Make this library Typescript first

Typescript support

You may also use the package typings-for-css-modules-loader instead of css-loader to automatically generate typescript .d.ts files in order to help resolve any css/scss styles

Type safety. Entire codebase is written in TypeScript.

And yes, template tags cannot have TS right now.

I could imagine people putting a more complex expression in an @const than we typically find in svelte expressions today, which might create more demand for those blocks to have TypeScript support, which I don't think they have now.

This library is built in TypeScript, and for TypeScript users it offers an additional benefit: one no longer needs to declare action types. The example above, if we were to write it in TypeScript with useReducer, would require the declaration of an Action type: type Action = | { type: 'reset' } | { type: 'increment' } | { type: 'decrement' }; With useMethods the "actions" are implicitly derived from your methods, so you don't need to maintain this extra type artifact.