Cannot find namespace 'SQLite'

Expo SDK
1

I installed expo-sqlite with: expo install expo-sqlite
and then imported it with: import { SQLite } from 'expo-sqlite',

but I’m getting a “Cannot find namespace ‘SQLite’” warning in every instance of “SQLite” in my code.

Am I missing a step or something?

2

Hey @ken122624, what SDK version are you running?

3

I have expo 33.0.7.

4

Can you create a Snack that reproduces this error that I can try and replicate on my end? Also, is this occurring on iOS, Android or both?

5

Hi @ken122624. Can you try the following. If it does not give you any errors maybe you can compare it with your app to see what difference might be causing the problem:

Make sure expo-cli version 3.0.10 is installed.
Then create a new blank project with expo init sqlite-test.
This will set up a project with SDK 34, but you can change it back to SDK 33 as follows:

app.json:

{
  "expo": {
    "name": "sqlite-test",
    "slug": "sqlite-test",
    "privacy": "public",
    "sdkVersion": "33.0.0",
    "platforms": [
      "ios",
      "android"
    ],
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/icon.png",
    "splash": {
      "image": "./assets/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#ffffff"
    },
    "updates": {
      "fallbackToCacheTimeout": 0
    },
    "assetBundlePatterns": [
      "**/*"
    ],
    "ios": {
      "supportsTablet": true
    }
  }
}

package.json:

{
  "main": "node_modules/expo/AppEntry.js",
  "scripts": {
    "start": "expo start",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "eject": "expo eject"
  },
  "dependencies": {
    "expo": "^33.0.7",
    "react": "16.8.3",
    "react-dom": "^16.8.6",
    "react-native": "https://github.com/expo/react-native/archive/sdk-33.0.0.tar.gz"
  },
  "devDependencies": {
    "babel-preset-expo": "^6.0.0"
  },
  "private": true
}

If you run yarn and then expo diagnostics you should get something like this:

$ expo diagnostics

  Expo CLI 3.0.10 environment info:
    System:
      OS: ...
      Shell: 4.3.11 - /bin/bash
    Binaries:
      Node: 12.6.0 - /usr/local/node/bin/node
      Yarn: 1.17.3 - /usr/bin/yarn
      npm: 6.11.1 - /usr/local/node/bin/npm
    npmPackages:
      expo: ^33.0.7 => 33.0.7 
      react: 16.8.3 => 16.8.3 
      react-native: https://github.com/expo/react-native/archive/sdk-33.0.0.tar.gz => 0.59.8 
    npmGlobalPackages:
      expo-cli: 3.0.10

If you now expo install expo-sqlite and change App.js to the following, you should not get any errors:

import React from 'react';
import { StyleSheet, Text, View } from 'react-native';
import { SQLite } from 'expo-sqlite';

const db = SQLite.openDatabase("db.db");

export default function App() {
  return (
    <View style={styles.container}>
      <Text>Open up App.js to start working on your app!</Text>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});

I’ve just tried the above and I did not get any errors. Let us know what happens when you try it.

6

I can give this a shot in a bit. Though I should of noted originally that I was seeing the errors in a Typescript project created with Expo. I tried creating a JS project and it actually seemed to have no issues.

1 Like
7

I found I was having some issues due to an “unknown” type declaration in SQLite.d.ts.

I upgraded Expo to 34.0.0, upgraded expo-sqlite to the compatible version, and then the SQLite.d.ts file no longer contained the “unknown” type declaration – resulting in my issues being resolved.

2 Likes
8

Happy to hear things are resolved on SDK34. Sorry you had to deal with the issue though. Thanks for bringing this up.

9

This topic was automatically closed 15 days after the last reply. New replies are no longer allowed.