v4.2.0

lightpanda-io/browserv4.2.0Jul 20, 2025by ravitemer

AI Summary

Enhanced configuration compatibility with VS Code, supporting the `.vscode/mcp.json` format, JSON5 syntax, and specific environment variable syntax.

Key Highlights

Full support for `.vscode/mcp.json` configuration
JSON5 support for comments and trailing commas
VS Code environment variable syntax support

New Features

VS Code Configuration Compatibility
JSON5 support for config files
VS Code environment variable syntax support
Seamless migration path for existing config files

Full Release Notes


### Added

- **VS Code Configuration Compatibility**: Full support for `.vscode/mcp.json` configuration format
  - Support for `"servers"` key alongside existing `"mcpServers"` key
  - VS Code-style environment variable syntax: `${env:VARIABLE_NAME}`
  - VS Code predefined variables: `${workspaceFolder}`, `${userHome}`, `${pathSeparator}`, `${workspaceFolderBasename}`, `${cwd}`, `${/}`
  - VS Code input variables via `MCP_HUB_ENV`: support for `${input:variable-id}` syntax
  - JSON5 support for config files: comments and trailing commas now allowed
  - Seamless migration path: existing `.vscode/mcp.json` files work directly with MCP Hub

### Enhanced

- **Configuration System**: Enhanced environment variable resolution with VS Code compatibility
  - Proper priority system: predefined variables → process.env → MCP_HUB_ENV
  - Predefined variables available for placeholder resolution but not passed to server environments
  - Comprehensive test coverage for all VS Code variable types and scenarios