Typescript Doesn't Respect Lib

tsconfig.json:

{
    "compilerOptions": {
      "target": "ES5",
      "module": "CommonJS",
      "lib": ["ES5"],
      "strict": true,
      "baseUrl": "./src",
      "outDir": "./dist"
    },
    "include": ["./src"],
    "exclude": ["node_modules"]
  }

src/index.ts:

  
console.log('Hello world');

Promise.all([]);

console.log([""].includes(""));

Promise.resolve().finally();

export function foo(): Promise<number> {
    return Promise.resolve(3.14);
  }

[""].find(() => true);

When I run tsc I would expect to get some type error about Promise, Promise.finally, Array.find, or Array.includes because I haven't specified those as being part of the lib. However, it actually compiles just fine. Why?