gistfile1.txt

const message: string = 'goodbye' 
const count: number = Math.random()
const accurate: boolean = count > 0.5
const teacher: 'David Y. Stephenson' = 'David Y. Stephenson'
console.log(teacher.length)

const a = 1 as number
const b: any = 2
const c = a + b

// any, unknown, never
const x: any = [1, '2', true] // BAD
console.log(x.toExponential())

const y: unknown = 1 // GOOD
console.log(y as number + a)

function crash () {
  throw new Error('The program needs to stop!')
}