tsconfig.json

{
	"include": ["./src/**/*"],
	"exclude": ["node_modules", "dist"],
	"compilerOptions": {
		"outDir": "./dist",
		"rootDir": "./src",

		"typeRoots": ["./node_modules/@types"],

		"target": "ESNext", // TypeScript is not used for building, allow all modern features
		"module": "CommonJS",

		// `tsc` only used to build type declaration files (`.d.ts`)
		// TODO: add support for types
		"declaration": false,
		"declarationMap": false, // Allow jumping to source file instead of 'd.ts' file

		"allowJs": true,

		"moduleResolution": "Node", // Yup, we are using Node
		"forceConsistentCasingInFileNames": true, // Error out if import and file system have a casing mismatch. Recommended by TS.
		"esModuleInterop": true, // Improve importing from CJS modules, recommended by TS: https://www.typescriptlang.org/docs/handbook/release-notes/typescript-2-7.html#support-for-import-d-from-cjs-from-commonjs-modules-with---esmoduleinterop
		"skipLibCheck": true, // Significant perf increase by skipping checking .d.ts files, particularly those in node_modules. Recommended by TS.
		"resolveJsonModule": true, // Allow importing .json files

		"removeComments": true,
		"strict": true, // Of course!
	},
}