Cannot serialize shape type bigDecimal on protocol, shape: smithy.api#BigDecimal.

[TheHarpyEagle]

Hi Team, I am using @restJson1 protocol for my service. One of the operation's input is of BigDecimal type as a member of operation input structure

$version: "2.0"

namespace com.amazon.xyz.v1

use aws.auth#sigv4
use aws.api#service
use aws.protocols#restJson1

@service(
    sdkId: "xyz",
    arnNamespace: "xyz"
)
@sigv4(name: "xyz")
@restJson1
@documentation("xyz interfaces")
service XYZService {
    version: "1.0",
    operations : [
        GetCost
    ]
}

@readonly
operation GetCost {
    input: GetCostRequest
    output: GetCostResponse
    errors: [
    ]
}



@input
structure GetCostRequest {

}

@output
structure GetCostResponse {
  amount: BigDecimal
}

However, when trying to generate TS Code; I am getting below error

     [java] Projection source failed: software.amazon.smithy.codegen.core.CodegenException: Cannot serialize shape type bigDecimal on protocol, shape: smithy.api#BigDecimal.
     [java] software.amazon.smithy.codegen.core.CodegenException: Cannot serialize shape type bigDecimal on protocol, shape: smithy.api#BigDecimal.
     [java]     at software.amazon.smithy.aws.typescript.codegen.JsonMemberSerVisitor.unsupportedShape(JsonMemberSerVisitor.java:140)
     [java]     at software.amazon.smithy.aws.typescript.codegen.JsonMemberSerVisitor.bigDecimalShape(JsonMemberSerVisitor.java:67)
     [java]     at software.amazon.smithy.aws.typescript.codegen.JsonMemberSerVisitor.bigDecimalShape(JsonMemberSerVisitor.java:43)

Can someone help understand why this error is happening ? What are the alternative in-case.

[kuhe]

it isn't supported yet, and may become supported in Q3 this year. It would be announced in #1600.

The existing alternative is to model the field as a string.