microsoft/TypeScript
1
0
Fork 0
mirror of https://github.com/microsoft/TypeScript.git synced 2026-06-14 07:02:44 -05:00
Code Issues Packages Projects Releases 212 Wiki Activity

With --strictFunctionTypes, always use strict variance for strict subtype relation

Browse Source
This commit is contained in:
Anders Hejlsberg
2020-12-17 06:33:22 -10:00
parent 77b5139cb0
commit 3545dcb25a
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/compiler/checker.ts
View File

@@ -16231,7 +16231,7 @@ namespace ts {
return Ternary.False;
}
const strictVariance = !(checkMode & SignatureCheckMode.Callback) && strictFunctionTypes && (isStrictSignature(target) || isStrictSignature(source));
const strictVariance = !(checkMode & SignatureCheckMode.Callback) && strictFunctionTypes && (checkMode & SignatureCheckMode.StrictArity || isStrictSignature(target));
let result = Ternary.True;
const sourceThisType = getThisTypeOfSignature(source);