在create-react-native-app上的Knex.js

Question

I am trying to use Knex.js ( http://knexjs.org/ ) to manage the SQLite database that comes with Expo ( https://docs.expo.io/versions/latest/sdk/sqlite.html .) When I import knex, it crashes because of some missing node.js packages like "events", "streams", "assert", etc.

So clearly it seems to think it is in a node.js environment which isn't what create-react-native-app provides by default.

I only need it to generate SQL query strings for a better development interface (compared to string manipulation and concatenation).

Has anyone got knex.js to work on create-react-native-app?

Answer 1

you won't be able to use it at all, so its not a matter of 'has anyone' done it yet. You can't get a full node API environment in a ReactNative app.

Answer 2

You could pack query builder parts of knex ( .toNative() comes in knex 0.14) to your react app and then create queries like:

 knex('MyTable').where('id', 1).toSQL().toNative()

 // Will output 
 // {
 //    sql: 'select * from `MyTable` where `id` = ?',
 //    bindings: [1]
 // }

Knex documentation page is also using that way to render built queries in http://knexjs.org/

Probably you need to use webpack or something like that to build standalone version of knex.