com.sweaxizone.w3c.extension

Various global utilities that are not included in the ECMAScript and WHATWG/W3C APIs. Not focusing on web DOM APIs for now, as I plan to use this for other purposes.

Getting started

Clutter the global object by using the following import statement:

import "com.sweaxizone.w3c.extension";

Short-augmented events

The following class defines play and stop events.

// media player
class MediaPlayer extends SAEventTarget {
    // declare events
    declare [EventRecord]: {
        play: MediaPlayerEvent,
        stop: MediaPlayerEvent,
    };
}

Extending MediaPlayer with more events:

// media player
class MoreSpecializedPlayer extends MediaPlayer {
    // declare events
    declare [EventRecord]: MediaPlayer[typeof EventRecord] & {
        // more events...
    };
}

Note that event types must implement the Event interface.

Other additions

• assert
• AssertionError
• trace(...) (equivalent to console.log())
• etrace(...) (equivalent to console.error())
• Math.clamp(value, from, to)
• BigInt.min(...)
• BigInt.max(...)
• SAByteArray (like Adobe Flash's ByteArray)
• isXMLName(argument) (like E4X's isXMLName())
• Namespace (like E4X's Namespace)
• QName (like E4X's QName)
• Iterator.prototype.length()
• Chars
• String.prototype.chars()

License

Apache 2.0