defaultReactionEmoji top-level constant
Emoji shown for each of Stream's default reaction types.
Unknown types fall through to the raw type string in the UI, so custom reactions configured on a Stream application still render something rather than disappearing.
Implementation
const Map<String, String> defaultReactionEmoji = {
'like': '\u{1F44D}',
'love': '\u{2764}\u{FE0F}',
'haha': '\u{1F602}',
'wow': '\u{1F62E}',
'sad': '\u{1F622}',
'angry': '\u{1F621}',
};