install font face observer

pnpm-lock.yaml

@@ -34,6 +34,9 @@ dependencies:
   date-fns:
     specifier: ^2.30.0
     version: 2.30.0
+  fontfaceobserver:
+    specifier: ^2.3.0
+    version: 2.3.0
   isomorphic-fetch:
     specifier: ^3.0.0
     version: 3.0.0
@@ -99,6 +102,9 @@ devDependencies:
   '@rushstack/eslint-patch':
     specifier: ^1.5.1
     version: 1.5.1
+  '@types/fontfaceobserver':
+    specifier: ^2.1.3
+    version: 2.1.3
   '@types/markdown-it':
     specifier: ^13.0.6
     version: 13.0.6
@@ -2358,6 +2364,10 @@ packages:
   /@types/estree@1.0.1:
     resolution: {integrity: sha512-LG4opVs2ANWZ1TJoKc937iMmNstM/d0ae1vNbnBvBhqCSezgVUOzcLCqbI5elV8Vy6WKwKjaqR+zO9VKirBBCA==}
 
+  /@types/fontfaceobserver@2.1.3:
+    resolution: {integrity: sha512-AewfFg9iUfoUZ4EfKxhBaEuzY2TUS+Hm0vXWMPcJRY7C4wC9XtW20lPVYHTcWVZYq1uthCEa5APl7RAX7jr2Xg==}
+    dev: true
+
   /@types/json-schema@7.0.12:
     resolution: {integrity: sha512-Hr5Jfhc9eYOQNPYO5WLDq/n4jqijdHNlDXjuAQkkt+mWdQR+XJToOHrsD4cPaMXpn6KO7y2+wM8AZEs8VpBLVA==}
     dev: true
@@ -3981,6 +3991,10 @@ packages:
     resolution: {integrity: sha512-5nqDSxl8nn5BSNxyR3n4I6eDmbolI6WT+QqR547RwxQapgjQBmtktdP+HTBb/a/zLsbzERTONyUB5pefh5TtjQ==}
     dev: true
 
+  /fontfaceobserver@2.3.0:
+    resolution: {integrity: sha512-6FPvD/IVyT4ZlNe7Wcn5Fb/4ChigpucKYSvD6a+0iMoLn2inpo711eyIcKjmDtE5XNcgAkSH9uN/nfAeZzHEfg==}
+    dev: false
+
   /for-each@0.3.3:
     resolution: {integrity: sha512-jqYfLp7mo9vIyQf8ykW2v7A+2N4QjeCeI5+Dz9XraiO1ign81wjiH7Fb9vSOWvQfNtmSa4H2RoQTrrXivdUZmw==}
     dependencies: