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Twenty Twenty-One: Only load IE specific polyfills when actually using Internet Exploreer. 

The `twenty-twenty-one-ie11-polyfills` script now has a `null` source, and the new `twenty-twenty-one-ie11-polyfills-asset` (which points to the actual `polyfills.js` source) will be loaded only if IE is detected by through the use of `wp_get_script_polyfill()`.

Because the original script name remains the same, this change is backwards compatible with any code registering `twenty-twenty-one-id11-polyfills` as a script dependency.

Props poena, ismail.elkorchi, peterwilsoncc
Fixes #52098.
Built from https://develop.svn.wordpress.org/trunk@49865


git-svn-id: http://core.svn.wordpress.org/trunk@49584 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
desrosj 2020-12-22 15:44:08 +00:00
parent c58be3c57e
commit b0fe9f059c
2 changed files with 22 additions and 3 deletions
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23
wp-content/themes/twentytwentyone/functions.php
View File

@ -396,7 +396,7 @@ add_action( 'after_setup_theme', 'twenty_twenty_one_content_width', 0 );
function twenty_twenty_one_scripts() {
// Note, the is_IE global variable is defined by WordPress and is used
// to detect if the current browser is internet explorer.
global $is_IE;
global $is_IE, $wp_scripts;
if ( $is_IE ) {
// If IE 11 or below, use a flattened stylesheet with static values replacing CSS Variables.
wp_enqueue_style( 'twenty-twenty-one-style', get_template_directory_uri() . '/assets/css/ie.css', array(), wp_get_theme()->get( 'Version' ) );
@ -416,14 +416,33 @@ function twenty_twenty_one_scripts() {
wp_enqueue_script( 'comment-reply' );
}
// Register the IE11 polyfill file.
wp_register_script(
'twenty-twenty-one-ie11-polyfills',
'twenty-twenty-one-ie11-polyfills-asset',
get_template_directory_uri() . '/assets/js/polyfills.js',
array(),
wp_get_theme()->get( 'Version' ),
true
);
// Register the IE11 polyfill loader.
wp_register_script(
'twenty-twenty-one-ie11-polyfills',
null,
array(),
wp_get_theme()->get( 'Version' ),
true
);
wp_add_inline_script(
'twenty-twenty-one-ie11-polyfills',
wp_get_script_polyfill(
$wp_scripts,
array(
'Element.prototype.matches && Element.prototype.closest && window.NodeList && NodeList.prototype.forEach' => 'twenty-twenty-one-ie11-polyfills-asset',
)
)
);
// Main navigation scripts.
if ( has_nav_menu( 'primary' ) ) {
wp_enqueue_script(

2
wp-includes/version.php
View File

@ -13,7 +13,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.7-alpha-49864';
$wp_version = '5.7-alpha-49865';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.