tsconfig.json

{
	"extends": "./.svelte-kit/tsconfig.json",
	"compilerOptions": {
		"types": ["vitest/importMeta", "vite-plugin-pwa/info"],
		"allowJs": true,
		"checkJs": true,
		"esModuleInterop": true,
		"forceConsistentCasingInFileNames": true,
		"resolveJsonModule": true,
		"skipLibCheck": true,
		"sourceMap": true,
		"strict": true,

		// strictest: https://github.com/tsconfig/bases/blob/main/bases/strictest.json
		// @tsconfig/strictestで追加されるcompilerOptionsを確認する https://blog.y-temp4.com/entry/tsconfig-strictest
		"allowUnusedLabels": false,
		"allowUnreachableCode": false,
		"exactOptionalPropertyTypes": true,
		"noFallthroughCasesInSwitch": true,
		"noImplicitOverride": true,
		"noImplicitReturns": true,
		"noPropertyAccessFromIndexSignature": true,
		"noUncheckedIndexedAccess": true,
		"noUnusedLocals": true,
		"noUnusedParameters": true,

		"isolatedModules": true
	}
	// Path aliases are handled by https://kit.svelte.dev/docs/configuration#alias
	//
	// If you want to overwrite includes/excludes, make sure to copy over the relevant includes/excludes
	// from the referenced tsconfig.json - TypeScript does not merge them in
}