[Expo] Failed to construct transformer: Error: Cannot find module 'metro-react-native-babel-transformer'

[alexander-at-t]

The following code leads to an error in metro bundler in Expo project:

react-native-svg-transformer/index.js

Lines 9 to 15 in 02bdfc5

	const reactNativeTransformer = (() => {
	try {
	return require("@react-native/metro-babel-transformer");
	} catch (error) {
	return require("metro-react-native-babel-transformer");
	}
	})();

In case of expo project, both dependencies could be absent: @react-native/metro-babel-transformer and metro-react-native-babel-transformer.

A fix would be to make reactNativeTransformer and expoTransformer functions, instead of self-executed functions.

Then when we require 'react-native-svg-transformer/expo', then it will not try to execute code of reactNativeTransformer, and so will not throw exception.