Function linePoints

linePoints(
    labels: number,
    values: readonly number[],
    maxValue: number,
): { x: number; y: number }[]
Where each point of a line series sits, as fractions of the plot.
```
x = index / (labels - 1)     v1: chartX + index * (chartWidth / (labels - 1))
y = 1 - value / maxValue     v1: chartY + h - (value / maxValue) * h
```
Points span edge to edge, where bars are centred in slots — v1 divides by labels - 1 here and by labels there, so the first and last points sit on the plot's edges rather than inset. A single label has no span to divide, so v1 divides by one and the point sits at the left edge.
Parameters
- labels: number
- values: readonly number[]
- maxValue: number
Returns { x: number; y: number }[]
- x: number
  
  Distance across the plot, as a fraction of its width.
- y: number
  
  Distance down the plot, as a fraction of its height.
  
  Inverted from the value: 0 is the top of the plot and 1 the bottom, so a point can be placed without the caller flipping it. A maximum of zero puts every point on the floor rather than dividing by it.
- Defined in chart.d.ts:255