | function getVersionedExampleComponent(name: string): ExampleComponent { | CODE |
| LOW | …src/theme/NavbarItem/VersionedPlaygroundNavbarItem.tsx | 13 | export default function VersionedPlaygroundNavbarItem({ | CODE |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | scripts/build-css.sh | 3 | # Check if the correct number of arguments are provided | COMMENT |
| LOW | scripts/build-css.sh | 12 | # Check if the input file exists | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | test/renderHook.tsx | 1 | // import React from "react"; | COMMENT |
| LOW | .github/workflows/release.yml | 1 | name: changesets release | COMMENT |
| Severity | File | Line | Snippet | Context |
|---|---|---|---|---|
| LOW | …ned_docs/version-8.10.2/api/type-aliases/InputProps.md | 3 | > **InputProps**: `Pick`\<`InputHTMLAttributes`\<`HTMLInputElement`\>, `"onBlur"` \| `"onChange"` \| `"onFocus"` \| `"va | CODE |