DX: Improve stack trace legibility

[davidhousedev]

When working with server functionality, I've found that stack traces aren't very helpful. Specifically, the line numbers of the location in the JavaScript file read at runtime do not align with the TypeScript file I work with locally. As a result, if I see an exception: TypeError: Cannot read properties of null (reading 'value'), and I'm reading multiple metafield values, I don't know which one is causing the error.