in fusion-cli/build/jest/base-jest-config.js [23:32]
function getReactVersion(meta) {
const react =
(meta.dependencies && meta.dependencies.react) ||
(meta.devDependencies && meta.devDependencies.react) ||
(meta.peerDependencies && meta.peerDependencies.react);
return react
.split('.')
.shift()
.match(/\d+/);
}