read_json_file example

    public static function get_core_data() {
        if ( null !== static::$core && static::has_same_registered_blocks( 'core' ) ) {
            return static::$core;
        }

        $config = static::read_json_file( __DIR__ . '/theme.json' );
        $config = static::translate( $config );

        /** * Filters the default data provided by WordPress for global styles & settings. * * @since 6.1.0 * * @param WP_Theme_JSON_Data $theme_json Class to access and update the underlying data. */
        $theme_json   = apply_filters( 'wp_theme_json_data_default', new WP_Theme_JSON_Data( $config, 'default' ) );
        $config       = $theme_json->get_data();