message: build/bundleProcessor: handle errors better
diff: @@ -22,7 +22,22 @@ module.exports = function bundleProcessor ({ bundleStream, headerFile, minHeader
  bundleStream.on('data', chunk => streamCode += chunk);
  bundleStream.on('end', function () {
  - const raw = bundleHeader(getHeaderOpts(headerFile, filenames.raw, streamCode));
  + let raw;
  +
  + try {
  + raw = bundleHeader(getHeaderOpts(headerFile, filenames.raw, streamCode));
  + }
  + catch (e) {
  + for (const name in filenames) {
  + write({
  + filename: filenames[name],
  + code: streamCode,
  + map: { sources: [] },
  + });
  + }
  +
  + return;
  + }
  write(raw);
  