JSON Patch Generator — VS Code Extension

Generate, apply, and validate RFC 6902 JSON Patches directly inside VS Code.

Features

🔄 Generate Patch

Command: JSON Patch: Generate Patch from Two Files

Compare two JSON files and instantly see the RFC 6902 patch that transforms one into the other. The result appears in a side panel with a one-click Copy to Clipboard button.

• If two JSON files are open in the editor, they'll be offered as quick-pick options.
• Otherwise, an OS file picker opens.

✅ Apply Patch

Command: JSON Patch: Apply Patch to Document

Pick a *.patch.json file and a target JSON document. The patched result opens in a new untitled editor for review before saving.

🔍 IntelliSense for Patch Files

Files named *.patch.json or *-patch.json get:

• Autocomplete for op, path, value, from fields
• Enum suggestions: add, remove, replace, move, copy, test
• Inline error squiggles for missing required fields

Usage

1. Open the Command Palette (Ctrl+Shift+P / Cmd+Shift+P)
2. Type JSON Patch to see all available commands

Or right-click inside any JSON file in the editor for context menu shortcuts.

Related

• JSON Patch Online — the online JSON Patch Generator this extension is based on
• RFC 6902 — JSON Patch specification
• RFC 6901 — JSON Pointer specification

Development

cd vscode-extension
npm install
npm run build          # one-time build
npm run watch          # rebuild on save
npm run compile-check  # type-check only (no emit)

Press F5 in VS Code to launch the Extension Development Host.