feat: add type declaration file (#279)

* Add type declaration file Hand roll a type declaration file for `flat.js` that accurately reflects the exported plugin. This resolves type errors when attempting to use `globals` and `recommended` configs in type-checked eslint configs and also aids in autocomplete when typing (as in keyboard button press, not "does it satisfy expected type") properties of the plugin. * (Revisions) Add type declaration file Update code style from review Co-authored-by: Mike McCready <66998419+MikeMcC399@users.noreply.github.com> --------- Co-authored-by: Mike McCready <66998419+MikeMcC399@users.noreply.github.com>

Author: mdmower-csnw

lib/flat.d.ts

@@ -0,0 +1,12 @@
+import type { ESLint, Linter } from 'eslint'
+
+declare const plugin: {
+ meta: { name: string, version: string }
+ configs: {
+ globals: Linter.Config<Linter.RulesRecord>
+ recommended: Linter.Config<Linter.RulesRecord>
+ }
+ rules: NonNullable<ESLint.Plugin['rules']>
+}
+
+export = plugin