Function addTypesToIntersection

test/fixtures/snapshot/typescript.js:61464–61470

(typeSet, includes, types)

        // Add the given types to the given type set. Order is preserved, freshness is removed from literal
        // types, duplicates are removed, and nested types of the given kind are flattened into the set.
        function addTypesToIntersection(typeSet, includes, types) {
            for (var _i = 0, types_12 = types; _i < types_12.length; _i++) {
                var type = types_12[_i];
                includes = addTypeToIntersection(typeSet, includes, getRegularTypeOfLiteralType(type));
            }
            return includes;
        }
        function removeRedundantPrimitiveTypes(types, includes) {
            var i = types.length;
            while (i > 0) {