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That behaviour is only enabled if `--strictNullChecks` is set to true. Otherwise, by default all types include null/undefined just like in TypeScript 1.x. So it

That behaviour is only enabled if `--strictNullChecks` is set to true. Otherwise, by default all types include null/undefined just like in TypeScript 1.x. So it's entirely opt-in.

ng12 10y ago
But it's all or nothing right? If I write a new component in a pre-2.0 codebase and want strict null checks, I can't get them.
- k__ 10y ago
  I saw some comments in TypeScript code-bases, that excluded parts of the code.