✨ Notes-It Editor

A schema-enforced, block-based editor engine inspired by Notion — built from first principles.

Not a UI experiment. An editor engine.

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🧠 What is Notes-It?

Notes-It is a custom block editor engine built without ProseMirror, Lexical, Slate, or TipTap.

It focuses on:

• Schema guarantees
• Deterministic state
• Correct cursor behavior
• Block-level correctness
• Editor-engine architecture, not hacks

This project explores how modern editors actually work — not just how they look.

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🚀 Core Features

🧱 Block-Based Architecture

Each block is a real semantic node with enforced behavior:

• Paragraph
• Heading (level-based)
• List (bullet & numbered)
• Code block (atomic)
• Quote
• Divider (atomic)
• Image (atomic, planned)
• Draw.io diagram (planned)

No block is “just CSS”.

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🔒 Schema-Enforced State

Invalid document states are unrepresentable by design.

• Divider blocks can never contain text
• Code blocks cannot contain formatting
• Empty documents always normalize to a paragraph
• Lists normalize safely when exited
• Blocks auto-recover via global normalization

This eliminates entire classes of editor bugs.

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✍️ Inline Editing (Model-Driven)

Inline content is stored as structured nodes:

InlineNode {
  id: string
  text: string
  marks: Mark[]
}