Function isWritableStream

lib/stdio/type.js:147–147

const isReadableStream = value => Object.prototype.toString.call(value) === '[object ReadableStream]';
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);