Function intersectUnionsOfPrimitiveTypes

test/fixtures/snapshot/typescript.js:61540–61582

(types)

        // first with a union containing an intersection of those primitive types, then remove the
        // other unions and return true. Otherwise, do nothing and return false.
        function intersectUnionsOfPrimitiveTypes(types) {
            var unionTypes;
            var index = ts.findIndex(types, function (t) { return !!(ts.getObjectFlags(t) & 32768 /* ObjectFlags.PrimitiveUnion */); });
            if (index < 0) {
                return false;
            }
            var i = index + 1;
            // Remove all but the first union of primitive types and collect them in
            // the unionTypes array.
            while (i < types.length) {
                var t = types[i];
                if (ts.getObjectFlags(t) & 32768 /* ObjectFlags.PrimitiveUnion */) {
                    (unionTypes || (unionTypes = [types[index]])).push(t);
                    ts.orderedRemoveItemAt(types, i);
                }
                else {
                    i++;
                }
            }
            // Return false if there was only one union of primitive types
            if (!unionTypes) {
                return false;
            }
            // We have more than one union of primitive types, now intersect them. For each
            // type in each union we check if the type is matched in every union and if so
            // we include it in the result.
            var checked = [];
            var result = [];
            for (var _i = 0, unionTypes_2 = unionTypes; _i < unionTypes_2.length; _i++) {
                var u = unionTypes_2[_i];
                for (var _a = 0, _b = u.types; _a < _b.length; _a++) {
                    var t = _b[_a];
                    if (insertType(checked, t)) {
                        if (eachUnionContains(unionTypes, t)) {
                            insertType(result, t);
                        }
                    }
                }
            }
            // Finally replace the first union with the result
            types[index] = getUnionTypeFromSortedList(result, 32768 /* ObjectFlags.PrimitiveUnion */);
            return true;
        }
        function createIntersectionType(types, aliasSymbol, aliasTypeArguments) {
            var result = createType(2097152 /* TypeFlags.Intersection */);
            result.objectFlags = getPropagatingFlagsOfTypes(types, /*excludeKinds*/ 98304 /* TypeFlags.Nullable */);