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Type indexing with string literals starting with __ does not work #14268
Description
TypeScript Version: 2.3.0-dev.20170223
Code
It's very likely that this is already reported, but I couldn't find it after a quick search through the issues.
type Foo = {
bar: string
__typename: string
}
type A = Foo["bar"] // ok
type B = Foo["__typename"] // Property '__typename' does not exist on type 'Foo'.Expected behavior:
Type B should be string.
Actual behavior:
Error is thrown.
Activity
guncha commentedon Feb 23, 2017
I did find an older similar issue: #8614
Lo and behold:
remove double undescore
weswigham commentedon Jul 6, 2017
This should be fixed by #16915