Before: runtime ale_linters/javascript/flow.vim After: call ale#linter#Reset() Execute(flow should return a command to run if a .flowconfig file exists): silent! cd /testplugin/test :e! flow/a/sub/dummy AssertEqual '''flow'' check-contents --respect-pragma --json --from ale %s', ale_linters#javascript#flow#GetCommand(bufnr('%'), []) Execute(flow should should not use --respect-pragma for old versions): silent! cd /testplugin/test :e! flow/a/sub/dummy AssertEqual \ '''flow'' check-contents --json --from ale %s', \ ale_linters#javascript#flow#GetCommand(bufnr('%'), [ \ 'Warning: `flow --version` is deprecated in favor of `flow version`', \ 'Flow, a static type checker for JavaScript, version 0.27.0', \ ]) Execute(flow should not return a command to run if no .flowconfig file exists): silent! cd /testplugin/test :e! flow/b/sub/dummy AssertEqual '', ale_linters#javascript#flow#GetCommand(bufnr('%'), [])