Interpolate takes a list of points and finds the best guess of where data would lie given the mean of the Y value using a 'best guess' method.
Interpolate works by taking your points, parsing them from the right, and finding the first place where the average Y fits between two points. It is really only useful for very specific circumstances although Pull Requests are welcome if you would like to see this functionality extended.
npm install @mishguru/interpolate
The best way to figure out how to use this library is to look at src/index.spec.js file.
import interpolate from '@mishguru/interpolate'
const points = [{ x: 1, y: 2 }, { x: 3, y: 4 }]
const result = interpolate(points)
result.x === 2 //true
result.y === 3