diff --git a/src/assets/javascripts/api.js b/src/assets/javascripts/api.ts
similarity index 100%
rename from src/assets/javascripts/api.js
rename to src/assets/javascripts/api.ts
diff --git a/src/assets/javascripts/app.js b/src/assets/javascripts/app.ts
similarity index 100%
rename from src/assets/javascripts/app.js
rename to src/assets/javascripts/app.ts
diff --git a/src/assets/javascripts/i18n.js b/src/assets/javascripts/i18n.ts
similarity index 100%
rename from src/assets/javascripts/i18n.js
rename to src/assets/javascripts/i18n.ts
diff --git a/src/assets/javascripts/key.js b/src/assets/javascripts/key.ts
similarity index 100%
rename from src/assets/javascripts/key.js
rename to src/assets/javascripts/key.ts