refactor: init cypress-cucumber-preprocessor install.

node_modules/babelify/README.md

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+# babelify [![Build Status](https://travis-ci.org/babel/babelify.svg?branch=master)](https://travis-ci.org/babel/babelify)
+
+[Babel](https://github.com/babel/babel) [browserify](https://github.com/substack/node-browserify) transform.
+
+As of [Babel 6.0.0](http://babeljs.io/blog/2015/10/29/6.0.0/) there are **no plugins included by default**. For babelify to be useful, you must also include some [presets](http://babeljs.io/docs/plugins/#presets) and/or [plugins](http://babeljs.io/docs/plugins/#transform).
+
+## Installation
+
+```sh
+# Babel 7
+$ npm install --save-dev babelify @babel/core
+
+# Babel 6
+$ npm install --save-dev babelify@8 babel-core
+```
+
+## Usage
+
+### CLI
+
+```sh
+$ browserify script.js -o bundle.js -t [ babelify --presets [ @babel/preset-env @babel/preset-react ] --plugins [ @babel/plugin-transform-class-properties ] ]
+```
+
+### Node
+
+```javascript
+var fs = require("fs");
+var browserify = require("browserify");
+browserify("./script.js")
+  .transform("babelify", {presets: ["@babel/preset-env", "@babel/preset-react"]})
+  .bundle()
+  .pipe(fs.createWriteStream("bundle.js"));
+```
+
+**NOTE:** [Presets and plugins](http://babeljs.io/docs/plugins/) need to be installed as separate modules. For the above examples to work, you'd need to also install [`@babel/preset-env`](https://www.npmjs.com/package/@babel/preset-env) and [`@babel/preset-react`](https://www.npmjs.com/package/@babel/preset-react):
+
+```sh
+$ npm install --save-dev @babel/preset-env @babel/preset-react
+```
+
+### Options
+
+Selected options are discussed below. See the [babel](http://babeljs.io/) docs for the complete list of [options](http://babeljs.io/docs/usage/options/).
+
+Options may be passed in via standard [browserify](https://github.com/substack/node-browserify#btransformtr-opts) ways:
+
+```sh
+$ browserify -t [ babelify --presets [ @babel/preset-env @babel/preset-react ] ]
+```
+
+```js
+browserify().transform("babelify", {presets: ["@babel/preset-env", "@babel/preset-react"]});
+```
+
+```js
+var babelify = require("babelify");
+browserify().transform(babelify, {presets: ["@babel/preset-env", "@babel/preset-react"]});
+```
+
+Or, with the `configure` method:
+
+```js
+browserify().transform(babelify.configure({
+  presets: ["@babel/preset-env", "@babel/preset-react"]
+}));
+```
+
+#### Customizing extensions
+
+By default, all files with the extensions `.js`, `.es`, `.es6` and `.jsx` are compiled. You can change this by passing an array of extensions.
+
+**NOTE:** This will override the default ones so if you want to use any of them
+you have to add them back.
+
+```js
+browserify().transform("babelify", {extensions: [".babel"]});
+```
+
+```sh
+$ browserify -t [ babelify --extensions .babel ]
+```
+
+Now you can use:
+
+```js
+import NavBar from "nav-bar.babel";
+var Panels = require("panels.babel");
+```
+
+**NOTE:** By default, Browserify will only lookup `.js` and `.json` files when the extension is ommited (like node's `require`). To lookup additional extensions, use browserify's [`extensions` option](https://github.com/substack/node-browserify#browserifyfiles--opts).
+
+```js
+browserify({
+  extensions: [".babel"]
+}).transform("babelify", {
+  extensions: [".babel"]
+});
+```
+
+```sh
+$ browserify --extensions=.babel -t [ babelify --extensions .babel ]
+```
+
+Now you can omit the extension and compile `.babel` files:
+
+```js
+import NavBar from "nav-bar";
+var Panels = require("panels");
+```
+
+#### Source maps
+
+By default, browserify sets the source map sources paths relative to the basedir (or to `process.cwd()` if not set). To make the sources paths absolute, set the `sourceMapsAbsolute` option on babelify:
+
+```js
+browserify().transform("babelify", {
+  sourceMapsAbsolute: true
+});
+```
+
+```sh
+$ browserify -t [ babelify --sourceMapsAbsolute ]
+```
+
+#### Additional options
+
+```javascript
+browserify().transform(babelify.configure({
+  // Optional ignore regex - if any filenames **do** match this regex then
+  // they aren't compiled
+  ignore: /regex/,
+
+  // Optional only regex - if any filenames **don't** match this regex
+  // then they aren't compiled
+  only: /my_es6_folder/
+}))
+```
+
+```sh
+$ browserify -t [ babelify --ignore regex --only my_es6_folder ]
+```
+
+#### Babel result (metadata and others)
+
+Babelify emits a `babelify` event with Babel's full result object as the first
+argument, and the filename as the second. Browserify doesn't pass-through the
+events emitted by a transform, so it's necessary to get a reference to the
+transform instance before you can attach a listener for the event:
+
+```js
+var b = browserify().transform(babelify);
+
+b.on("transform", function(tr) {
+  if (tr instanceof babelify) {
+    tr.once("babelify", function(result, filename) {
+      result; // => { code, map, ast, metadata }
+    });
+  }
+});
+```
+
+## FAQ
+
+### Why aren't files in `node_modules` being transformed?
+
+This is the default browserify behavior.
+
+A possible solution is to add:
+
+```json
+{
+  "browserify": {
+    "transform": ["babelify"]
+  }
+}
+```
+
+to the root of all your modules `package.json` that you want to be transformed. If you'd like to
+specify options then you can use:
+
+```json
+{
+  "browserify": {
+    "transform": [["babelify", { "presets": ["@babel/preset-env"] }]]
+  }
+}
+```
+
+Another solution (proceed with caution!) is to run babelify as a [global](https://github.com/substack/node-browserify#btransformtr-opts) transform. Use the babel [`ignore` option](http://babeljs.io/docs/usage/options/) to narrow the number of files transformed:
+
+```js
+browserify().transform("babelify", {
+  global: true,
+  ignore: /\/node_modules\/(?!app\/)/
+});
+```
+
+The above example will result in a transform that also includes the `app` module in `node_modules`: the `global` flag transform all files, and the `ignore` regular expression then excludes all those in the `node_modules` directory *except* those that are in `node_modules/app` (since `?!` will match if the given suffix is absent).
+
+### Why am I not getting source maps?
+
+To use source maps, enable them in browserify with the [`debug`](https://github.com/substack/node-browserify#browserifyfiles--opts) option:
+
+```js
+browserify({debug: true}).transform("babelify");
+```
+
+```sh
+$ browserify -d -t [ babelify ]
+```
+
+If you want the source maps to be of the post-transpiled code, then leave `debug` on, but turn off babelify's `sourceMaps`:
+
+```js
+browserify({debug: true}).transform("babelify", {sourceMaps: false});
+```
+
+```sh
+$ browserify -d -t [ babelify --no-sourceMaps ]
+```