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IDE Supported Features

Pyrefly’s language server powers a complete editing experience while fully disabling Pylance, ensuring no interference between checkers.

Each feature below links to the official LSP specification and shows what’s currently supported by Pyrefly.

Go to definition​

Jump to where a symbol is declared with a click or F12.

Find references​

List all usages of a symbol across your codebase.

Document symbols​

See an outline of all top-level items in the current file.

Workspace symbols​

Search globally for functions, classes, and variables.

Hover​

See type info and docstrings when hovering over code.

Document highlights​

Highlights all other instances of the symbol under your cursor.

Signature help​

Live function signatures as you type, with parameter hints.

Completion​

Autocomplete suggestions for project-specific symbols and imports.

Rename​

Safely rename symbols project-wide.

Diagnostics​

Type errors and warnings from Pyrefly’s checker appear in the diagnostics pane ("Problems" pane in VSCode).

Semantic tokens​

Rich syntax highlighting based on token type and origin.

Inlay hints​

Inline hints for types, parameter names, and return values. This is enabled by default; you can disable them using the VSCode Setting.

Notebook support​

Works with Jupyter and notebook-style cells.

Planned features​

See planned features and request your own on GitHub.