angular - ionic .htaccess

.htaccess

<IfModule mod_rewrite.c >
  RewriteEngine on
  RewriteOptions inherit

  # let's encrypt ssl
  RewriteCond %{REQUEST_URI} !^/\.well-known/acme-challenge/.+$
  RewriteCond %{REQUEST_URI} !^/\.well-known/pki-validation/[A-F0-9]{32}\.txt(?:\ Comodo\ DCV)?$
  RewriteRule ^.well-known/acme-challenge - [L]

  # redirect to no-www
  RewriteBase /
  RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC]
  RewriteRule ^(.*)$ https://%1/$1 [R=301,L]

  # https redirect
  RewriteCond %{HTTPS} !=on
  RewriteRule .* https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

  # If an existing asset or directory is requested go to it as it is
  RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -f [OR]
  RewriteCond %{DOCUMENT_ROOT}%{REQUEST_URI} -d
  RewriteRule ^ - [L]

  # If the requested resource doesn't exist, use index.html
  RewriteRule ^ /index.html
</IfModule>