Source

File: wp-includes/class-wp-editor.php

public static function enqueue_scripts( $default_scripts = false ) {
		if ( $default_scripts || self::$has_tinymce ) {
			wp_enqueue_script( 'editor' );
		}

		if ( $default_scripts || self::$has_quicktags ) {
			wp_enqueue_script( 'quicktags' );
			wp_enqueue_style( 'buttons' );
		}

		if ( $default_scripts || in_array( 'wplink', self::$plugins, true ) || in_array( 'link', self::$qt_buttons, true ) ) {
			wp_enqueue_script( 'wplink' );
			wp_enqueue_script( 'jquery-ui-autocomplete' );
		}

		if ( self::$has_medialib ) {
			add_thickbox();
			wp_enqueue_script( 'media-upload' );
			wp_enqueue_script( 'wp-embed' );
		} elseif ( $default_scripts ) {
			wp_enqueue_script( 'media-upload' );
		}

		/**
		 * Fires when scripts and styles are enqueued for the editor.
		 *
		 * @since 3.9.0
		 *
		 * @param array $to_load An array containing boolean values whether TinyMCE
		 *                       and Quicktags are being loaded.
		 */
		do_action(
			'wp_enqueue_editor',
			array(
				'tinymce'   => ( $default_scripts || self::$has_tinymce ),
				'quicktags' => ( $default_scripts || self::$has_quicktags ),
			)
		);
	}