tsconfig.json

{
    "compilerOptions": {
        "target": "ES2018",
        "module": "commonjs",
        "lib": ["es5", "es6", "esnext"],
        "declaration": true,
        "declarationMap": true,
        "sourceMap": true,
        "outDir": "dist",
        "removeComments": false,

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

        "noUnusedLocals": true,
        "noImplicitReturns": true,

        "esModuleInterop": true,
        "forceConsistentCasingInFileNames": true,
        "resolveJsonModule": true
    },
    "include": ["src/**/*"],
    "exclude": ["src/rewriter/import_directive_header.ts", "src/spec-lang/expr_parser_header.ts"]
}