proxy schema in JavaScript

What this snippet does

A validation Proxy enforces rules on writes without exposing validation logic in the rest of the code.

Expected output

Alice 30
Invalid value for 'age': -1

Why practise typing this

Typing proxy 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.

More JavaScript practice

• proxy getProxy · advanced
• proxy setProxy · advanced
• proxy loggingProxy · advanced
• let vs constVariables · beginner
• const configVariables · beginner
• const mutationVariables · beginner