Error when there is less than two non-null values

[jasmine-q]

When the data array contains a single non-null value I get this error: Uncaught TypeError: Failed to execute 'createLinearGradient' on 'CanvasRenderingContext2D': The provided double value is non-finite.

This also occurs if the data array is all null values.

Please see code example here: https://codesandbox.io/s/working-trendline-forked-dm6z2x?file=/src/index.js

Thanks

[Makanz]

Please try the latest version 2.1.0