es6-lab.config.js

var Babel = require("@babel/core");

var internals = {};
internals.transform = function (content, filename) {
  if (/^node_modules/.test(filename)) {
    return content;
  }

  var transformed = Babel.transform(content, {
    filename: filename,
    sourceMap: "inline",
    sourceFileName: filename,
    auxiliaryCommentBefore: "$lab:coverage:off$",
    auxiliaryCommentAfter: "$lab:coverage:on$",
  });

  return transformed.code;
};

internals.extensions = ["js", "jsx", "es", "es6"];
internals.methods = [];
for (var i = 0, il = internals.extensions.length; i < il; ++i) {
  internals.methods.push({
    ext: internals.extensions[i],
    transform: internals.transform,
  });
}

module.exports = internals.methods;