Add `filesize` dependency

package.json

@@ -50,6 +50,7 @@
   },
   "dependencies": {
     "@sindresorhus/is": "^0.8.0",
+    "@types/filesize": "^3.6.0",
     "@types/lodash": "^4.14.106",
     "archiver": "^2.1.1",
     "blob-util": "^1.3.0",
@@ -68,6 +69,7 @@
     "emoji-datasource-apple": "4.0.0",
     "emoji-js": "^3.4.0",
     "emoji-panel": "https://github.com/scottnonnenberg/emoji-panel.git#v0.5.5",
+    "filesize": "^3.6.1",
     "firstline": "^1.2.1",
     "form-data": "^2.3.2",
     "fs-extra": "^5.0.0",

yarn.lock

@@ -48,6 +48,10 @@
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/@types/classnames/-/classnames-2.2.3.tgz#3f0ff6873da793870e20a260cada55982f38a9e5"
 
+"@types/filesize@^3.6.0":
+  version "3.6.0"
+  resolved "https://registry.yarnpkg.com/@types/filesize/-/filesize-3.6.0.tgz#5f1a25c7b4e3d5ee2bc63133d374d096b7008c8d"
+
 "@types/lodash@^4.14.106":
   version "4.14.106"
   resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.106.tgz#6093e9a02aa567ddecfe9afadca89e53e5dce4dd"
@@ -3204,6 +3208,10 @@ filesize@3.5.11:
   version "3.5.11"
   resolved "https://registry.yarnpkg.com/filesize/-/filesize-3.5.11.tgz#1919326749433bb3cf77368bd158caabcc19e9ee"
 
+filesize@^3.6.1:
+  version "3.6.1"
+  resolved "https://registry.yarnpkg.com/filesize/-/filesize-3.6.1.tgz#090bb3ee01b6f801a8a8be99d31710b3422bb317"
+
 fill-range@^2.1.0:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-2.2.3.tgz#50b77dfd7e469bc7492470963699fe7a8485a723"