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n0mn0m's solution

to Two Fer in the TypeScript Track

Published at Oct 29 2020 · 0 comments
Instructions
Test suite
Solution

Two-fer or 2-fer is short for two for one. One for you and one for me.

Given a name, return a string with the message:

One for X, one for me.

Where X is the given name.

However, if the name is missing, return the string:

One for you, one for me.

Here are some examples:

Name String to return
Alice One for Alice, one for me.
Bob One for Bob, one for me.
One for you, one for me.
Zaphod One for Zaphod, one for me.

Setup

Go through the setup instructions for TypeScript to install the necessary dependencies:

https://exercism.io/tracks/typescript/installation

Requirements

Install assignment dependencies:

$ yarn install

Making the test suite pass

Execute the tests with:

$ yarn test

In the test suites all tests but the first have been skipped.

Once you get a test passing, you can enable the next one by changing xit to it.

Source

https://github.com/exercism/problem-specifications/issues/757

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

two-fer.test.ts

import { twoFer } from './two-fer'

describe('TwoFer', () => {
  it('no name given', () => {
    const expected = 'One for you, one for me.'
    expect(twoFer()).toEqual(expected)
  })

  xit('a name given', () => {
    const expected = 'One for Alice, one for me.'
    expect(twoFer('Alice')).toEqual(expected)
  })

  xit('another name given', () => {
    const expected = 'One for Bob, one for me.'
    expect(twoFer('Bob')).toEqual(expected)
  })
})
/**
 * This stub is provided to make it straightforward to get started.
 */

export function twoFer(name="you"): string {
  // ^                 ^   ^ this is called a return type; it's the type of the
  // ^                 ^     value that is returned from this function
  // ^                 ^
  // ^                 parameters go here
  // ^
  // allows the tests to import this function and call it
    return `One for ${name}, one for me.`
}

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