first commit

wp-includes/js/dist/script-modules/block-library/search/view.js

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+// packages/block-library/build-module/search/view.mjs
+import {
+  store,
+  getContext,
+  getElement,
+  withSyncEvent
+} from "@wordpress/interactivity";
+var { actions } = store(
+  "core/search",
+  {
+    state: {
+      get ariaLabel() {
+        const {
+          isSearchInputVisible,
+          ariaLabelCollapsed,
+          ariaLabelExpanded
+        } = getContext();
+        return isSearchInputVisible ? ariaLabelExpanded : ariaLabelCollapsed;
+      },
+      get ariaControls() {
+        const { isSearchInputVisible, inputId } = getContext();
+        return isSearchInputVisible ? null : inputId;
+      },
+      get type() {
+        const { isSearchInputVisible } = getContext();
+        return isSearchInputVisible ? "submit" : "button";
+      },
+      get tabindex() {
+        const { isSearchInputVisible } = getContext();
+        return isSearchInputVisible ? "0" : "-1";
+      }
+    },
+    actions: {
+      openSearchInput: withSyncEvent((event) => {
+        const ctx = getContext();
+        const { ref } = getElement();
+        if (!ctx.isSearchInputVisible) {
+          event.preventDefault();
+          ctx.isSearchInputVisible = true;
+          ref.parentElement.querySelector("input").focus();
+        }
+      }),
+      closeSearchInput() {
+        const ctx = getContext();
+        ctx.isSearchInputVisible = false;
+      },
+      handleSearchKeydown: withSyncEvent((event) => {
+        const { ref } = getElement();
+        if (event?.key === "Escape") {
+          actions.closeSearchInput();
+          ref.querySelector("button").focus();
+        }
+      }),
+      handleSearchFocusout: withSyncEvent((event) => {
+        const { ref } = getElement();
+        if (!ref.contains(event.relatedTarget) && event.target !== window.document.activeElement) {
+          actions.closeSearchInput();
+        }
+      })
+    }
+  },
+  { lock: true }
+);

wp-includes/js/dist/script-modules/block-library/search/view.min.asset.php

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+<?php return array('dependencies' => array(), 'module_dependencies' => array(array('id' => '@wordpress/interactivity', 'import' => 'static')), 'version' => '38bd0e230eaffa354d2a');

wp-includes/js/dist/script-modules/block-library/search/view.min.js

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+import{store as i,getContext as n,getElement as a,withSyncEvent as c}from"@wordpress/interactivity";var{actions:s}=i("core/search",{state:{get ariaLabel(){let{isSearchInputVisible:e,ariaLabelCollapsed:t,ariaLabelExpanded:r}=n();return e?r:t},get ariaControls(){let{isSearchInputVisible:e,inputId:t}=n();return e?null:t},get type(){let{isSearchInputVisible:e}=n();return e?"submit":"button"},get tabindex(){let{isSearchInputVisible:e}=n();return e?"0":"-1"}},actions:{openSearchInput:c(e=>{let t=n(),{ref:r}=a();t.isSearchInputVisible||(e.preventDefault(),t.isSearchInputVisible=!0,r.parentElement.querySelector("input").focus())}),closeSearchInput(){let e=n();e.isSearchInputVisible=!1},handleSearchKeydown:c(e=>{let{ref:t}=a();e?.key==="Escape"&&(s.closeSearchInput(),t.querySelector("button").focus())}),handleSearchFocusout:c(e=>{let{ref:t}=a();!t.contains(e.relatedTarget)&&e.target!==window.document.activeElement&&s.closeSearchInput()})}},{lock:!0});