webpack-plugin-customsrcmapurl-fail.js

function vtexIOSourceMapURLPlugin(options) {}
vtexIOSourceMapURLPlugin.prototype.apply = function(compiler) {
  compiler.plugin('emit', function(compilation, callback) {
    compilation.chunks.forEach(function(chunk) {
      chunk.files.forEach(function(filename) {
        var chunkFileValue = compilation.assets[filename] && compilation.assets[filename]._value;

        if (!chunkFileValue) return;

        compilation.assets[filename]._value = chunkFileValue.replace(
          'sourceMappingURL=',
          'sourceMappingURL=//io.vtex.com.br/banana/'
        );
      });
    });

    callback();
  });
}