Function isTransformStream

lib/stdio/type.js:149–149

export const isWritableStream = value => Object.prototype.toString.call(value) === '[object WritableStream]';
const isWebStream = value => isReadableStream(value) || isWritableStream(value);
const isTransformStream = value => isReadableStream(value?.readable) && isWritableStream(value?.writable);

const isAsyncIterableObject = value => isObject(value) && typeof value[Symbol.asyncIterator] === 'function';
const isIterableObject = value => isObject(value) && typeof value[Symbol.iterator] === 'function';