message: Avoid running test/babylon.js tests in Node 4 and 5.
diff: @@ -3,21 +3,20 @@ var recast = require("../main.js");
  var n = recast.types.namedTypes;
  var b = recast.types.builders;
  var eol = require("os").EOL;
  +var nodeMajorVersion = parseInt(process.versions.node, 10);
  describe("Babel", function () {
  - var babelTransform = require("@babel/core").transform;
  - var babelPresetES2015 = require("@babel/preset-es2015");
  - var parseOptions = {};
  -
  - try {
  - parseOptions.parser = require("../parsers/babylon");
  - } catch (e) {
  - if (require("semver").gte(process.version, "4.0.0")) {
  - throw e;
  - }
  + // Babel no longer supports Node 4 or 5.
  + if (nodeMajorVersion < 6) {
  return;
  }
  + var babelTransform = require("@babel/core").transform;
  + var babelPresetES2015 = require("@babel/preset-es2015");
  + var parseOptions = {
  + parser: require("../parsers/babylon")
  + };
  +
  it("basic printing", function () {
  function check(lines) {
  var code = lines.join(eol);
  