graphql: Return Long for gas, gasUsed, cumulativeGasUsed, estimateGas, and status

[adamschmideg]

The current GraphQL schema defines Long as a 64-bit unsigned integer. The values of gas, gasUsed, cumulativeGasUsed, estimateGas, and status are now returned as BigInt encoded as a 0x-prefixed string. They should return a number instead.

Reproduce running this query

query pending {
  block(number:1) {
    transactions {
      gas
      gasUsed
      cumulativeGasUsed
      status
    }
    estimateGas(data: {})
  }
}

[karalabe]

Unfortunately JavaScript does not support 64 bit ints, so we must return hex strings.

More details at graphql/graphql-spec#73.

The schema should be changed.

[karalabe]

status should probably be an int? Does that support null?

[adamschmideg]

status: Int should be fine, it supports null (as opposed to status: Int! which makes it non-nullable)