wp_tinymce_inline_scripts() WordPress Function

function wp_tinymce_inline_scripts() {
	global $wp_scripts;

	/** This filter is documented in wp-includes/class-wp-editor.php */
	$editor_settings = apply_filters( 'wp_editor_settings', array( 'tinymce' => true ), 'classic-block' );

	$tinymce_plugins = array(
		'charmap',
		'colorpicker',
		'hr',
		'lists',
		'media',
		'paste',
		'tabfocus',
		'textcolor',
		'fullscreen',
		'wordpress',
		'wpautoresize',
		'wpeditimage',
		'wpemoji',
		'wpgallery',
		'wplink',
		'wpdialogs',
		'wptextpattern',
		'wpview',
	);

	/** This filter is documented in wp-includes/class-wp-editor.php */
	$tinymce_plugins = apply_filters( 'tiny_mce_plugins', $tinymce_plugins, 'classic-block' );
	$tinymce_plugins = array_unique( $tinymce_plugins );

	$disable_captions = false;
	// Runs after `tiny_mce_plugins` but before `mce_buttons`.
	/** This filter is documented in wp-admin/includes/media.php */
	if ( apply_filters( 'disable_captions', '' ) ) {
		$disable_captions = true;
	}

	$toolbar1 = array(
		'formatselect',
		'bold',
		'italic',
		'bullist',
		'numlist',
		'blockquote',
		'alignleft',
		'aligncenter',
		'alignright',
		'link',
		'unlink',
		'wp_more',
		'spellchecker',
		'wp_add_media',
		'wp_adv',
	);

	/** This filter is documented in wp-includes/class-wp-editor.php */
	$toolbar1 = apply_filters( 'mce_buttons', $toolbar1, 'classic-block' );

	$toolbar2 = array(
		'strikethrough',
		'hr',
		'forecolor',
		'pastetext',
		'removeformat',
		'charmap',
		'outdent',
		'indent',
		'undo',
		'redo',
		'wp_help',
	);

	/** This filter is documented in wp-includes/class-wp-editor.php */
	$toolbar2 = apply_filters( 'mce_buttons_2', $toolbar2, 'classic-block' );
	/** This filter is documented in wp-includes/class-wp-editor.php */
	$toolbar3 = apply_filters( 'mce_buttons_3', array(), 'classic-block' );
	/** This filter is documented in wp-includes/class-wp-editor.php */
	$toolbar4 = apply_filters( 'mce_buttons_4', array(), 'classic-block' );
	/** This filter is documented in wp-includes/class-wp-editor.php */
	$external_plugins = apply_filters( 'mce_external_plugins', array(), 'classic-block' );

	$tinymce_settings = array(
		'plugins'              => implode( ',', $tinymce_plugins ),
		'toolbar1'             => implode( ',', $toolbar1 ),
		'toolbar2'             => implode( ',', $toolbar2 ),
		'toolbar3'             => implode( ',', $toolbar3 ),
		'toolbar4'             => implode( ',', $toolbar4 ),
		'external_plugins'     => wp_json_encode( $external_plugins ),
		'classic_block_editor' => true,
	);

	if ( $disable_captions ) {
		$tinymce_settings['wpeditimage_disable_captions'] = true;
	}

	if ( ! empty( $editor_settings['tinymce'] ) && is_array( $editor_settings['tinymce'] ) ) {
		array_merge( $tinymce_settings, $editor_settings['tinymce'] );
	}

	/** This filter is documented in wp-includes/class-wp-editor.php */
	$tinymce_settings = apply_filters( 'tiny_mce_before_init', $tinymce_settings, 'classic-block' );

	// Do "by hand" translation from PHP array to js object.
	// Prevents breakage in some custom settings.
	$init_obj = '';
	foreach ( $tinymce_settings as $key => $value ) {
		if ( is_bool( $value ) ) {
			$val       = $value ? 'true' : 'false';
			$init_obj .= $key . ':' . $val . ',';
			continue;
		} elseif ( ! empty( $value ) && is_string( $value ) && (
			( '{' === $value[0] && '}' === $value[ strlen( $value ) - 1 ] ) ||
			( '[' === $value[0] && ']' === $value[ strlen( $value ) - 1 ] ) ||
			preg_match( '/^\(?function ?\(/', $value ) ) ) {
			$init_obj .= $key . ':' . $value . ',';
			continue;
		}
		$init_obj .= $key . ':"' . $value . '",';
	}

	$init_obj = '{' . trim( $init_obj, ' ,' ) . '}';

	$script = 'window.wpEditorL10n = {
		tinymce: {
			baseURL: ' . wp_json_encode( includes_url( 'js/tinymce' ) ) . ',
			suffix: ' . ( SCRIPT_DEBUG ? '""' : '".min"' ) . ',
			settings: ' . $init_obj . ',
		}
	}';

	$wp_scripts->add_inline_script( 'wp-block-library', $script, 'before' );
}