What this snippet does
Objects passed to 'using' must implement either Symbol.dispose or Symbol.asyncDispose, or TypeScript will throw a compile error.
Expected output
Compile Error: Type 'NoDispose' is not assignable to type 'Disposable'.
Why practise typing this
Typing modern es features code builds muscle memory for the symbols and indentation TypeScript 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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