Function isExpandoDeclaration

test/fixtures/snapshot/typescript.js:139983–139994

* ```ts * function f() {} * f.foo = 0; * ``` * * Here, `f` has two declarations: the function declaration, and the identifier in the next line. * The latter is a declaration for `f` because it gives `f` the `SymbolFlags.Namespace` meaning so

(node)

         * up with a more precise definition of what counts as a definition.
         */
        function isExpandoDeclaration(node) {
            if (!ts.isAssignmentDeclaration(node))
                return false;
            var containingAssignment = ts.findAncestor(node, function (p) {
                if (ts.isAssignmentExpression(p))
                    return true;
                if (!ts.isAssignmentDeclaration(p))
                    return "quit";
                return false;
            });
            return !!containingAssignment && ts.getAssignmentDeclarationKind(containingAssignment) === 5 /* AssignmentDeclarationKind.Property */;
        }
        function getDefinitionFromSymbol(typeChecker, symbol, node, failedAliasResolution, excludeDeclaration) {
            var filteredDeclarations = ts.filter(symbol.declarations, function (d) { return d !== excludeDeclaration; });
            var withoutExpandos = ts.filter(filteredDeclarations, function (d) { return !isExpandoDeclaration(d); });