joplin/ReactNativeClient/lib/shim.js

let shim = {};

shim.isNode = () => {
	if (typeof process === 'undefined') return false;
	return process.title == 'node';
};

shim.isReactNative = () => {
	return !shim.isNode();
};

shim.fetch = typeof fetch !== 'undefined' ? fetch : null;
shim.FormData = typeof FormData !== 'undefined' ? FormData : null;
shim.fs = null;
shim.FileApiDriverLocal = null;
shim.readLocalFileBase64 = () => { throw new Error('Not implemented'); }
shim.uploadBlob = () => { throw new Error('Not implemented'); }

export { shim };