This fragmentation hurts portability. Code that performs well on one runtime may behave differently (or poorly) on another, even though it's using "standard" APIs. The complexity burden on runtime implementers is substantial, and the subtle behavioral differences create friction for developers trying to write cross-runtime code, particularly those maintaining frameworks that must be able to run efficiently across many runtime environments.
Using shadow DOM — MDN Web Docs
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The component can then be loaded in JavaScript as a module. The image decoder interface we defined is accessible to JavaScript, and can be used as if you were importing a JavaScript library to do the task.
Luce said he was "reserving judgement" whether there would be a similar policy for new cars until all responses to the consultation had been reviewed.