Hidden Assumptions in maybe
12 assumptions this code never checks · 7 critical · spanning Environment, Contract, Domain, Shape, Ordering, Resource
Every codebase relies on things it never checks. Most of them are routine. CodeSea looked at maybe-finance/maybe and picked out the few most likely to cause trouble. The full list is just below.
Most of what this code assumes is routine. These 3 are the ones most likely to cause trouble here. The rest are minor; they're under "Show everything".
If Stimulus controller file is named differently or naming convention changes, close button clicks fail silently with no visible error to users
Form submission buttons inside dialogs can submit invalid data or trigger navigation away from dialog without proper cleanup, leaving background modals stuck open
If any controller file has syntax errors, wrong extension, or doesn't export default class, entire Stimulus application fails to initialize breaking all interactive features
Show everything (9 more)
Placement string values like 'bottom-end' match exact Floating UI positioning API without validation
If this fails: Typos in placement ('botom-end') cause menus to render in default position instead of intended location, creating confusing UX where menus appear far from triggers
app/components/DS/menu.rb:initialize placement parameter
Header block content is HTML-safe and doesn't contain malicious scripts when passed through capture(&block)
If this fails: User-provided content in dialog headers could inject XSS attacks if content bypasses Rails sanitization elsewhere in the stack
app/components/DS/dialog.rb:renders_one :header block parameter
All DS::Button instances accept arbitrary data attributes and merge them properly with existing data attributes
If this fails: If DS::Button component overwrites data attributes instead of merging, dialog close functionality breaks as data-action gets lost
app/components/DS/dialog.rb:DS::Button.new with data actions
Array elements are rendered in order with subtitle always appearing between title and block content
If this fails: If subtitle is conditionally nil but block content exists, header layout breaks as subtitle spacing disappears creating visual inconsistency
app/components/DS/dialog.rb:safe_join([ title_div, subtitle, block_content ])
Stimulus target naming with double underscores gets properly converted to dashes in DOM and matches controller target definitions
If this fails: If target name conversion fails, menu button clicks don't register with Stimulus controller leaving menus unopenable
app/components/DS/menu.rb:data: { DS__menu_target: 'button' }
Application can handle loading all Stimulus controllers upfront without memory or performance constraints
If this fails: In large applications, eager loading all controllers increases initial page load time and memory usage even for pages that don't need most controllers
app/javascript/controllers/index.js:eager loading strategy
Offset value of 12 represents pixels and matches the unit system expected by Floating UI positioning library
If this fails: If Floating UI expects different units (em, rem, %) the menu positioning will be incorrect, potentially overlapping triggers or appearing off-screen
app/components/DS/menu.rb:offset parameter
Width classes like 'lg:max-w-[300px]' are valid Tailwind CSS classes and will be included in the compiled CSS
If this fails: If Tailwind CSS doesn't recognize arbitrary values or responsive prefixes, dialogs render without width constraints causing layout issues on different screen sizes
app/components/DS/dialog.rb:WIDTHS hash constants
DS::MenuItem component exists and is properly defined with compatible interface
If this fails: If DS::MenuItem is missing or has incompatible initialize signature, menu item rendering fails with obscure error messages
app/components/DS/menu.rb:renders_many :items, DS::MenuItem
See the full structural analysis of maybe: the pipeline, data models, and system behavior that put these assumptions in context.
Full analysis of maybe-finance/maybe →Frequently Asked Questions
What does maybe assume that could break in production?
The one most likely to cause trouble: The data-action attribute format 'DS--dialog#close' assumes Stimulus controller naming conventions where double dash becomes single dash in DOM If this fails, If Stimulus controller file is named differently or naming convention changes, close button clicks fail silently with no visible error to users
How many hidden assumptions does maybe have?
CodeSea found 12 assumptions maybe relies on but never validates, 7 of them critical, spanning Environment, Contract, Domain, Shape, Ordering, Resource. Most are routine — the analysis flags the two or three most likely to actually bite.
What is a hidden assumption?
Something the code depends on but never checks: a data shape, an ordering, an environment condition, a scale limit, or a contract with another service. It holds until the world it runs in changes, then fails silently.