Section Checker

Script to validate that all occurrences of Sections and Loaders (in blocks and pages) have data structures compatible with their TypeScript types.

How to use

Validate all sections and loaders:

deno task validate-blocks

Validate a specific section:

deno task validate-blocks sections/Footer/Footer.tsx

or

deno task validate-blocks sections/Category/CategoryGrid.tsx

You can use relative or absolute paths.

Use custom blocks directory:

By default, the script searches for JSONs in .deco/blocks. You can specify another path:

deno task validate-blocks -blocks /full/path/to/jsons

or

deno task validate-blocks sections/Footer/Footer.tsx -blocks /other/project/.deco/blocks

This allows running the script in one project and validating blocks from another project.

Available flags:

-unused

By default, the script does not show warnings for properties not defined in the types. Use this flag to include them:

deno task validate-blocks -unused

or

deno task validate-blocks sections/Footer/Footer.tsx -unused

-blocks <path> or -b <path>

Specifies a custom path for the directory containing JSON blocks. Defaults to .deco/blocks:

deno task validate-blocks -blocks /full/path/to/jsons

or combined with other flags:

deno task validate-blocks sections/Footer/Footer.tsx -blocks /other/project/.deco/blocks -unused

-rm-vars

⚠️ WARNING: Automatically modifies JSON files!

Removes all properties that are not defined in the types:

deno task validate-blocks -rm-vars

or for a specific section:

deno task validate-blocks sections/Footer/Footer.tsx -rm-vars

The script:

1. Identifies properties in the JSON that don’t exist in the Props interface
2. Removes these properties automatically
3. Saves the modified JSON file

Example:

If the JSON has:

{
  "__resolveType": "site/sections/Footer/Footer.tsx",
  "title": "Footer",
  "teste": "unused value" // <- not in Props interface
}

After running -rm-vars, the JSON becomes:

{
  "__resolveType": "site/sections/Footer/Footer.tsx",
  "title": "Footer"
}

-rm-sections

⚠️ WARNING: Permanently deletes files!

Removes all section/loader files that are not referenced in any JSON:

deno task validate-blocks -rm-sections

The script:

1. Identifies sections/loaders that have no occurrences in JSONs
2. Lists the files that will be removed
3. Asks for confirmation (type sim to confirm)
4. Permanently deletes the files

Example output:

🗑️  Removing unused sections/loaders...

📋 15 file(s) will be removed:

  - sections/Category/CategoryGrid.tsx
  - sections/Institutional/NumbersWithImage.tsx
  - sections/Product/ProductShelf.tsx
  ...

⚠️  This action is irreversible!
Type 'sim' to confirm removal:

Note: This flag only works for full validation (without specifying a file), it doesn’t work when validating a specific section.

What it does

The script:

1. Iterates through all files in sections/ and loaders/
2. Generates the __resolveType for each section/loader
3. Searches for ALL occurrences of that __resolveType in .deco/blocks (including inside pages)
4. Extracts the Props interface from the TypeScript file
5. Deeply validates each occurrence against the types
6. Reports errors and warnings with exact path in the JSON

Features

Intelligent Props Detection

• ✅ Follows re-exports (export { default } from "./other-file")
• ✅ Extracts type from the component parameter exported as default
• ✅ Fallback to interface/type named “Props”
• ✅ Supports type aliases and interfaces
• ✅ Supports utility types (Omit, Pick, Partial)

Deep Validation

• ✅ Primitive types: string, number, boolean, null
• ✅ Arrays with element validation
• ✅ Nested objects recursively
• ✅ Optional properties (?)
• ✅ Union types (string | number)
• ✅ Special types: ImageWidget, Product, RichText, etc
• ✅ Respects @ignore annotation on properties
• ⚠️ Detects extra properties not defined in types (warnings)

Protections

• ✅ Ignores blocks from external apps (vtex, commerce, shopify, etc)
• ✅ Ignores Theme blocks
• ✅ Protection against infinite recursion in circular types

Severity System

• ✅ Valid - Block is correct
• ⚠️ Warning - Props not found OR extra properties not defined in types OR section is not being used (doesn’t fail the build)
• ❌ Error - Required properties missing or incorrect types (fails the build)

File Structure

validate-blocks/
├── main.ts              # Main entrypoint
├── src/
│   ├── type-mapper.ts   # Maps __resolveType to paths
│   ├── ts-parser.ts     # TypeScript parser (extracts Props)
│   ├── validator.ts     # Recursive type validator
│   └── validate-blocks.ts # Orchestrator and reporting
└── README.md            # This documentation

Example Output

🔍 Validating sections and loaders...

✅ sections/Header/Header.tsx - 15 occurrence(s)
✅ sections/Footer/Footer.tsx - 1 occurrence(s)

⚠️  sections/Footer/Footer.tsx - 1 occurrence(s), 2 warning(s)

Footer.json

  - property not defined in types (can be removed) (.deco/blocks/Footer.json:265)
  - property not defined in types (can be removed) (.deco/blocks/Footer.json:273)

❌ sections/Category/CategoryGrid.tsx - 1 occurrence(s), 1 error(s)

Preview%20%2Fsections%2FCategory%2FCategoryGrid.tsx.json

  - "items": required property missing (.deco/blocks/Preview%20%2Fsections%2FCategory%2FCategoryGrid.tsx.json:2)

❌ sections/Sac/Stores.tsx - 2 occurrence(s), 2 error(s)

pages-Lojas-735837.json

  - expected array, received object (.deco/blocks/pages-Lojas-735837.json:57)
  - expected array, received object (.deco/blocks/pages-Lojas-735837.json:73)

═══════════════════════════════════════
📊 SUMMARY
═══════════════════════════════════════
Total sections/loaders: 95
Total occurrences: 284
✅ No issues: 85
⚠️ With warnings: 3
⚠️ Unused: 3
❌ With errors: 4

⚠️  Unused sections:
  - sections/Example/Unused.tsx
  - sections/Test/OldComponent.tsx

❌ Sections with errors:
  - sections/Category/CategoryGrid.tsx (1 error(s))

Note: The script shows the path and line of the JSON file in clickable format (ex: .deco/blocks/pages-Lojas-735837.json:61). In most modern terminals (VSCode, Cursor, iTerm2), you can click directly on the link to open the file at the exact line of the problem.

Usage Examples

Validate all sections

deno task validate-blocks

Validate specific section during development

deno task validate-blocks sections/Header/Header.tsx

Validate specific loader

deno task validate-blocks loaders/Product/categoryTabs.ts

Show unused properties

# All sections with warnings for extra props
deno task validate-blocks -unused

# Specific section with warnings for extra props
deno task validate-blocks sections/Footer/Footer.tsx -unused

Portability

All code is organized in the src folder to facilitate migration to another repository.