Setting threshold value for diff

[johnvarney]

I am trying to adjust the threshold value for Niffy but do not see the threshold option described in Nightmare as the Niffy info suggests.

I tried:
niffy = new Niffy(
baseUrl,
testUrl,
{ show: true,
threshold: 0.02}
)
but did not seem to change anything.
Thanks

[johnvarney]

Worked it out. Threshold had to be 0.002 as there was only a few pixels changing on the particular test.