Comments (4)
This is working as intended. There's even a section in the FAQ about this, and the behavior is required for some types (e.g. Arrays). Note that strictFunctionTypes
applies to functions, not methods.
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But as provided in the example above there is obviously an error in the code which can be caught at compile time.
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Yes, that's true. But it's still working as intended. TypeScripts type system is not fully sound (and it's not intended to).
Your intended change would break a whole lot of other stuff. See also #57783 for more information.
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TypeScripts type system is not fully sound (and it's not intended to)
That's sad 😕 Another broken dream in software development 🥲
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Related Issues (20)
- `tsc` compile `proposal-explicit-resource-management` different from `babel` and `swc` HOT 1
- After enabling noUncheckedIndexedAccess, using ++ on a default undefined does not trigger an error message. HOT 3
- C++-style `const` modifier on class members HOT 2
- Package Import is not working from neither way "CommonJS" or "Module" HOT 4
- Type guard for child not transitive parent object HOT 3
- Error when compiled JavaScript initializes static properties in a class with a hard private method (`#`) that references a static property
- The ?: inference failed; no selection was made between ifTrue and ifFalse. HOT 1
- Add Support for Flow's new component syntax HOT 6
- Documentation: "Creating and Printing a TypeScript AST" example does not work after v4.9.5
- `satisfies` does not work on a variable called `type`
- API: Can't seem to extract JsDoc tags from declaration HOT 2
- Add option to detect and strip internal exports
- false error on generic type alias parameters HOT 5
- Unable to declare an interface that extends `Record<string, nonAnyType>` with additional support functions. HOT 7
- Add support for generic types on a index accessor HOT 2
- `getTextOfJSDocComment` is stripping `#` from JSDoc comment HOT 1
- Enable `allowJs` with `isolatedDeclarations` HOT 1
- JSDoc comment string with the keyword "@private" before import statement in JS file result in cryptic error TS1191 during compilation HOT 2
- `NoInfer` isn't erased and breaks type narrowing HOT 3
- function with overloading incorrectly defines generic variables HOT 3
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