Reflect API in JavaScript

What this snippet does

Reflect provides functional equivalents to operators like in, delete, and property access — used with Proxy to forward operations cleanly.

Expected output

true
[ 'a', 'b' ]
{ a: 1, b: 2, c: 3 }
{ b: 2, c: 3 }
{ value: 2, writable: true, enumerable: true, configurable: true }

Why practise typing this

Typing reflect code builds muscle memory for the symbols and indentation JavaScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.

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• var scope leakVariables · intermediate
• typeof operatorTypes · beginner