message: test: remove deprecated Buffer usage in sourcemap test
  PR Close
diff: @@ -43,7 +43,7 @@ describe('sourcemaps', function() {
  const marker = '//# sourceMappingURL=data:application/json;base64,';
  const index = content.indexOf(marker);
  const sourceMapData =
  - new Buffer(content.substring(index + marker.length), 'base64').toString('utf8');
  + Buffer.from(content.substring(index + marker.length), 'base64').toString('utf8');
  const decoder = new sourceMap.SourceMapConsumer(JSON.parse(sourceMapData));
  