# xspeed/1.1.6/includes/modules/Minify/MinifyModule.php

xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN, version 1.1.6. 281 lines.

- Page: https://pluginprobe.com/plugins/xspeed/1.1.6/code/includes/modules/Minify/MinifyModule.php
- Raw: https://pluginprobe.com/plugins/xspeed/1.1.6/raw/includes/modules/Minify/MinifyModule.php
- Modified: 2026-08-13T15:55:04+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
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```php
<?php
/**
 * Minify module.
 *
 * Owns the minify_html / minify_css / minify_js settings. Engine work
 * still happens in XSpeed\Minifier (filters style_loader_src and
 * script_loader_src), but the Module is now the storage and editing
 * authority. Settings live in xspeed_module_minify; the legacy
 * xspeed_options blob is drained on first boot and on POST.
 *
 * Tier: Free. See SETTINGS.md for the contract this module satisfies.
 *
 * @package XSpeed
 */

declare(strict_types=1);

namespace XSpeed\Modules\Minify;

defined( 'ABSPATH' ) || exit;

use XSpeed\Minifier as LegacyMinifier;
use XSpeed\Module;
use XSpeed\Settings_Manager;

final class MinifyModule extends Module {

	public const SLUG    = 'minify';
	public const TIER    = self::TIER_FREE;
	public const VERSION = '1.2.0';

	public function ui_metadata(): array {
		return array(
			'label'        => 'CSS & JavaScript',
			'tab_label'    => 'Minify', // its own tab on the CSS & JavaScript page
			'icon'         => 'Wand2',
			'description'  => 'Strip whitespace and rewrite enqueued CSS / JS.',
			// Host page: Minify (this module) / Critical CSS (Pro) / Unused
			// CSS (Pro) as tabs — the three CSS/JS optimizations live on one
			// page instead of three sidebar rows (FBS-83633).
			'custom_panel' => 'CssJsPanel',
		);
	}

	public function settings_schema(): array {
		return array(
			'minify_html' => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Minify HTML',
				'description' => 'Strip whitespace and comments from HTML output. Safe on most themes.',
			),
			'minify_css'  => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Minify CSS',
				'description' => 'Compress and rewrite enqueued local stylesheets. External CSS is left untouched.',
			),
			'minify_js'   => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Minify JavaScript',
				'description' => 'Compress enqueued local scripts. Disable if you hit script-loading conflicts on the frontend.',
			),
			'defer_js' => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Defer JavaScript',
				'description' => 'Add defer="defer" to enqueued script tags so they execute after HTML parsing. jQuery + its hard dependencies are skipped automatically.',
			),
			'delay_js' => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Delay JavaScript Until Interaction',
				'description' => 'Postpone script loading until the visitor scrolls, moves the mouse, taps, or presses a key. Drastically improves first paint on script-heavy pages; can break above-the-fold scripted UI — test before leaving on.',
			),
			'async_css' => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Load CSS Asynchronously',
				'description' => 'Rewrite stylesheet link tags to load non-blocking via the print-then-all pattern. Pairs well with critical-CSS workflows; can cause a flash of unstyled content if the theme has no critical CSS.',
			),
			'remove_query_strings' => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Remove Asset Query Strings',
				'description' => 'Strip ?ver=X.Y from enqueued CSS / JS URLs. Some CDN caches and proxies cache better when query strings are absent.',
			),
			'defer_js_excluded' => array(
				'type'        => 'list',
				'default'     => array( 'jquery-core', 'jquery-migrate' ),
				'item_type'   => 'string',
				'label'       => 'Defer / Delay Exclusions',
				'description' => 'Script handles OR URL substrings that skip defer + delay. Defaults exclude jQuery (most themes depend on it being available synchronously). One per line.',
				// Only relevant once defer OR delay is on — the exclusion list
				// governs both. Uses the `any` (OR) dependency form. (FBS-82227)
				'dependsOn'   => array(
					'any' => array(
						array( 'field' => 'defer_js' ),
						array( 'field' => 'delay_js' ),
					),
				),
			),
			'delay_js_targets' => array(
				'type'        => 'list',
				'default'     => array(),
				'item_type'   => 'string',
				'label'       => 'Delay Only These Scripts',
				'description' => 'Script handles OR URL substrings. When non-empty, ONLY matching scripts are delayed — everything else loads normally. Leave empty to delay all scripts (minus the exclusions above). Ideal for postponing one heavy third-party embed without touching the rest of the page. Handles are the more reliable selector — a URL substring has to match the script\'s original URL, and minification rewrites that to a hashed cache path. One per line.',
				'dependsOn'   => array( 'field' => 'delay_js' ),
			),
			'delay_js_timeout' => array(
				'type'        => 'int',
				'default'     => 8000,
				'min'         => 0,
				'max'         => 60000,
				'label'       => 'Delay Failsafe Timeout (ms)',
				'unit'        => 'ms',
				'description' => 'Load delayed scripts automatically after this many milliseconds when the visitor never interacts. Set to 0 for interaction-only, with no timer: a timer that fires inside a lab tool\'s measurement window loads the "delayed" scripts anyway and inflates the reported TTI. Keep a non-zero value if a delayed script must eventually run for visitors who never scroll, tap, or type.',
				'dependsOn'   => array( 'field' => 'delay_js' ),
			),
			'combine_css' => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Combine CSS Files',
				'description' => 'Concatenate enqueued local stylesheets into a single file (with @import and url(…) paths resolved). External CSS is left alone. Pairs poorly with HTTP/2 push — only enable on HTTP/1.1 hosts.',
			),
			'combine_js' => array(
				'type'        => 'bool',
				'default'     => false,
				'label'       => 'Combine JavaScript Files',
				'description' => 'Concatenate enqueued local scripts into a single file. External scripts + scripts marked async / deferred are left alone. Disable if you hit dependency-order issues; the combiner respects WordPress enqueue order but inline scripts attached via wp_add_inline_script can shift behavior.',
			),
		);
	}

	/**
	 * 1.1.0: drain minify_html / minify_css / minify_js from the legacy
	 * `xspeed_options` blob into this module's per-module option, then
	 * delete the keys from the legacy blob so duplicate sources can't
	 * re-appear. Idempotent — re-running is a no-op once the keys are
	 * gone from xspeed_options.
	 */
	public function migrations(): array {
		return array(
			'1.1.0' => static function ( array $opts ): array {
				$legacy = get_option( 'xspeed_options', array() );
				if ( ! is_array( $legacy ) ) {
					return $opts;
				}
				$dirty = false;
				foreach ( array( 'minify_html', 'minify_css', 'minify_js' ) as $key ) {
					if ( array_key_exists( $key, $legacy ) ) {
						$opts[ $key ] = (bool) $legacy[ $key ];
						unset( $legacy[ $key ] );
						$dirty       = true;
					}
				}
				if ( $dirty ) {
					update_option( 'xspeed_options', $legacy );
				}
				return $opts;
			},
		);
	}

	/**
	 * Conflict declarations. Detected automatically by Conflict_Registry,
	 * but listing them here keeps the module self-documenting.
	 */
	public function conflicts(): array {
		return array(
			array(
				'plugin'   => 'autoptimize/autoptimize.php',
				'feature'  => 'minify.html',
				'strategy' => \XSpeed\Conflict_Registry::STRATEGY_REFUSE,
				'reason'   => 'Autoptimize is active and handles minification.',
			),
			array(
				'plugin'   => 'wp-rocket/wp-rocket.php',
				'feature'  => 'minify.html',
				'strategy' => \XSpeed\Conflict_Registry::STRATEGY_REFUSE,
				'reason'   => 'WP Rocket already handles minification.',
			),
		);
	}

	public function cli_commands(): array {
		return array(
			array(
				'name'      => 'xspeed minify',
				'callback'  => array( $this, 'cli_handler' ),
				'shortdesc' => 'Inspect or purge xSpeed minify cache.',
				'synopsis'  => array(
					array(
						'type'     => 'positional',
						'name'     => 'action',
						'options'  => array( 'status', 'purge' ),
						'optional' => false,
					),
				),
			),
		);
	}

	/**
	 * On boot:
	 *   1. Seed our per-module option from the legacy blob if neither
	 *      our option nor the migration has run yet (covers the
	 *      already-installed-before-this-module-shipped path).
	 *   2. Instantiate the v1 Minifier engine; it now reads from
	 *      Settings_Manager::get('minify') via its updated read path.
	 */
	public function boot(): void {
		$this->seed_from_legacy_if_needed();
		new LegacyMinifier();
	}

	public function activate(): void {
		// Plugin activation hits all modules. Same seed logic — safe to
		// run more than once.
		$this->seed_from_legacy_if_needed();
	}

	private function seed_from_legacy_if_needed(): void {
		$existing = get_option( 'xspeed_module_minify', null );
		if ( null !== $existing ) {
			return;
		}
		$legacy = get_option( 'xspeed_options', array() );
		if ( ! is_array( $legacy ) ) {
			return;
		}
		$seed   = array( '_version' => self::VERSION );
		$dirty  = false;
		foreach ( array( 'minify_html', 'minify_css', 'minify_js' ) as $key ) {
			if ( array_key_exists( $key, $legacy ) ) {
				$seed[ $key ] = (bool) $legacy[ $key ];
				unset( $legacy[ $key ] );
				$dirty        = true;
			}
		}
		if ( $dirty ) {
			update_option( 'xspeed_module_minify', $seed );
			update_option( 'xspeed_options', $legacy );
		}
	}

	public function cli_handler( array $args, array $assoc ): void {
		$action = $args[0] ?? 'status';

		if ( 'status' === $action ) {
			$opts = Settings_Manager::get( self::SLUG );
			// A bare "on" is a lie when the skip guard is active: the
			// setting is stored, but Minifier::minify_html() returns its
			// input untouched and the delivered HTML is unchanged. Say so
			// on the same line, so the contradiction can never be read as
			// "minify is broken".
			$skip = \XSpeed\Minifier::skip_reason();
			$html_state = $opts['minify_html'] ? 'on' : 'off';
			if ( $opts['minify_html'] && '' !== $skip ) {
				$html_state .= ( 'wp_debug' === $skip )
					? ' (NOT APPLIED — WP_DEBUG is enabled; set WP_DEBUG to false to minify HTML)'
					: ' (NOT APPLIED — suppressed by the xspeed_skip_minify filter)';
			}
			\WP_CLI::log( sprintf( 'minify_html: %s', $html_state ) );
			\WP_CLI::log( sprintf( 'minify_css : %s', $opts['minify_css'] ? 'on' : 'off' ) );
			\WP_CLI::log( sprintf( 'minify_js  : %s', $opts['minify_js'] ? 'on' : 'off' ) );
			return;
		}

		if ( 'purge' === $action ) {
			LegacyMinifier::purge_minified();
			\WP_CLI::success( 'Minify cache purged.' );
			return;
		}

		\WP_CLI::error( "Unknown action: $action" );
	}
}

```