packages/components/jest.resolver.js

   1 /**
   2  * Jest seems to never resolve the 'import' condition from the package.json `exports`,
   3  * and instead it only looks for e.g. ['node', 'require', 'default', 'browser'].
   4  * Since we rely on babel to transform ESM file, we can force the resolver to also consider
   5  * the 'import' field, if the default resolution method fails.
   6  * However, this means that the CJS conditions always have priority in the module resolution,
   7  * which might cause unexpected issues in some packages (but not in the ones we currently use).
   8  */
   9 module.exports = function (request, options) {
  10     try {
  11         return options.defaultResolver(request, options);
  12     } catch (err) {
  13         if (options.conditions) {
  14             return options.defaultResolver(request, { ...options, conditions: ['import'] });
  15         }
  16     }
  17 };