update typescript, pass CI (#63)

Author: bahmutov

.circleci/config.yml

@@ -8,6 +8,8 @@ workflows:
           # there are no jobs to follow this one
           # so no need to save the workspace files (saves time)
           no-workspace: true
+          build: npm run lint
           post-steps:
-            # run Jest tests
-            - run: npm test
+            - run:
+                name: Jest tests
+                command: npm test

README.md

@@ -3,15 +3,15 @@
 
 If you are using Jest and Cypress types in the same project, they might conflict because both test runners use globals like `expect`. This project shows how to isolate Cypress TypeScript definitions from Jest TS definitions in the same project.
 
-See the root level [tsconfig.json](tsconfig.json) and [jest.config.js](jest.config.js). The Cypress types are isolated from the root in the file [cypress/tsconfig.json](cypress/tsconfig.json)
+See the root level [tsconfig.json](tsconfig.json) and [jest.config.js](jest.config.js). The Cypress types are isolated from the root in the file [cypress/tsconfig.json](cypress/tsconfig.json). The root tsconfig explicitly only includes `libs` with Jest globals (without Cypress)
 
 ## Additional information
 
 See the excellent advice on setting TypeScript for Jest and Cypress in [TypeScript Deep Dive](https://basarat.gitbooks.io/typescript/content/) e-book by [Basarat Syed](https://twitter.com/basarat)
 
 - [Using Jest with TypeScript](https://basarat.gitbooks.io/typescript/docs/testing/jest.html)
 - [Cypress E2E with TypeScript](https://basarat.gitbooks.io/typescript/docs/testing/cypress.html)
-- Cypress TypeScript transpilation was setup using [add-typescript-to-cypress](https://github.com/bahmutov/add-typescript-to-cypress) module
+- Cypress TypeScript transpilation is using [built-in TS support](https://on.cypress.io/typescript)
 
 ## Questions or problems
 

cypress.json

@@ -1 +1,5 @@
-{}
+{
+  "pluginsFile": false,
+  "supportFile": false,
+  "fixturesFolder": false
+}

cypress/fixtures/example.json

@@ -1,3 +1,12 @@
-it('works', () => {
-  cy.wrap('foo').should('equal', 'foo')
+// import function from the application source
+import { sum } from '../../src/foo'
+
+describe('TypeScript spec', () => {
+  it('works', () => {
+    cy.wrap('foo').should('equal', 'foo')
+  })
+
+  it('calls TS source file', () => {
+    expect(sum(1, 2, 3, 4)).to.equal(10)
+  })
 })

cypress/integration/spec.ts

@@ -1,5 +1,8 @@
 {
   "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "noEmit": false
+  },
   "include": [
     "../node_modules/cypress",
     "./*/*.ts"