[babel-plugin-fbt] in conflict with "react-hot-loader/babel" : TypeError: Property value expected type of string but got null

[retyui]

When I run next command:

node ../node_modules/babel-plugin-fbt/bin/collectFBT.js --pretty  --json-input  < i18n/src-manifest.json

I get an error:

src/features/usersPage/Page/index.js:
	TypeError: Property value expected type of string but got null

/home/i/all-work/synergeto/admin-ui/node_modules/babel-plugin-fbt/bin/collectFBT.js:131
    throw new Error(`Failed in ${errCount} files`);
    ^

Error: Failed in 4 files
    at writeOutput (/home/i/all-work/synergeto/admin-ui/node_modules/babel-plugin-fbt/bin/collectFBT.js:131:11)
    at ReadStream.<anonymous> (/home/i/all-work/synergeto/admin-ui/node_modules/babel-plugin-fbt/bin/collectFBT.js:169:5)
    at ReadStream.emit (events.js:203:15)
    at endReadableNT (_stream_readable.js:1129:12)
    at process._tickCallback (internal/process/next_tick.js:63:19)

A babel config to fix this problem:

const fbtEnumManifest = require('./.i18n/enum-manifest.json');

const presets = ['@exeto/babel-preset-react'];
const plugins = [
  ['babel-plugin-fbt', { fbtEnumManifest }],
  'babel-plugin-fbt-runtime',
];

// To fix problem with Fbt
+if (process.env.NODE_ENV === 'development') {
+  plugins.push('react-hot-loader/babel');
+}

module.exports = {
  presets,
  plugins,
};

[jrwats]

@retyui, I think I'm going to have to know more to understand what's wrong and if this is specific to your setup or of others could hit this. Is this source Github or shared anywhere?