Support type narrowing for non-callable node

[Xvezda]

• Fix tests
• Type narrowing for non-callable node

[Copilot]

Pull Request Overview

This PR fixes existing tests for the no-undocumented-throws rule and adds type‐based narrowing so that calls returning generator‐like types are skipped.

• Updated and added several test scenarios to exercise promise chains, getters/setters, and union‐typed methods.
• Enhanced getCalleeDeclaration in src/utils.js to handle declarations arrays and multiple symbol declarations.
• Modified the no-undocumented-throws rule to early‐return on call/new expressions whose return type is generator-like.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
tests/rules/no-undocumented-throws.test.js	Fixed failing tests, removed outdated JSDoc, and added new test cases.
src/utils.js	Improved resolution of declaration from TypeScript symbols.
src/rules/no-undocumented-throws.js	Added a switch to skip calls/new expressions returning generator types.

[Copilot]

This test removed the @throws JSDoc but does not specify an errors expectation, so it will incorrectly pass. Add errors: [{ messageId: 'missingThrowsTag' }] to this test case to assert the missing tag is reported.

[Copilot]

[nitpick] Although you guard for declarations?.length above, consider capturing const decls = type.symbol.declarations to avoid reaccessing the optional chain—this also makes the assignment clearer and prevents any future undefined access.

Suggested change

	// If there are multiple declarations, we take the first one.
	declaration = type.symbol.declarations[0];
	const decls = type.symbol.declarations;
	// If there are multiple declarations, we take the first one.
	declaration = decls[0];

[Copilot]

[nitpick] Generator-like checks only run when the declaration is in tsNodeToESTreeNodeMap. If the signature isn’t mapped there, generator return types won’t be skipped. Consider obtaining the signature unconditionally or adjusting the guard.

Suggested change

	if (services.tsNodeToESTreeNodeMap.has(calleeDeclaration)) {
	const signature = getCallSignature(
	services,
	services.tsNodeToESTreeNodeMap.get(calleeDeclaration)
	);
	const returnType = signature?.getReturnType();
	if (returnType && isGeneratorLike(returnType)) return;
	const returnType = signature?.getReturnType();
	const signature = checker.getResolvedSignature(calleeDeclaration);
	if (signature) {
	const returnType = signature.getReturnType();