tsconfig.json

// TypeScript configuration
// shared across packages
{
	"compilerOptions": {
		// Always transpile to ES5
		"target": "es5",
		"module": "commonjs",
		// Strict Type-Checking
		"strict": true,
		// Node.js resolution strategy
		"moduleResolution": "node",
		// Resolve JSON files as modules
		"resolveJsonModule": true,
		// Emit interoperability between CommonJS and ES Modules
		"esModuleInterop": true,
		// Allow default imports from modules with no default export.
		// This does not affect code emit, just type checking.
		"allowSyntheticDefaultImports": true,
		// Enables experimental support for ES7 decorators
		"experimentalDecorators": true,
		// Shared types
		"types": [
			"node",
			"fs-extra"
		],
		"lib": [
			"es2017",
			"es2015",
			"dom",
			"dom.iterable",
			"scripthost"
		]
	},
	"exclude": [
		"node_modules"
	]
}