Possible to define a static type method without defining a type

[dadooda]

Describe the bug

It's possible to define a static type method, as described in Static type methods, without defining the struct or interface.

Reproduction Steps

This works:

fn main() {
  Mystery.hey()
}

// No definition of `Mystery` here.

fn Mystery.hey() {
  println('hey, ${@METHOD}')
}

Expected Behavior

I'd expect an error, or a warning at least. Most probably, the developer has mistyped the type name or has left out the implementation somehow.

Current Behavior

The code compiles and gets executed.

Possible Solution

No response

Additional Information/Context

No response

V version

0.4.7 7baff15

Environment details (OS name and version, etc.)

Ubuntu 18 under WSL.

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[felipensp]

Bug or feature? :)

[Delta456]

Bug or feature? :)

It is bug