Deferred function with explicit function

[hasezoey]

Versions

• System: linux / macos / windows
• NodeJS: 0.0.0
• Typescript: 0.0.0

• Compiler / Transpiler: tsc / ts-node / ts-jest
• Typegoose(NPM): 11.4.0
• Typegoose(GIT): commithash
• mongoose: 0.0.0
• mongodb: 0.0.0
• nestjs / nestjs-typegoose: 0.0.0 / 0.0.0
• grahpql / type-graphql: 0.0.0 / 0.0.0

What is the Problem?

Typegoose currently does not properly handle explicit functions function() { } instead of () => {}

Code Example

class Testy {
  @prop({
    type: function () {
      return String;
    },
  })
  public test?: any;
}

Do you know why it happens?

because utils.ts:isConstructor tests for !isNullOrUndefined(obj.prototype?.constructor?.name), which exists in function() { } but not in () => {}

[hasezoey]

i dont think this is properly fixable because there is no universal way to differentiate between native functions (and mocked native functions) and other types like mongoose's Schema.Types.* and Types.* which are callable without new (and dont have class in their toString representation)

because of those same reasons i also dont think there is a proper way to add a error for this