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Uncalled-function check misses usage of complex property access #41588
Description
Code
Based on chrome-app on Definitely Typed:
var chrome = {
platformKeys: {
subtleCrypto() {
return {
sign() {},
exportKey() { return true }
}
}
}
}
// ok
if (chrome.platformKeys.subtleCrypto().exportKey) {
chrome.platformKeys.subtleCrypto().exportKey
}Expected behavior:
No error
Actual behavior:
Error: "Did you mean to call 'exportKey'?"
Activity
sandersn commentedon Nov 18, 2020
Oleksandr Tarasiuk (@a-tarasyuk) you might be interested in this too.
MartinJohns commentedon Nov 19, 2020
This works as expected with TypeScript 4.2.0-dev.20201119. It provides an error with
strictNullChecksenabled, and provides no error withstrictNullChecksdisabled.sandersn commentedon Nov 19, 2020
There should be no error under any setting since
chrome.platformKeys.subtleCrypto().signis used in the body of theif.Improve uncalled function checks
Improve uncalled function checks (#41599)