Be consistent with the usage of tabs as indents in all JSON files in the
project. This makes it easier to configure editors to emit the right
indents when manually editing these files.
Remove extra whitespace, use more consistent spacing, add missing
semicolons, using dangling commas, break up long lines, consistent
multiline operator placement, add missing JSDoc strings and so on.
* .js to .ts
* Allow access to _items entries; getItemCount return number
* add permission field to PluginPage interface
* port plugins to typescript
* update Request classes
* fix IpcFlowType
Danielv123