William Chargin 252400d5e7
flow: fix Statement properties (#886)
Summary:
These were completely wrong; my bad.

[The docs][1] list `source` and `returnsData` but not `database`.
I include the latter only for consistency with `Transaction`, and will
consider removing them both as they are technically undocumented (though
not underscore-named, so it’s not clear-cut).

[1]: https://wchargin.github.io/better-sqlite3/api.html#properties-1

Test Plan:
At a Node console:

```js
> require("better-sqlite3")(":memory:").prepare("BEGIN")
Statement {
  returnsData: false,
  source: 'BEGIN',
  database:
   Database {
     inTransaction: false,
     open: true,
     memory: false,
     readonly: false,
     name: ':memory:' } }
```

wchargin-branch: flow-better-sqlite3-statement-properties
2018-09-21 17:48:28 -07:00
..
2018-09-21 17:48:28 -07:00