scaleLinear returns invalid value for domain = [0, 0]

[zouxuoz]

Looks like scaleLinear returns invalid value for domain = [0, 0]

Use case: when all values on the chart equals 0

Current behaviour:

scaleLinear({ range: [100, 0], domain: [0, 0] })(0); // returns 50

Expected behaviour:

scaleLinear({ range: [100, 0], domain: [0, 0] })(0); // returns 0

[williaster]

Hey @zouxuoz 👋 thanks for checking out visx. This actually isn't a visx issue, and it is intentional behavior from the underlying d3-scale for "collapsed domains" (where start === end).

This is similar to visx issue #473 with a suggested workaround, and ultimately you can see the d3-scale issue/fix here.