class ConcatIterator extends FastIteratorBase<T>Re-exportimport { ConcatIterator } from "https://deno.land/x/rimbu@0.14.1/stream/custom/index.ts"; ConstructorsnewConcatIterator(source: Stream<T>,otherSources: StreamSource<T>[],streamSourceHelpers: StreamSourceHelpers,)Type ParametersTPropertiesiterator: FastIterator<T>sourceIndex: numberMethodsfastNext<O>(otherwise?: OptLazy<O>): T | O