clean assets script

NEWS.md

@@ -2,6 +2,7 @@ Development
 -----------
 
 ### Features
+* Clean assets script
 * Improve error on widgets (CartoDB/deep-insights.js#574)
 * Add pagination support in data imports listing in superadmin (#12938).
 * Profile static view (#12704)
@@ -258,6 +259,13 @@ cd $(git rev-parse --show-toplevel)/lib/sql
 sudo make install
 ```
 
+To launch the clean assets script run the following in the terminal:
+```shell
+./script/clean_assets
+```
+
+It will remove old assets from `public/assets/` (older than version in `package.json`)
+
 #### Dropbox API v2 migration
 
 Dropbox API v2 (#8303, #12300): [Dropbox deprecated API v1](https://blogs.dropbox.com/developers/2016/06/api-v1-deprecated/)

script/clean_assets

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+echo "--- Cleaning assets"
+PACKAGE_VERSION=$(grep -m1 version package.json | awk -F: '{ print $2 }' | sed 's/[", ]//g')
+find public/assets/* -type d ! -name $PACKAGE_VERSION -depth 0 | xargs rm -rf