Array.fill requires anywhere between 1 to 3 arguments, but received none

While transitioning my react app to typescript, I've encountered an issue with the following code blocks:

const weekNumber = [
    ...Array(CURRENT_WEEK_NUMBER)
      .fill()
      .map((_, i) => i + 1)
  ];
  const weekLabels = [
    ...Array(17)
      .fill()
      .map((_, i) => i + 1),
    'Playoffs: Wild Card',
    'Playoffs: Divisional Round',
    'Playoffs: Conference Championship',
    'Playoffs: Super Bowl'
  ];

The error message states "Expected 1-3 arguments, but got 0. An Argument for value was not supplied"

I comprehend the issue being raised here, but how can I go about refactoring this code or instructing the compiler to overlook it?

Answer №1

Array.fill allows you to specify a value to populate your Array with. If no value is provided, the default will be undefined. To ensure consistency and functionality, it is recommended to explicitly pass undefined like so:

Array(17)
    .fill(undefined)
    .map((_, i) => i + 1)

Alternatively, you can achieve the same result using Array.from by implementing:

Array.from({ length: 17 }, (_, i) => i + 1)

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