Extend tsconfig.json from @tsconfig/vite-react and add the package to dependencies. Adjust TypeScript compiler options for improved compatibility with Vite and React, including type inclusions and path aliases. Simplify ESLint config to use recommended settings and remove TypeScript-specific parser options.
Refines the ESLint TypeScript parser configuration by specifying allowed default projects for certain files and setting the default project to './tsconfig.json'. This improves linting accuracy for the listed files.
# Description of Changes
There's no current linter running over our TypeScript code, which means
we've got a bunch of dead code and other code smells around with nothing
notifying us. This PR adds ESLint with the typescript-eslint plugin and
enables the recommended settings as a starting point for us.
I've disabled all of the failing rules for the scope of this PR, just to
get linting running without causing a massive diff. I'll follow up with
future PRs that enable the failing rules one by one.
Also updates our version of TypeScript, which introduces a new type
error in the code (which I've had to fix)
