Function isWritableDOMStream

docs/app/js/sanddance-app.js:55306–55308

(x)

    return typeof Blob !== "undefined" && x instanceof Blob;
};
var isWritableDOMStream = function isWritableDOMStream(x) {
    return isObject(x) && isFunction(x.abort) && isFunction(x.getWriter);
};
var isReadableDOMStream = function isReadableDOMStream(x) {
    return typeof ReadableStream !== "undefined" && x instanceof ReadableStream || isObject(x) && isFunction(x.tee) && isFunction(x.cancel) && isFunction(x.getReader);
};