/** * The hard-coded singleton key for webpack-hot-middleware's client instance. * * [Ref](https://github.com/webpack-contrib/webpack-hot-middleware/blob/cb29abb9dde435a1ac8e9b19f82d7d36b1093198/client.js#L152) */ const singletonKey = '__webpack_hot_middleware_reporter__'; /** * Initializes a socket server for HMR for webpack-hot-middleware. * @param {function(*): void} messageHandler A handler to consume Webpack compilation messages. * @returns {void} */ function initWHMEventSource(messageHandler) { const client = window[singletonKey]; client.useCustomOverlay({ showProblems: function showProblems(type, data) { const error = { data: data, type: type, }; messageHandler(error); }, clear: function clear() { messageHandler({ type: 'ok' }); }, }); } module.exports = { init: initWHMEventSource };