Inference from annotated parameters of context-sensitive functions is order dependent

🔎 Search Terms

inference annotated parameters context sensitive order

🕗 Version & Regression Information

• This is the behavior in every version I tried

⏯ Playground Link

https://www.typescriptlang.org/play?ts=5.4.0-dev.20231118#code/CYUwxgNghgTiAEAzArgOzAFwJYHtXwxAGcMAeAFQBp4BBagIQD4AKHAIwCsAueAbwCh48TAA8e5ANyD4UHs1m1qo8QEp4AXkbwAbjizApQtnOPx6SjGPhUZPGms069B-gF8VPXfqn9CJZgJCyvAA5Ig4OCGU0gryPCQwWKgA5hYiDlq8rtFGJvEYiSlp1FAZfNluKj5+GAHSwWERUdKmzKYJSanCliVlWTm28HHwHUXd6RqZFe5SQA

💻 Code

declare function test<T, A, B>(obj: {
  ctx: T;
  a: (a: A, ctx: T) => void;
  b: (b: B, ctx: T, a: A) => void;
}): void;

test({
  ctx: 'foo',
  a: (a: string, ctx) => {},
  b: (b: string, ctx, a) => {},
});

test({
  ctx: 'foo',
  b: (b: string, ctx, a) => {},
  a: (a: string, ctx) => {},
});

🙁 Actual behavior

The second call doesn't infer properly

🙂 Expected behavior

I'd expect the second call to be inferred as good as the first one

Additional information about the issue

related to https://github.com/microsoft/TypeScript/issues/47599

Reproduce the two calls in the linked TypeScript Playground and compare their inference behavior, then read the related issue #47599 for context. Investigate the type inference and contextual typing paths involved; done means the second object-property order infers as successfully as the first without regressing the existing example.