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Support for <code>ty_extensions</code>

Status: Open.

#2243 In facebook/pyrefly;

· jorenham opened on Jan 28, 2026

Pyrefly extension not supported for VSCode "browser" mode (vscode.dev)

language-serverIssues specific to our IDE integration rather than type checkingIssues specific to our IDE integration rather than type checking

Status: Open.

Feature

#2240 In facebook/pyrefly;

· javabster opened on Jan 27, 2026

Report overall completeness in <code>pyrefly report</code>

help wantedLarger than "good first issue", but still well-defined and ready for someone to pick upLarger than "good first issue", but still well-defined and ready for someone to pick up

Status: Open.

Feature

#2239 In facebook/pyrefly;

· yangdanny97 opened on Jan 27, 2026

Language Server Panic (Exit Code 101) on startup (Django 5.0.14 project)

crash

django

questionFurther information is requestedFurther information is requested

typechecking

Status: Open.

Bug

#2238 In facebook/pyrefly;

· Monshiy opened on Jan 27, 2026

Incorrectly infering <code>str</code> as <code>Never</code>

needs-discussionAn issue where it's not clear whether there is a bug or we are behaving as expected.An issue where it's not clear whether there is a bug or we are behaving as expected.

Status: Open.

#2237 In facebook/pyrefly;

· Stream29 opened on Jan 27, 2026

Other non-pyrefly ignore portions get removed with --remove-unused-ignores

Status: Open.

Bug

#2236 In facebook/pyrefly;

· nth10sd opened on Jan 27, 2026

unexpected <code>tuple[]</code> behavior

needs-discussionAn issue where it's not clear whether there is a bug or we are behaving as expected.An issue where it's not clear whether there is a bug or we are behaving as expected.

typechecking

wontfixThis will not be worked onThis will not be worked on

Status: Open.

Task

#2235 In facebook/pyrefly;

· jorenham opened on Jan 27, 2026

code action to auto fill in parameters

language-serverIssues specific to our IDE integration rather than type checkingIssues specific to our IDE integration rather than type checking

Status: Open.

Feature

#2230 In facebook/pyrefly;

· asukaminato0721 opened on Jan 26, 2026

[umbrella] Pyrefly should probably respect annotations better

epicAn issue that is an umbrella for work tracked in other issuesAn issue that is an umbrella for work tracked in other issues

typechecking

Status: Open.

Bug

#2227 In facebook/pyrefly;

· stroxler opened on Jan 25, 2026

fastapi support

questionFurther information is requestedFurther information is requested

Status: Open.

Feature

#2224 In facebook/pyrefly;

· asukaminato0721 opened on Jan 25, 2026

urllib.request.urlopen() type is unknown

typechecking

Status: Open.

Bug

#2221 In facebook/pyrefly;

· user202729 opened on Jan 25, 2026

ENH: Support slack variables (lower bound emulation)

needs-discussionAn issue where it's not clear whether there is a bug or we are behaving as expected.An issue where it's not clear whether there is a bug or we are behaving as expected.

typechecking

Status: Open.

Feature

#2220 In facebook/pyrefly;

· randolf-scholz opened on Jan 24, 2026