JSON LSP Setup

This command will configure your JSON development environment with vscode-json-language-server and essential tools.

Prerequisites Check

First, verify Node.js is installed:

node --version
npm --version

Installation Steps

1. Install vscode-json-language-server

npm install -g vscode-langservers-extracted

This package includes vscode-json-language-server along with HTML, CSS, and ESLint language servers.

2. Install Development Tools

# JSON validation and processing
brew install jq

# Formatting
npm install -g prettier

3. Verify Installation

vscode-json-language-server --version
jq --version
prettier --version

4. Enable LSP in Claude Code

export ENABLE_LSP_TOOL=1

Verification

Test the LSP integration:

# Create a test file
cat > test_lsp.json << 'EOF'
{
  "name": "test",
  "version": "1.0.0",
  "features": [
    "validation",
    "formatting"
  ]
}
EOF

# Run jq validation
jq empty test_lsp.json

# Run prettier
prettier --write test_lsp.json

# Clean up
rm test_lsp.json