Possibility to get y position of a point/value at an index?

[himynameisubik]

With a points array as usual, (how) is it possible to get the y position of a point (for example points[1]) on the linegraph?
I'm trying to draw a line on max and min similar to the Top and BottomAxisLabels examples, but they are (obviously?) just on the top and bottom of the graph "frame".

• And something additional; there seems to be some padding visible however as far as I understood, there should be no padding if Top/BottomAxisLabel is not set?

const points = [
    {
       value: 100,
       date: new Date('2020-01-01')
    },
    {
       value: 200,
       date: new Date('2020-01-01')
    },
    {
       value: 300,
       date: new Date('2020-01-01')
    },
    ...
 ]