Hidden Assumptions in ts-nextjs-tailwind-starter

The className prop contains Tailwind width classes in the format 'w-{value}' and this string matching approach will correctly identify when width is set via CSS

If this fails: If developers use custom CSS classes for width, responsive width classes like 'sm:w-full', or spacing in className like 'w- 64', the widthIsSet detection fails and the component applies inline styles incorrectly, causing layout conflicts

src/components/NextImage.tsx:NextImage

All SVG imports without the ?url query parameter should be converted to React components, and the existing fileLoaderRule.test property contains a RegExp object with a test method

If this fails: If webpack's default SVG handling changes or fileLoaderRule structure differs, the SVG processing logic breaks silently - SVGs might not render as components or the build process could fail with cryptic errors

next.config.js:webpack

The siteConfig.url contains a valid absolute URL and all referenced static assets (/favicon/favicon.ico, /images/og.jpg) exist in the public directory

If this fails: If siteConfig.url is relative or malformed, Next.js metadataBase fails and all OpenGraph/Twitter meta tags generate invalid URLs, breaking social media sharing and SEO

src/app/layout.tsx:metadata

The Next.js Image component will always fire the onLoadingComplete callback when an image finishes loading, even for cached or immediately available images

If this fails: If onLoadingComplete never fires (network issues, image errors, or Next.js behavior changes), images with useSkeleton=true remain stuck in loading state with pulse animation forever

src/components/NextImage.tsx:NextImage

Import paths will match the exact regex patterns defined in the groups array, with @/ paths resolving correctly and relative paths following the ../.. nesting pattern

If this fails: If tsconfig paths change or developers use unconventional import structures, the import sorting produces wrong order or breaks entirely, causing confusing lint errors about import organization

.eslintrc.js:simple-import-sort/imports

The SVG mock file at <rootDir>/src/__mocks__/svg.tsx exists and exports a valid React component that can substitute for all SVG imports during testing

If this fails: If the SVG mock is missing or exports incompatible types, all tests importing SVG files fail with module resolution errors, making the test suite unusable

jest.config.js:moduleNameMapper

The shimmer animation background size of '700px 100%' is appropriate for all skeleton instances regardless of the actual component size

If this fails: For very wide components (>700px), the shimmer effect appears cut off or static, while for narrow components, the animation moves too quickly, creating inconsistent loading experiences

src/components/Skeleton.tsx:backgroundSize

The mode state will only ever contain the literal values 'dark' or 'light' and the toggle logic covers all possible state transitions

If this fails: If mode somehow becomes undefined, null, or any other value through external state management or component errors, the toggle breaks and theme switching stops working

src/app/components/page.tsx:toggleMode

Tailwind width classes are the only valid way to control image width and mixing Tailwind classes with inline width styles is always undesirable

If this fails: Developers cannot use CSS modules, styled-components, or other width-setting approaches with NextImage - the component either applies redundant inline styles or fails to size properly

src/components/NextImage.tsx:widthIsSet

The Logo.svg file exists in the public/svg/ directory and is compatible with the @svgr/webpack transformation rules configured in next.config.js

If this fails: If the SVG file is missing, malformed, or contains unsupported SVG features, the home page fails to render with a module not found error or runtime SVG parsing errors

src/app/page.tsx:Logo

See the full structural analysis of ts-nextjs-tailwind-starter: the pipeline, data models, and system behavior that put these assumptions in context.

Full analysis of theodorusclarence/ts-nextjs-tailwind-starter →