use-sync-external-store - npm Package Compare versions

Comparing version 0.0.0-experimental-996da67b2-20211018 to 0.0.0-experimental-99eef9e2d-20220503

cjs/use-sync-external-store.development.js

@@ -1,2 +0,3 @@
-/** @license React vundefined
+/**
+ * @license React
  * use-sync-external-store.development.js
@@ -14,7 +15,14 @@ *
   (function() {
-'use strict';
 
-var React = require('react');
+          'use strict';
 
-var canUseDOM = !!(typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined');
+/* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
+if (
+  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
+  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart ===
+    'function'
+) {
+  __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error());
+}
+          var React = require('react');
 
@@ -60,155 +68,19 @@ var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
 
-/**
- * inlined Object.is polyfill to avoid requiring consumers ship their own
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
- */
-function is(x, y) {
-  return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare
-  ;
-}
+var useSyncExternalStore = React.useSyncExternalStore;
 
-var objectIs = typeof Object.is === 'function' ? Object.is : is;
-
-// dispatch for CommonJS interop named imports.
-
-var useState = React.useState,
-    useEffect = React.useEffect,
-    useLayoutEffect = React.useLayoutEffect,
-    useDebugValue = React.useDebugValue;
-var didWarnOld18Alpha = false;
-var didWarnUncachedGetSnapshot = false; // Disclaimer: This shim breaks many of the rules of React, and only works
-// because of a very particular set of implementation details and assumptions
-// -- change any one of them and it will break. The most important assumption
-// is that updates are always synchronous, because concurrent rendering is
-// only available in versions of React that also have a built-in
-// useSyncExternalStore API. And we only use this shim when the built-in API
-// does not exist.
-//
-// Do not assume that the clever hacks used by this hook also work in general.
-// The point of this shim is to replace the need for hacks by other libraries.
-
-function useSyncExternalStore(subscribe, getSnapshot, // Note: The client shim does not use getServerSnapshot, because pre-18
-// versions of React do not expose a way to check if we're hydrating. So
-// users of the shim will need to track that themselves and return the
-// correct value from `getSnapshot`.
-getServerSnapshot) {
-  {
-    if (!didWarnOld18Alpha) {
-      if (React.startTransition !== undefined) {
-        didWarnOld18Alpha = true;
-
-        error('You are using an outdated, pre-release alpha of React 18 that ' + 'does not support useSyncExternalStore. The ' + 'use-sync-external-store shim will not work correctly. Upgrade ' + 'to a newer pre-release.');
-      }
-    }
-  } // Read the current snapshot from the store on every render. Again, this
-  // breaks the rules of React, and only works here because of specific
-  // implementation details, most importantly that updates are
-  // always synchronous.
-
-
-  var value = getSnapshot();
-
-  {
-    if (!didWarnUncachedGetSnapshot) {
-      if (value !== getSnapshot()) {
-        error('The result of getSnapshot should be cached to avoid an infinite loop');
-
-        didWarnUncachedGetSnapshot = true;
-      }
-    }
-  } // Because updates are synchronous, we don't queue them. Instead we force a
-  // re-render whenever the subscribed state changes by updating an some
-  // arbitrary useState hook. Then, during render, we call getSnapshot to read
-  // the current value.
-  //
-  // Because we don't actually use the state returned by the useState hook, we
-  // can save a bit of memory by storing other stuff in that slot.
-  //
-  // To implement the early bailout, we need to track some things on a mutable
-  // object. Usually, we would put that in a useRef hook, but we can stash it in
-  // our useState hook instead.
-  //
-  // To force a re-render, we call forceUpdate({inst}). That works because the
-  // new object always fails an equality check.
-
-
-  var _useState = useState({
-    inst: {
-      value: value,
-      getSnapshot: getSnapshot
-    }
-  }),
-      inst = _useState[0].inst,
-      forceUpdate = _useState[1]; // Track the latest getSnapshot function with a ref. This needs to be updated
-  // in the layout phase so we can access it during the tearing check that
-  // happens on subscribe.
-
-
-  useLayoutEffect(function () {
-    inst.value = value;
-    inst.getSnapshot = getSnapshot; // Whenever getSnapshot or subscribe changes, we need to check in the
-    // commit phase if there was an interleaved mutation. In concurrent mode
-    // this can happen all the time, but even in synchronous mode, an earlier
-    // effect may have mutated the store.
-
-    if (checkIfSnapshotChanged(inst)) {
-      // Force a re-render.
-      forceUpdate({
-        inst: inst
-      });
-    }
-  }, [subscribe, value, getSnapshot]);
-  useEffect(function () {
-    // Check for changes right before subscribing. Subsequent changes will be
-    // detected in the subscription handler.
-    if (checkIfSnapshotChanged(inst)) {
-      // Force a re-render.
-      forceUpdate({
-        inst: inst
-      });
-    }
-
-    var handleStoreChange = function () {
-      // TODO: Because there is no cross-renderer API for batching updates, it's
-      // up to the consumer of this library to wrap their subscription event
-      // with unstable_batchedUpdates. Should we try to detect when this isn't
-      // the case and print a warning in development?
-      // The store changed. Check if the snapshot changed since the last time we
-      // read from the store.
-      if (checkIfSnapshotChanged(inst)) {
-        // Force a re-render.
-        forceUpdate({
-          inst: inst
-        });
-      }
-    }; // Subscribe to the store and return a clean-up function.
-
-
-    return subscribe(handleStoreChange);
-  }, [subscribe]);
-  useDebugValue(value);
-  return value;
+{
+  error("The main 'use-sync-external-store' entry point is not supported; all it " + "does is re-export useSyncExternalStore from the 'react' package, so " + 'it only works with React 18+.' + '\n\n' + 'If you wish to support React 16 and 17, import from ' + "'use-sync-external-store/shim' instead. It will fall back to a shimmed" + 'implementation when the native one is not available.' + '\n\n' + "If you only support React 18+, you can import directly from 'react'.");
 }
 
-function checkIfSnapshotChanged(inst) {
-  var latestGetSnapshot = inst.getSnapshot;
-  var prevValue = inst.value;
-
-  try {
-    var nextValue = latestGetSnapshot();
-    return !objectIs(prevValue, nextValue);
-  } catch (error) {
-    return true;
-  }
+exports.useSyncExternalStore = useSyncExternalStore;
+          /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
+if (
+  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
+  typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop ===
+    'function'
+) {
+  __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error());
 }
-
-function useSyncExternalStore$1(subscribe, getSnapshot, getServerSnapshot) {
-  return getSnapshot();
-}
-
-var builtInAPI = React.unstable_useSyncExternalStore;
-var useSyncExternalStore$2 = builtInAPI !== undefined ? builtInAPI : canUseDOM ? useSyncExternalStore : useSyncExternalStore$1;
-
-exports.useSyncExternalStore = useSyncExternalStore$2;
+        
   })();
 }

cjs/use-sync-external-store.production.min.js

@@ -1,2 +0,3 @@
-/** @license React vundefined
+/**
+ * @license React
  * use-sync-external-store.production.min.js
@@ -9,3 +10,2 @@ *
  */
-'use strict';var e=require("react"),h=!("undefined"===typeof window||"undefined"===typeof window.document||"undefined"===typeof window.document.createElement);function k(a,b){return a===b&&(0!==a||1/a===1/b)||a!==a&&b!==b}var l="function"===typeof Object.is?Object.is:k,m=e.useState,n=e.useEffect,p=e.useLayoutEffect,q=e.useDebugValue;
-function r(a,b){var d=b(),f=m({inst:{value:d,getSnapshot:b}}),c=f[0].inst,g=f[1];p(function(){c.value=d;c.getSnapshot=b;t(c)&&g({inst:c})},[a,d,b]);n(function(){t(c)&&g({inst:c});return a(function(){t(c)&&g({inst:c})})},[a]);q(d);return d}function t(a){var b=a.getSnapshot;a=a.value;try{var d=b();return!l(a,d)}catch(f){return!0}}function u(a,b){return b()}var v=e.unstable_useSyncExternalStore;exports.useSyncExternalStore=void 0!==v?v:h?r:u;
+'use strict';var a=require("react").useSyncExternalStore;exports.useSyncExternalStore=a;

package.json

 {
   "name": "use-sync-external-store",
   "description": "Backwards compatible shim for React's useSyncExternalStore. Works with any React that supports hooks.",
-  "version": "0.0.0-experimental-996da67b2-20211018",
+  "version": "0.0.0-experimental-99eef9e2d-20220503",
   "repository": {
@@ -13,6 +13,7 @@ "type": "git",
     "README.md",
-    "build-info.json",
     "index.js",
-    "extra.js",
     "index.native.js",
+    "with-selector.js",
+    "with-selector.native.js",
+    "shim/",
     "cjs/"
@@ -22,4 +23,4 @@ ],
   "peerDependencies": {
-    "react": "0.0.0-experimental-996da67b2-20211018"
+    "react": "0.0.0-experimental-99eef9e2d-20220503"
   }
 }

README.md

 # use-sync-external-store
 
-Backwards compatible shim for React's `useSyncExternalStore`. Works with any React that supports hooks.
+Backwards-compatible shim for [`React.useSyncExternalStore`](https://reactjs.org/docs/hooks-reference.html#usesyncexternalstore). Works with any React that supports Hooks.
 
-Until `useSyncExternalStore` is documented, refer to https://github.com/reactwg/react-18/discussions/86
+See also https://github.com/reactwg/react-18/discussions/86.

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Improved metrics

Total package byte prevSize

38085

increased by50.9%

Number of package files

18

increased by50%

Lines of code

816

increased by58.14%

Worsened metrics

Number of low quality alerts

6

increased by50%

Number of low supply chain risk alerts

10

increased by66.67%

Number of medium supply chain risk alerts

1

increased byInfinity%

No dependency changes