[playground] Show transpiled output for JavaScript inputs

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Apologies if this is the wrong repository, I could not find one for the playground.

When setting the input language to "JavaScript", the playground does not show the transpiled code on the right. Instead, it shows the input code as-is.

You can test it by setting the target to ES2015 and writing 1 ** 2 in the input file: if the language is set to TypeScript you'll see Math.pow(1, 2) on the right (playground), while if the language is set to JavaScript you'll see 1 ** 2 (playground).

Is there a way to see the transpiled code?

Inizia dalla gestione dell'input JavaScript del TypeScript playground e confrontala con il percorso TypeScript usando gli esempi ES2015 collegati. Il lavoro è completato quando inserire 1 ** 2 con JavaScript selezionato mostra l'output transpilato Math.pow(1, 2), come nel caso TypeScript.