chore(deps-dev): Bump pyrefly from 0.64.1 to 1.0.0

[dependabot]

Bumps pyrefly from 0.64.1 to 1.0.0.

Release notes

Sourced from pyrefly's releases.

Pyrefly v1.0.0

Status: STABLE Release date: 12 May 2026

Pyrefly v1.0.0 is here!

We're thrilled to announce that Pyrefly has reached its stable 1.0.0 release! Since our beta release in November 2025, we've fixed hundreds of bugs, improved performance, and added lots of new functionality. Pyrefly is already the default type checker for Instagram at Meta and has been adopted by other large production codebases like PyTorch and JAX. Today, we're making it official: Pyrefly is production ready.

This would not have been possible without our amazing open-source community. To everyone who filed GitHub issues, submitted pull requests, gave us feedback at conferences, or joined us on Discord: thank you. Your contributions shaped this release.

These release notes cover the major highlights since our beta release. For the full history, see our past weekly release notes.

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Performance Improvements

We've continued to push Pyrefly's performance since the speed improvements we shared in February. Since beta:

• 2–125x faster updated diagnostics after saving a file (no, that’s not a typo!). Thanks to fine-grained dependency tracking and streaming diagnostics, updates now consistently arrive in milliseconds
• 20–36% faster full type checking on large projects like PyTorch and Pandas
• 2–3x faster initial indexing when Pyrefly first scans your project
• 40–60% less memory usage during both indexing and incremental type checking

(Tested on an M4 Macbook Pro using open-source benchmarks from type_coverage_py and ty_benchmark.)

Compare the performance of Pyrefly and other Python type checkers on our regularly updated benchmarking suite, which runs against 53 popular Python packages.

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Configuration Presets

A new preset configuration option provides named bundles of error severities and behavior settings.

Preset	Description
off	Silences all diagnostics. Useful for IDE-only users or if you want total control of which errors are enabled.
basic	Low-noise, high-confidence diagnostics only (syntax errors, missing imports, unknown names, etc.). Ideal for unconfigured projects or IDE-first users.
legacy	For codebases migrating from mypy. Disables checks mypy doesn't have. pyrefly init now emits this preset automatically when migrating from a mypy config.
default	The standard Pyrefly experience. Equivalent to having no preset.
strict	Enables additional strict checks on top of the default preset. For users who want to avoid Any types in their codebase.

See the configuration docs for details.

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Onboarding Experience

We’ve made improvements to the out-of-the-box experience for projects without a pyrefly.toml.

• Automatic config synthesis — if you have a mypy or pyright config, Pyrefly automatically migrates your settings and synthesizes an appropriate in-memory Pyrefly config. (This is the same migration that pyrefly init would commit to disk.)

... (truncated)

Commits

• 2362c07 Bump to version 1.0.0 with release notes
• 471bb83 Prep README.md and pyproject.toml for V1
• f2c6df4 Use vanity URLs for unconfigured-config upsell
• d5bf386 Fix TSP extra IPC connection shutdown hang (#3287)
• e0a91be do not send snapshotchanged to extra connections
• 3df562c extract TypeErrorDisplayStatus into its own module
• See full diff in compare view

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