chore: Convert to Typescript (#83)

Author: bahmutov

.eslintignore

@@ -1,3 +1,5 @@
+!.*
+**/node_modules
 test/_test-output
 cypress/tests/e2e/compile-error.js
 test/fixtures
@@ -8,4 +10,6 @@ examples/react-app/package.json
 examples/react-app/cypress/integration/dynamic-import-spec.js
 # contains nullish operator
 examples/use-babelrc/cypress/integration/spec.js
-*.ts
+dist
+tsconfig.json
+.vscode/

.gitignore

@@ -5,3 +5,4 @@ _test-output
 cypress/videos
 cypress/screenshots
 examples/react-app/build/
+dist

.mocharc.json

@@ -1,4 +1,7 @@
 {
-  "watch-ignore": ["./test/_test-output", "node_modules"],
+  "watch-ignore": [
+    "./test/_test-output",
+    "node_modules"
+  ],
   "exit": true
 }

README.md

@@ -122,15 +122,15 @@ By necessity, this preprocessor sets the entry point for webpack as the spec fil
 **Example**:
 
 ```javascript
-const webpack = require('@cypress/webpack-preprocessor')
+const webpackPreprocessor = require('@cypress/webpack-preprocessor')
 
 module.exports = (on) => {
   const options = {
     webpackOptions: require('../../webpack.config'),
     additionalEntries: ['./app/some-module.js'],
   }
 
-  on('file:preprocessor', webpack(options))
+  on('file:preprocessor', webpackPreprocessor(options))
 }
 ```
 
@@ -141,13 +141,13 @@ The default options are provided as `webpack.defaultOptions` so they can be more
 If, for example, you want to update the options for the `babel-loader` to add the [stage-3 preset](https://babeljs.io/docs/plugins/preset-stage-3/), you could do the following:
 
 ```javascript
-const webpack = require('@cypress/webpack-preprocessor')
+const webpackPreprocessor = require('@cypress/webpack-preprocessor')
 
 module.exports = (on) => {
   const options = webpack.defaultOptions
   options.webpackOptions.module.rules[0].use[0].options.presets.push('babel-preset-stage-3')
 
-  on('file:preprocessor', webpack(options))
+  on('file:preprocessor', webpackPreprocessor(options))
 }
 ```
 

circle.yml

@@ -11,6 +11,7 @@ workflows:
           name: Install
           executor: cypress/base-12-14-0
           yarn: true
+          build: npm run build
           post-steps:
             - run:
                 name: Show info 📺

deferred.js

@@ -0,0 +1,17 @@
+import * as Promise from 'bluebird'
+
+export function createDeferred<T> () {
+  let resolve: (thenableOrResult?: T | PromiseLike<T> | undefined) => void
+  let reject: any
+  const promise = new Promise<T>(function (_resolve, _reject) {
+    resolve = _resolve
+    reject = _reject
+  })
+
+  return {
+    //@ts-ignore
+    resolve,
+    reject,
+    promise,
+  }
+}

deferred.ts

@@ -6,5 +6,7 @@
     "eslint:recommended",
     "plugin:cypress/recommended"
   ],
-  "plugins": ["cypress"]
+  "plugins": [
+    "cypress"
+  ]
 }

examples/react-app/cypress/.eslintrc.json

@@ -1,3 +1,6 @@
+/// <reference types="cypress" />
+/// <reference types="../../../.." />
+// @ts-check
 const findWebpack = require('find-webpack')
 const webpackPreprocessor = require('../../../..')
 

examples/react-app/cypress/plugins/index.js

@@ -6,5 +6,7 @@
     "eslint:recommended",
     "plugin:cypress/recommended"
   ],
-  "plugins": ["cypress"]
+  "plugins": [
+    "cypress"
+  ]
 }