Only include unique symbols when getting index types for access checks #23145
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ahejlsberg
approved these changes
Apr 4, 2018
src/compiler/checker.ts
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| } | ||
| else { | ||
| return getUnionType(filter(originalKeys, isTypeString)); | ||
| } |
|
@weswigham please port to release-2.8 as well. |
weswigham
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Apr 5, 2018
microsoft#23145) * Only include unique symbols when getting index types for access checks * Filter all nonstrings * Inline ternary
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Alternative to #23090 that moves towards the
indexoftype we talked about the other day, but is lightweight enough to be more acceptable as a patch. Note that this only removes/fixes symbols -numberliterals from late bound symbols will still be an issue (though they've been an issue for longer and need to have more confusing behavior, so probably should wait for the fullindexofimplementation).