Hiding "Disable smooth scroll" option in web (#2638)

* Hiding "smooth-scroll" setting when not electron

- This feature requires the restart of electron and
doesn't work in web builds.

* Removing this comment

- A safeguard was added
- This function won't be called unless IS_ELECTRON is true

src/renderer/components/theme-settings/theme-settings.js

@@ -109,6 +109,9 @@ export default Vue.extend({
         const colorName = colorVal.replace(/([A-Z])/g, ' $1').trim()
         return this.$t(`Settings.Theme Settings.Main Color Theme.${colorName}`)
       })
+    },
+    usingElectron: function () {
+      return process.env.IS_ELECTRON
     }
   },
   mounted: function () {
@@ -139,9 +142,7 @@ export default Vue.extend({
       this.updateDisableSmoothScrolling(
         this.disableSmoothScrollingToggleValue
       ).then(() => {
-        // FIXME: No electron safeguard
         const { ipcRenderer } = require('electron')
-
         ipcRenderer.send('relaunchRequest')
       })
     },

src/renderer/components/theme-settings/theme-settings.vue

@@ -14,6 +14,7 @@
         @change="handleExpandSideBar"
       />
       <ft-toggle-switch
+        v-if="usingElectron"
         :label="$t('Settings.Theme Settings.Disable Smooth Scrolling')"
         :default-value="disableSmoothScrollingToggleValue"
         @change="handleRestartPrompt"