Add typescript example and improve types

[kormic]

• Improve typings. Use Generics so you can define the result of the promise

• Add a typescript example to demonstrate how you can use it with typescript

[move-zig]

This looks good! I know other libraries like RxJS and axios use this pattern and I've found it to be pretty useful.

I wonder if we can clean up the generic a bit when returnArgumentsArray is true. Rather than the developer having to remember to correctly type the tuple, we could provide a helper type like

type ArgumentsArray<T> = [ data: T[], fields: FieldInfo[], query: Query<T> ];

Then the developer only has to write

connection.query<ArgumentsArray<Employee>>('select * from employees limit 0, 10')

rather than

connection.query<[data: Employee[], fields: FieldInfo[], query: Query<Employee>]>('select * from employees limit 0, 10')

[kormic]

@move-zig yes sure, that makes sense!

Edit: this way there is no need to re-export the type FieldInfo

[CodeFoodPixels]

Thank you both @kormic and @move-zig for your work on this!

[CodeFoodPixels]

Published as 5.2.0