init

src/eslint.js

@@ -0,0 +1,12 @@
+const name = 'Freddy'
+typeof name === 'strng'
+
+if (!'serviceWorker' in navigator) {
+  // you have an old browser :-(
+}
+
+const greeting = 'hello'
+console
+  .log('${greting} world!')
+
+  [(1, 2, 3)].forEach(x => console.log(x))

src/flow.js

@@ -0,0 +1,27 @@
+// @flow
+
+function add(a: number, b: number): number {
+  return a + b
+}
+
+type User = {
+  name: {
+    first: string,
+    middle: string,
+    last: string,
+  },
+}
+
+function getFullName(user: User): string {
+  const {
+    name: {first, middle, last},
+  } = user
+  return [first, middle, last].filter(Boolean).join('')
+}
+
+add(1, 2)
+const one = '1'
+add(one, 2)
+
+getFullName({name: {first: 'Joe', middle: 'Bud', last: 'Matthews'}})
+getFullName({name: {first: 'Joe', middle: false, last: 'Matthews'}})

src/prettier.js

@@ -0,0 +1,7 @@
+const user = {
+  name: {first: 'Joe', middle: 'Bud', last: 'Matthews'},
+  age: 25,
+  birthday: 'October 18th, 1988',
+}
+
+console.log(user)