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Description
Before You File a Proposal Please Confirm You Have Done The Following...
- I have searched for related issues and found none that match my proposal.
- I have searched the current rule list and found no rules that match my proposal.
- I have read the FAQ and my problem is not listed.
Relevant Package
scope-manager
My proposal is suitable for this project
- I believe my proposal would be useful to the broader TypeScript community (meaning it is not a niche proposal).
Description
While working on #1991, we discovered that there's no way currently to detect if a method signature uses this. The reason is that this:
interface X {
foo(): this;
}Is not transformable to this:
interface X {
foo: () => this;
}While I don't exactly understand the assignability differences and what this means in each case, my understanding is we want to look for method signatures that reference this, but this has to refer to the type bound by the method, so we still keep the autofix for:
interface X {
foo(): (this: Y) => this;
}Therefore, the best way is to track this in the scope manager, similar to how we automatically inject arguments for FunctionScope. In fact, for the code above, we already track this as a normal variable.
Additional Info
No response