tsconfig.json

{
	"extends": "./.svelte-kit/tsconfig.json",
	"compilerOptions": {
		"moduleResolution": "bundler",
		"module": "esnext",
		"lib": [
			"esnext",
			"DOM"
		],
		"target": "esnext",
		"useDefineForClassFields": true,
		/**
			svelte-preprocess cannot figure out whether you have a value or a type, so tell TypeScript
			to enforce using \`import type\` instead of \`import\` for Types.
		*/
		/**
			TypeScript doesn't know about import usages in the template because it only sees the
			script of a Svelte file. Therefore preserve all value imports. Requires TS 4.5 or higher.
		*/
		"isolatedModules": true,
		"resolveJsonModule": true,
		/**
			To have warnings/errors of the Svelte compiler at the correct position,
			enable source maps by default.
		*/
		"sourceMap": true,
		"esModuleInterop": true,
		"skipLibCheck": true,
		"forceConsistentCasingInFileNames": true,
		"allowJs": true,
		"checkJs": true,
		"outDir": ".build",
		"typeRoots": ["./node_modules/@types", "./src/types"]
	}
}