Dart References

Show reference counts for Dart symbols directly in the editor using CodeLens, with optional warnings for unused functions and methods.

Requirements

• VS Code 1.100.0+
• A Dart language server (install the official Dart/Flutter VS Code extension)

How It Works

• Uses document symbols to find Dart functions, classes, methods, constructors, variables, and enums.
• For each symbol, queries references and shows a CodeLens label.
• If a function or method has zero references, a warning diagnostic is added.

Configuration

Settings are under dartReferences:

• dartReferences.enable: Enable/disable CodeLens and diagnostics (default: true).
• dartReferences.referencesLabel: Label used for non-zero reference counts (default: references).
• dartReferences.zeroReferencesLabel: Label used for zero references (default: No references).
• dartReferences.ignoredMethods: Method names to ignore (default: Flutter lifecycle and common overrides).

Notes

• Reference counts rely on the Dart language server; results may be delayed in large files.
• Ignored methods are matched by name only (not by class or signature).