Iterator. electron - Javascript - Uncaught (in promise) TypeError: Failed to Content available under a Creative Commons license. An object implements the async iterable protocol when it implements the following methods: A zero-argument function that returns an object, conforming to the async iterator protocol. It's been around since Chrome 8, FF 6, and IE 10 but has never shipped in Safari, and likely never will. How to properly launch an animation one time when the element on view with React? Extracting arguments from a list of function calls. Callbacks / Callables. It is up to the programmer to know which is the case. Calling a generator produces an iterable . 'red', 'yellow', 'green') Object colormap is used to retrieve color from color name and names definitions can be found at this link. in order to be iterable, an object must implement the @@iterator method, meaning that the object (or one of the objects up its prototype chain) must have a property with a @@iterator key which is available via constant symbol.iterator: property value [symbol.iterator] the iterator calls this function until the returned value is equal to the iterable must be a sequence, an iterator, or some other object which supports iteration. 1. Generators are functions you call to produce an iterable object. Content available under a Creative Commons license. 1. typeerror: 'list' object is not callable. How I can fix this and save the data to a video file correctly? What does 'They're at four. String, Array, TypedArray, Map, Set, and Segments (returned by Intl.Segmenter.prototype.segment()) are all built-in iterables, because each of their prototype objects implements an @@iterator method. Generators are functions you call to produce an iterable object. An object is iterable if it defines its iteration behavior, such as what values are looped over in a forof construct. Everything you do is synchronous. An object must implement the @@iterator method to be iterable, which means that the object (or one of the objects in its prototype chain) must have a property with a @@iterator key accessible through constant [Symbol.iterator], it further has the next () method for every object. Javascript - Uncaught (in promise) TypeError: Failed to construct 'Blob