Passing php data to external JS file

code.php

<?php

class Localize {

    private $_data = [];
    
    private function __construct () {}
    
    static public function get_instance() {
        static $Inst = null;
        
        if( $Inst === null ) {
            $Inst = new self();
        }
        
        return $Inst;
    }
    
    public function push( $key, $val ) {
        $this->_data[$key] = $val;
    }
    
    public function pull( $key ) {
        unset( $this->_data[$key] );
    }
    
    public function data() {
        return json_encode( $this->_data );
    }
    
    public function print() {
        echo $this->data();
    }
}

function lc() {
    return Localize::get_instance();
}

lc()->push( 'name', 'Ash' );
lc()->push( 'age', 32 );
lc()->push( 'job', 'Developer' );

?>
<script>
    const data = JSON.parse( '<?php lc()->print(); ?>' );
    
    console.log( data.name, data.age, data.job );
</script>