Adding "Firefox ESR" to query results in 0%

[Matt Donkin]

Steps to repro:

1. try query like last 2 versions and > 0.5% and not dead and see coverage as expected (~76%)
2. append "and Firefox ESR" and see coverage drop to 0%

[Lagicrus]

Can confirm this broke my query

[Ritesh Kumar]

What is the expected output here?

If I run npx browserslist "last 2 versions and > 0.5% and not dead and Firefox ESR", I do not get any browser. Am I missing something?

[Sam Bull]

Looks expected to me. This works fine: last 100 versions and > 0% and not dead and Firefox ESR
First issue is that Firefox 91 is at 0.1%, which is less than 0.5%. Second issue is that Firefox 91 is not in the last 2 versions of Firefox.

Maybe Firefox ESR should be considered separate from Firefox, so that last 2 versions will still pick up the current ESR releases, but that'd be an issue for https://github.com/browserslist/browserslist

[Marek ‘saji’ Augustynowicz]

What is the expected output here?

If I run npx browserslist "last 2 versions and > 0.5% and not dead and Firefox ESR", I do not get any browser. Am I missing something?

You probably want to use last 2 versions and > 0.5% and not dead, Firefox ESR as in:

• find browsers that match
  • being two last versions
  • have market share of >0.5%
  • are not dead
• also, add Firefox ESR

[Miguel Calderón]

Working as expected, closing.