The Challenge
FLIN needed a complete UI component library. Not "import from npm" -- compiled directly into the binary. When you write in FLIN, the component exists because the compiler knows it, not because you installed a package.
The scope: 180 components across 14 categories. Buttons, inputs, modals, charts, data tables, navigation, layout, typography, feedback, e-commerce templates, and more.
The Architecture: Three-Level Component Hierarchy
FLIN components follow a strict hierarchy:
1. HTML native (lowercase) -- Built-in components use PHF (perfect hash function) for O(1) lookup at compile time. No runtime scanning, no registration. Session 282b used 5 Claude agents working simultaneously to create 40 showcase pages with zero conflicts. Each agent owned a category, produced isolated files, and the results merged cleanly. This is the manual agent methodology in practice: Thales assigns work boundaries, each agent executes within its scope, results are reviewed at the gate before merge. Every component inherits from a single token system: Change a token, every component updates. No "find and replace across 180 files." 180 components. 148 showcase pages. Compiled into the binary. Zero npm dependencies. Zero build step. One command: A developer using FLIN gets a complete enterprise UI library on day one, without installing anything., -- standard HTML elements
2. FLIN built-in (PascalCase) -- , The Phased Rollout
Phase Category Components 1-3 Basic Button, Input, Textarea, Select, Switch, Checkbox, Radio 4-6 Display Card, Badge, Avatar, Tag, Stat, Timeline, Comment 7-9 Feedback Toast, Modal, Alert, Popconfirm, Progress, Skeleton 10-11 Advanced Forms DatePicker, RichTextEditor, ImageUpload, ColorPicker 12-14 Templates ProductCard, CartItem, PricingToggle, ChatBubble, Dashboard Parallel AI Agents in Action
The Design Token System
The Result
flin dev.Responses