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This commit is contained in:
Anders Hejlsberg 2017-09-21 08:52:22 -07:00
parent f8e2cc1391
commit 589e1f440c
1 changed files with 2 additions and 2 deletions
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src/compiler/checker.ts
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@ -9417,8 +9417,8 @@ namespace ts {
if (getObjectFlags(source) & ObjectFlags.Reference && getObjectFlags(target) & ObjectFlags.Reference && (<TypeReference>source).target === (<TypeReference>target).target &&
!(source.flags & TypeFlags.MarkerType || target.flags & TypeFlags.MarkerType)) {
// We have type references to the same generic type, and the type references are not marker
// type references (which we always compare structurally). Obtain the variance information
// for the type parameters and relate the type arguments accordingly.
// type references (which are intended by be compared structurally). Obtain the variance
// information for the type parameters and relate the type arguments accordingly.
const variances = getVariances((<TypeReference>source).target);
if (result = typeArgumentsRelatedTo(<TypeReference>source, <TypeReference>target, variances, reportErrors)) {
return result;