Bind alias ThisProperty assignment declarations #39908
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This is a quick prototype that does the wrong thing at the wrong time with the wrong technique.
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Duplicative and untested, but I think I updated all the places that need updating.
This should have about the same behaviour and is much easier to understand. Also refactor common code a bit.
Once upon a time there was a parent/worker function, but now it's just a single function again. No need for the -Worker suffix.
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This is ready to review now. |
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@typescript-bot user test this |
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The user suite test run you requested has finished and failed. I've opened a PR with the baseline diff from master. |
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In the user tests, all the changes are good! But there aren't as many changes as I thought there would be. I'm not convinced that it's finding all the instances of the pattern. |
| return isThisInitializedDeclaration(symbol?.valueDeclaration); | ||
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| function getIsContextSensitiveOfThisProperty(binaryExpression: BinaryExpression, kind: AssignmentDeclarationKind) { |
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This string of words doesn’t grok for me, maybe because “get” and ”is” are usually mutually exclusive (though I see this is inherited from the caller), and ContextSensitive parses as “context-sensitive” (an adjective), but the “of” makes me think “context” is the noun subject and “sensitive” is the adjective we’re asking about?
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This led to an in-person discussion in which we noticed that the parent getIsContextSensitive... function is a bad member of the getContextualTypeFor... family. I just pushed a commit that makes the whole thing return Type | undefined like the rest.
Even when `this` is aliased, which I mistakenly allowed in #39908.
* No this-property assignments in TS Even when `this` is aliased, which I mistakenly allowed in #39908. * remove errant file
Fixes #39842.
This uses a pretty strict syntactic pattern to find aliases of
this:var name = this(or const or let).