These

Basic

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Learn about basic in fp-ts these

Code Editor

01-basic.exercise.ts

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Test Results

Requirements

describe('These basic', () => {
  it('creates left', () => {
    const result = createLeft('error')
    expect(Th.isLeft(result)).toBe(true)
  })

  it('creates right', () => {
    const result = createRight(42)
    expect(Th.isRight(result)).toBe(true)
  })

  it('creates both', () => {
    const result = createBoth('warning', 42)
    expect(Th.isBoth(result)).toBe(true)
  })
})
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Pro Tips

💡 Stuck? Here's what to try:

  • • Read the comments in the code carefully
  • • Run tests frequently to get feedback
  • • Check the fp-ts documentation
  • • Use the solution if you need help

🚀 Learning Approach:

  • • Focus on understanding, not just solving
  • • Experiment with different approaches
  • • Think about real-world applications
  • • Build on previous exercises