Related issue: #2479

Associating the value with the type is reasonable, but the current solution break the data structure and bring inconvenience.

I expect table.insert({time_ts: BigQuery.timestamp('2012-12-20)}) should work with schema "time_ts: TIMESTAMP" but in fact I got "This field is not a record." because what it actually send is {"time_ts":{"value":"2012-12-20"}} instead of {"time_ts":"2012-12-20"}.

The workaround I currently use is

bigquery.timestamp.prototype.toJSON = function(){return this.value;};
table.insert(JSON.parse(JSON.stringify({time_ts: BigQuery.timestamp('2012-12-20')})));

Environment details

• OS: linux
• Node.js version: 8.8.x
• npm version: 5.5.1
• google-cloud-node version: "google-cloud/[email protected]",