Plurals
fbt:plural provides you with a shorthand way for plural variations.
<fbt desc="plural example">
  You have
  <fbt:plural
    count="{{ getLikeCount() }}"
    name="number of likes"
    showCount="ifMany"
    many="likes">
     a like
  </fbt:plural>
  on your
  <fbt:plural
    count="{{ getPhotoCount() }}"
    showCount="no">
     photo
  </fbt:plural>.
</fbt>
OR
fbt(
  'You have ' .
    fbt::plural('a like', getLikeCount(), [
      'name' => 'number of likes',
      'showCount' => 'ifMany',
      'many' => 'likes',
    ]) .
    ' on your ' .
    fbt::plural('photo', getPhotoCount()) . '.',
  'plural example',
);
Both the above examples generate the following during collection.
"phrases": [
  {
    "hashToText": {
      "90d6ec6e0a0483edd5e9754592a4ac61": "You have {number of likes} likes on your photos.",
      "158a5d707da85b56353cdfc05c92f4e9": "You have {number of likes} likes on your photo.",
      "421273e69049f26d76c70fb33c6a9aea": "You have a like on your photos.",
      "279c992f92809657b1240d1c955615a3": "You have a like on your photo."
    },
    "type": "table",
    "desc": "plural example",
    ...
  }
]
Required arguments:
- singular phrase 
string: HTML child in<fbt:plural>and argument 1 infbt::plural - count 
number:countin<fbt:plural>and argument 2 infbt::plural 
Optional arguments:
many
string: Represents the plural form of the string in English. Default is$singular . 's'showCount
"yes"|"no"|"ifMany": Whether to show the{number}in the string. Note that the singular phrase never has a token, but inlines to1. This is to account for languages like Hebrew for which showing the actual number isn't appropriate- "no": (DEFAULT) Don't show the count
 - "ifMany": Show the count only in plural case
 - "yes": Show the count in all cases
 
name
string: Name of the token where count shows up. (Default:"number")value
mixed: For overriding the displayednumber