w3tecch / class-mapper Goto Github PK

Is your feature request related to a problem? Please describe.
I am unable to use the PropertyType decorator for property which may be null or undefined.

Describe the solution you'd like
The solution might be as simple as adding the enabled option behaving exactly the same as it does in the MapFromSource decorator but independently of each other

Additional context
Simple example of the problem:

class Foo {
    @MapFromSource(obj => obj.anything)
    public something!: string;
}

class Bar {
    @PropertyType(Foo)
    @MapFromSource(obj => obj.maybeFoo)
    public foo!: Foo | null;
}

This one works as expected:

mapClasses({
    maybeFoo: {
        anything: 'whatever'
    }
}, Bar);

But this one:

mapClasses({
    maybeFoo: null
}, Bar);

Throws an error, however i would expect the result to be this:

{
    foo: null
}

Describe the bug

I tried to use this library for serialization responsed dto. so I wanted to transform typeorm entity to response dto class.

when target class was nested class, it has an array property. I tried to use PropertyType decorator . but I got an error.

May I know how? plz answer me . thanks

To Reproduce
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4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Additional Information (please complete the following information):

• OS: [macOS Catalina]
• Browser [None]
• Node.js Version [12.16.3]
• Library Version [0.2.3]

Additional context
Add any other context about the problem here.