tsconfig.json

{
	"compilerOptions": {
		"outDir": "./build",
		"rootDir": ".",

		"target": "ES2019",
		"module": "commonjs",
		"declaration": true,
		"declarationMap": true,
		"sourceMap": true,
		"removeComments": true,
		"importHelpers": true,
		"isolatedModules": true,

		"strict": true,
		"noImplicitAny": true,
		"strictNullChecks": true,
		"strictFunctionTypes": true,
		"strictBindCallApply": true,
		"strictPropertyInitialization": true,
		"noImplicitThis": true,
		"alwaysStrict": true,

		"noUnusedLocals": true,
		"noUnusedParameters": true,
		"noImplicitReturns": true,
		"noFallthroughCasesInSwitch": true,

		"allowSyntheticDefaultImports": true,
		"esModuleInterop": true,

		"skipLibCheck": true,
		"forceConsistentCasingInFileNames": true,

		"resolveJsonModule": true,
		"allowJs": true,
		"checkJs": false,
		"esModuleInterop": true
	}
}