Error: While trying to resolve module idb none of these files exist


If expo or react-native-cli is not able to find a file extension it will throw the error while trying to resolve module none of these files exist. To resolve this we need to let Expo and react-native-cli know about such extensions.

Solution with Code Example

If you are using Expo, then open or create metro.config.js and update according to this –

const { getDefaultConfig } = require("@expo/metro-config");

const defaultConfig = getDefaultConfig(__dirname);


module.exports = defaultConfig;
Adding extensions like cjs to metro.config.js file of Expo

You can add more extensions there.

For react-native-cli

const { getDefaultConfig } = require("metro-config");
const { resolver: defaultResolver } = getDefaultConfig.getDefaultValues();
exports.resolver = {
  sourceExts: [