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Question

What does the code snippet to the right output by console.log?

Snippet

const obj = {
  a: 1,
  b: this.a + 1,
  c: () => this.a + 1,
  d() {
    return this.a + 1
  },
  e() {
    return (() => this.a + 1)()
  }
}
console.log(obj.b)
console.log(obj.c())
console.log(obj.d())
console.log(obj.e())

Source

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