eslint: Allow functions to be used before they're defined
eslint: Allow functions to be used before they're defined

See commit message of https://github.com/nextstrain/nextstrain.org/commit/fc4aee33db580dbe0a76529f19137e24b8ce31c4 for rationale
nextstrain/auspice,nextstrain/auspice,nextstrain/auspice