feat: Add return typing strategies and implement sqrt with them (#26)

Resolves #25

Reviewed-on: #26
Co-authored-by: Glen Whitney <glen@studioinfinity.org>
Co-committed-by: Glen Whitney <glen@studioinfinity.org>

etc/eslint.config.mjs

@@ -0,0 +1,14 @@
+import {defineConfig} from 'eslint/config'
+import js from '@eslint/js'
+import globals from 'globals'
+
+export default defineConfig([{
+   files: ['**/*.js'],
+   plugins: {js},
+   languageOptions: {globals: {...globals.mocha, ...globals.node}},
+   extends: ['js/recommended'],
+   rules: {
+      'no-unused-vars': ['error', {argsIgnorePattern: '^_'}],
+      'no-empty': ['error', {allowEmptyCatch: true}],
+   }
+}])