@manapotion/util@0.1.0

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export const lerp = (a: number, b: number, t: number): number => a + (b - a) * t
export const clamp = (value: number, limit: number): number =>
  Math.max(Math.min(value, limit), -limit)
export const pi = Math.PI

export const throttle = (
  callback: (...args: any[]) => void,
  delay = 100
): ((...args: any[]) => void) => {
  if (delay <= 0) return callback

  let lastCall = 0

  return (...args: any[]) => {
    const now = performance.now()
    if (now - lastCall < delay) return
    lastCall = now
    callback(...args)
  }
}

export const debounce = (
  callback: (...args: any[]) => void,
  delay = 100
): ((...args: any[]) => void) => {
  if (delay <= 0) return callback

  let timeout: ReturnType<typeof setTimeout> | null = null

  return (...args: any[]) => {
    if (timeout !== null) {
      clearTimeout(timeout)
    }
    timeout = setTimeout(() => callback(...args), delay)
  }
}

export const throttleDebounce = (
  callback: (...args: any[]) => void,
  delay = 100
): ((...args: any[]) => void) => {
  if (delay <= 0) return callback

  let debounceTimeout: ReturnType<typeof setTimeout> | null = null
  let lastCall = 0

  return (...args: any[]) => {
    const now = performance.now()
    const throttleTimePassed = now - lastCall >= delay
    const callCallback = () => {
      if (debounceTimeout !== null) {
        clearTimeout(debounceTimeout)
        debounceTimeout = null
      }
      callback(...args)
      lastCall = performance.now()
    }

    if (debounceTimeout !== null) {
      clearTimeout(debounceTimeout)
    }

    if (throttleTimePassed) {
      callCallback()
    } else {
      debounceTimeout = setTimeout(callCallback, delay - (now - lastCall))
    }
  }
}