Cannot assign `null` for class attributes in models.

[AshenI99]

Problem

Getting an error while assigning null for class attributes in models. But it is working when we replace null with empty string.

{
        spec: NFT_SPEC,
        name: NFT_NAME,
        symbol: NFT_SYMBOL,
        icon: null,
        base_uri: null,
        reference: null,
        ...
}

ERROR TS2322: Type '~lib/string/String | null' is not assignable to type '~lib/string/String'.

[AshenI99]

Testings

class NFTContractMetadata {
    spec: string | null
   ...
}

{
    spec: null
    ...
}

In TypeScript null can be assignable by using null type in type declaration with a union like above. But when using that method with near-sdk package, below error is coming through near-sdk-bingden.

ERROR TS2322: Type '~lib/string/String | null' is not assignable to type '~lib/string/String'.

       encoder.setString(name, value);
                               ~~~~~
 in ~lib/near-sdk-bindgen/index.ts(125,31)

Seems like null cannot be passed to the near-sdk.

[bestatigen]

thanks for looking into this @AshenI99

[bestatigen]

near/near-sdk-as#697