Component testing code coverage - parameters not read from package.json

[yann-combarnous]

Hi,

I am currently on CRA and instrumenting my code with:
`
// Component testing web dev server setup for code coverage
if (config.testingType === 'component') {
const webpackConfig = findReactScriptsWebpackConfig(config);
const rules = webpackConfig.module.rules.find((rule) => !!rule.oneOf).oneOf;
const babelRule = rules.find((rule) => /babel-loader/.test(rule.loader));
babelRule.options.plugins.push(require.resolve('babel-plugin-istanbul'));

on('dev-server:start', (options) => {
  return startDevServer({ options, webpackConfig });
});

}
`

But I noticed that component testing is not looking at the "nyc" prop in my package.json that says:
"nyc": { "all": true,

as it is not taking into account all files in code coverage %. Any idea how to get it to read package.json, as it is supposed to be the default for babel-plugin-istanbul?