Group grep results by the searched patterns into an array of objects

In PHP I am searching and counting all the use cases of some classes in almost all files, with grep.

\exec("grep -orE '" . $classesBarred . "' ../../front/src/components | sort | uniq -c", $allClassesCount);

Where $classesBarred contains a string of classes like search-unfocused|bg-app|enlarged-window (but much more).

The current result is

'      2 ../../front/src/components/Actions/ActionOwner.vue:show', 
'      1 ../../front/src/components/Actions/ActionOwner.vue:action', 
'      1 ../../front/src/components/Actions/ActionOwner.vue:show', 
'      5 ../../front/src/components/Actions/ActionOwner.vue:action', 
'      1 ../../front/src/components/Actions/ActionOwner.vue:show',
.... (plus a few hundred more lines like these)

I would need the result in an array, something like:

[
  {show: 38}, {action: 123}, {search-unfocused: 90}, {....}
]

EDIT:
@Freeman provided a solution to my question here, using awk

grep -orE "btn-gray|btn-outline-white" ../../front/src/components | awk -F: '{print $2}' | awk -F/ '{print $NF}' | sort | uniq -c | awk '{print $2 "::" $1}'

which gave this result:

btn-gray::1
btn-outline-white::13

yes as I can see, your code uses awk to rearrange output from grep into two columns, one is class name, and two contains the count,
the the output is like this :

search-unfocused 90
bg-app 5
enlarged-window 12

now you can easily, parse this output into an array by PHP like this :

$results = array();
foreach ($allClassesCount as $line) {
  $parts = explode(" ", $line);
  $className = $parts[0];
  $count = (int)$parts[1];
  if (!isset($results[$className])) {
    $results[$className] = $count;
  } else {
    $results[$className] += $count;
  }
}

and the array result is like below :

[
  "search-unfocused" => 90,
  "bg-app" => 5,
  "enlarged-window" => 12,
  ...
]

Update :<br>
If you insist on using awk and sed, you can do it like this:

grep -orE "$classesBarred" ../../front/src/components | awk -F '/' '{print $NF}' | awk -F ':' '{print $2}' | sort | uniq -c | awk '{gsub(/^[ \t]+|[ \t]+$/, "", $2); print "{\""$2"\": "$1"},"}' | paste -sd '' | sed 's/,$//' | awk '{print "["$0"]"}'

and the result is like this :

[
  {"show": 38},
  {"action": 123},
  {"search-unfocused": 90},
  {....}
]

good luck!