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Semantics issue around <code>__len</code> metamethod macro and <code>is {X}</code>

Status: Open.

#1031 In teal-language/tl;

· mtdowling opened on Sep 21, 2025

Feature Request: Allow records to also be tuples

Status: Open.

#1029 In teal-language/tl;

· JoshieGemFinder opened on Sep 10, 2025

Constructing untyped tables throws unnecessary "cannot discriminate a union between multiple table types"

Status: Open.

#1026 In teal-language/tl;

· uramer opened on Aug 17, 2025

internals: remove duplicate entries from interface_list

Status: Open.

#1018 In teal-language/tl;

· hishamhm opened on Jul 17, 2025

Multiple-arity generic params

Status: Open.

#1015 In teal-language/tl;

· Frityet opened on Jul 4, 2025

Compiler option to warn when non-boolean values used in if statements

Status: Open.

#1014 In teal-language/tl;

· svermeulen opened on Jul 4, 2025

Teal should give a hint about using <code>local type</code> for <code>require</code>

feature requestNew feature or requestNew feature or request

Status: Open.

#1013 In teal-language/tl;

· hishamhm opened on Jul 3, 2025

Unable to extend the methods of string type

Status: Open.

#1004 In teal-language/tl;

· cyril0124 opened on Jun 6, 2025

Cannot index a SomeType | nil even when using and to check for nil

nil

semanticsUnexpected or unsound behaviorsUnexpected or unsound behaviors

Status: Open.

#1000 In teal-language/tl;

· ErickProgramer opened on May 31, 2025

"attempt to index a nil value (field 'declared_at')" when parsing global type alias

Status: Open.

#998 In teal-language/tl;

· luisvsm opened on May 26, 2025

Integer doesn't behave as a subtype of number when used inside generic signatures - "got integer, expected number"

semanticsUnexpected or unsound behaviorsUnexpected or unsound behaviors

Status: Open.

#989 In teal-language/tl;

· dashdotdashdot opened on May 20, 2025

Cannot use semicolon after return statement

bugSomething isn't workingSomething isn't working

good first issueGood for newcomersGood for newcomers

Status: Open.

#976 In teal-language/tl;

· overcrook opened on May 13, 2025