Don't suggest private fields in contexts where they are out of scope

🔎 Search Terms

private fields suggestions

🕗 Version & Regression Information

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about private fields

⏯ Playground Link

https://www.typescriptlang.org/play?#code/C4TwDgpgBAogHgQwLZgDYQJIDsCWwoC8UA3gFBQVQBmA9jQFxRYCuSARhAE4A0pAvgG5SpUJFiIU6ADI4A1tCLxkaaAB9xy9NjxDSAY1QIAzkY2ToZSlCPAEwHHqg4jS8wAoAbglTMIjBFggAJSMXj7QzmYqJORWlJwQwMycWFAAxLQ0TqlhvkJWfMJWNnYO1Jw0SG4QEioy8oyudXIQIVHoMXGUOFRQbk3oAHTOAxDVtdItQUGdXXEJSSlQNZoQ9RD5c4VzUAvJqVgQAO7tYyvm60GbFIWxFAkIACY0WKgg6ZmMLOxculZ6LxsnGYemANE4bmI1DoUD4jQmmFwwBmljmwAAFs5BhkYURMtdYfxhACsDZlgjCKdBlQKlVURQAPQMqAAFU471EOCwAHMoAAiKh8qABR7WCDQDF2KAYrgRUwIazMbnciA2HAvaGcD50fhXUhAA

💻 Code

type ExampleInit = {
    foo: number,
};

type ExampleLike = Example | ExampleInit;

class Example {
    static isExample(value: any): value is Example {
        return #foo in value;
    }

    static from(exampleLike: ExampleLike): Example {
        if (Example.isExample(exampleLike)) {
            return exampleLike;
        }
        return new Example(exampleLike);
    }

    readonly #foo: number;

    constructor({ foo }: ExampleInit) {
        this.#foo = foo;
    }
}

const example = Example.from({
    // Try typing "f" and see that there is a suggestion for #foo
});

🙁 Actual behavior

We get suggestions for private fields:

This is particularly annoying as the private fields tend to be suggested first, so tab-completion tends to produce broken code.

🙂 Expected behavior

The private field should not be included as a suggestion when outside the class scope where the field is defined.

Additional information about the issue

No response

Start by reproducing the completion in the linked TypeScript Playground using the provided Example class and object literal. Trace the completion behavior for the private field outside the class scope, then verify that the suggestion is omitted there without changing valid private-field suggestions inside the defining class.