Function mapTypeWithAlias

test/fixtures/snapshot/typescript.js:69947–69951

(type, mapper, aliasSymbol, aliasTypeArguments)

            return changed ? mappedTypes && getUnionType(mappedTypes, noReductions ? 0 /* UnionReduction.None */ : 1 /* UnionReduction.Literal */) : type;
        }
        function mapTypeWithAlias(type, mapper, aliasSymbol, aliasTypeArguments) {
            return type.flags & 1048576 /* TypeFlags.Union */ && aliasSymbol ?
                getUnionType(ts.map(type.types, mapper), 1 /* UnionReduction.Literal */, aliasSymbol, aliasTypeArguments) :
                mapType(type, mapper);
        }
        function extractTypesOfKind(type, kind) {
            return filterType(type, function (t) { return (t.flags & kind) !== 0; });
        }