Any best practices on when to choose which way to declare errors?

class RequestError {
  readonly _tag = "RequestError"
  constructor(readonly error: unknown) {}
}

const RequestError_ = Schema.struct({ _tag: Schema.literal("RequestError") })
export interface RequestError extends Schema.To<typeof RequestError_> {}
export const RequestError: Schema.Schema<RequestError> = Schema.to(RequestError_)

    "Err": {
        "prefix": "ee",
        "body": [
            "const ${1:errorName}_ = Schema.struct({ _tag: Schema.literal('${1:errorName}') })",
            "export interface ${1:errorName} extends Schema.To<typeof ${1:errorName}_> {}",
            "export const ${1:errorName}: Schema.Schema<${1:errorName}> = Schema.to(${1:errorName}_)$0"
        ],
        "description": "Generic error template"
    }