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use-sync-external-store

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Comparing version 0.0.0-experimental-6f23540c7d-20240528 to 0.0.0-experimental-6fb39ec9e9-20240621

312

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

@@ -11,244 +11,86 @@ /**

'use strict';
if (process.env.NODE_ENV !== "production") {
(function() {
'use strict';
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');
var ReactSharedInternals = React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE;
function error(format) {
{
{
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
args[_key2 - 1] = arguments[_key2];
}
printWarning('error', format, args);
"use strict";
"production" !== process.env.NODE_ENV &&
(function () {
function is(x, y) {
return (x === y && (0 !== x || 1 / x === 1 / y)) || (x !== x && y !== y);
}
}
} // eslint-disable-next-line react-internal/no-production-logging
var supportsCreateTask = !!console.createTask;
function printWarning(level, format, args) {
// When changing this logic, you might want to also
// update consoleWithStackDev.www.js as well.
{
var isErrorLogger = format === '%s\n\n%s\n' || format === '%o\n\n%s\n\n%s\n';
if (!supportsCreateTask && ReactSharedInternals.getCurrentStack) {
// We only add the current stack to the console when createTask is not supported.
// Since createTask requires DevTools to be open to work, this means that stacks
// can be lost while DevTools isn't open but we can't detect this.
var stack = ReactSharedInternals.getCurrentStack();
if (stack !== '') {
format += '%s';
args = args.concat([stack]);
function useSyncExternalStore$2(subscribe, getSnapshot) {
didWarnOld18Alpha ||
void 0 === React.startTransition ||
((didWarnOld18Alpha = !0),
console.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"You are using an outdated, pre-release alpha of React 18 that does not support useSyncExternalStore.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."
));
var value = getSnapshot();
if (!didWarnUncachedGetSnapshot) {
var cachedValue = getSnapshot();
objectIs(value, cachedValue) ||
(console.error(
"The result of getSnapshot should be cached to avoid an infinite loop"
),
(didWarnUncachedGetSnapshot = !0));
}
}
if (isErrorLogger) {
// Don't prefix our default logging formatting in ReactFiberErrorLoggger.
// Don't toString the arguments.
args.unshift(format);
} else {
// TODO: Remove this prefix and stop toStringing in the wrapper and
// instead do it at each callsite as needed.
// Careful: RN currently depends on this prefix
// eslint-disable-next-line react-internal/safe-string-coercion
args = args.map(function (item) {
return String(item);
cachedValue = useState({
inst: { value: value, getSnapshot: getSnapshot }
});
args.unshift('Warning: ' + format);
} // We intentionally don't use spread (or .apply) directly because it
// breaks IE9: https://github.com/facebook/react/issues/13610
// eslint-disable-next-line react-internal/no-production-logging
Function.prototype.apply.call(console[level], console, args);
}
}
/**
* 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 objectIs = // $FlowFixMe[method-unbinding]
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$2(subscribe, getSnapshot, // Note: The 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.');
}
var inst = cachedValue[0].inst,
forceUpdate = cachedValue[1];
useLayoutEffect(
function () {
inst.value = value;
inst.getSnapshot = getSnapshot;
checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
},
[subscribe, value, getSnapshot]
);
useEffect(
function () {
checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
return subscribe(function () {
checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
});
},
[subscribe]
);
useDebugValue(value);
return value;
}
} // 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) {
var cachedValue = getSnapshot();
if (!objectIs(value, cachedValue)) {
error('The result of getSnapshot should be cached to avoid an infinite loop');
didWarnUncachedGetSnapshot = true;
function checkIfSnapshotChanged(inst) {
var latestGetSnapshot = inst.getSnapshot;
inst = inst.value;
try {
var nextValue = latestGetSnapshot();
return !objectIs(inst, nextValue);
} catch (error) {
return !0;
}
}
} // 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
function useSyncExternalStore$1(subscribe, getSnapshot) {
return 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;
}
function checkIfSnapshotChanged(inst) {
var latestGetSnapshot = inst.getSnapshot;
var prevValue = inst.value;
try {
var nextValue = latestGetSnapshot();
return !objectIs(prevValue, nextValue);
} catch (error) {
return true;
}
}
function useSyncExternalStore$1(subscribe, getSnapshot, getServerSnapshot) {
// Note: The 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`.
return getSnapshot();
}
var canUseDOM = !!(typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined');
var isServerEnvironment = !canUseDOM;
var shim = isServerEnvironment ? useSyncExternalStore$1 : useSyncExternalStore$2;
var useSyncExternalStore = React.useSyncExternalStore !== undefined ? React.useSyncExternalStore : shim;
exports.useSyncExternalStore = useSyncExternalStore;
if (
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop ===
'function'
) {
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error());
}
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(Error());
var React = require("react"),
objectIs = "function" === typeof Object.is ? Object.is : is,
useState = React.useState,
useEffect = React.useEffect,
useLayoutEffect = React.useLayoutEffect,
useDebugValue = React.useDebugValue,
didWarnOld18Alpha = !1,
didWarnUncachedGetSnapshot = !1,
shim =
"undefined" === typeof window ||
"undefined" === typeof window.document ||
"undefined" === typeof window.document.createElement
? useSyncExternalStore$1
: useSyncExternalStore$2;
exports.useSyncExternalStore =
void 0 !== React.useSyncExternalStore ? React.useSyncExternalStore : shim;
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(Error());
})();
}

295

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

@@ -11,232 +11,79 @@ /**

'use strict';
if (process.env.NODE_ENV !== "production") {
(function() {
'use strict';
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');
var ReactSharedInternals = React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE;
function error(format) {
{
{
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
args[_key2 - 1] = arguments[_key2];
}
printWarning('error', format, args);
"use strict";
"production" !== process.env.NODE_ENV &&
(function () {
function is(x, y) {
return (x === y && (0 !== x || 1 / x === 1 / y)) || (x !== x && y !== y);
}
}
} // eslint-disable-next-line react-internal/no-production-logging
var supportsCreateTask = !!console.createTask;
function printWarning(level, format, args) {
// When changing this logic, you might want to also
// update consoleWithStackDev.www.js as well.
{
var isErrorLogger = format === '%s\n\n%s\n' || format === '%o\n\n%s\n\n%s\n';
if (!supportsCreateTask && ReactSharedInternals.getCurrentStack) {
// We only add the current stack to the console when createTask is not supported.
// Since createTask requires DevTools to be open to work, this means that stacks
// can be lost while DevTools isn't open but we can't detect this.
var stack = ReactSharedInternals.getCurrentStack();
if (stack !== '') {
format += '%s';
args = args.concat([stack]);
function useSyncExternalStore$1(subscribe, getSnapshot) {
didWarnOld18Alpha ||
void 0 === React.startTransition ||
((didWarnOld18Alpha = !0),
console.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."
));
var value = getSnapshot();
if (!didWarnUncachedGetSnapshot) {
var cachedValue = getSnapshot();
objectIs(value, cachedValue) ||
(console.error(
"The result of getSnapshot should be cached to avoid an infinite loop"
),
(didWarnUncachedGetSnapshot = !0));
}
}
if (isErrorLogger) {
// Don't prefix our default logging formatting in ReactFiberErrorLoggger.
// Don't toString the arguments.
args.unshift(format);
} else {
// TODO: Remove this prefix and stop toStringing in the wrapper and
// instead do it at each callsite as needed.
// Careful: RN currently depends on this prefix
// eslint-disable-next-line react-internal/safe-string-coercion
args = args.map(function (item) {
return String(item);
cachedValue = useState({
inst: { value: value, getSnapshot: getSnapshot }
});
args.unshift('Warning: ' + format);
} // We intentionally don't use spread (or .apply) directly because it
// breaks IE9: https://github.com/facebook/react/issues/13610
// eslint-disable-next-line react-internal/no-production-logging
Function.prototype.apply.call(console[level], console, args);
}
}
/**
* 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 objectIs = // $FlowFixMe[method-unbinding]
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$1(subscribe, getSnapshot, // Note: The 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.');
}
var inst = cachedValue[0].inst,
forceUpdate = cachedValue[1];
useLayoutEffect(
function () {
inst.value = value;
inst.getSnapshot = getSnapshot;
checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
},
[subscribe, value, getSnapshot]
);
useEffect(
function () {
checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
return subscribe(function () {
checkIfSnapshotChanged(inst) && forceUpdate({ inst: inst });
});
},
[subscribe]
);
useDebugValue(value);
return value;
}
} // 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) {
var cachedValue = getSnapshot();
if (!objectIs(value, cachedValue)) {
error('The result of getSnapshot should be cached to avoid an infinite loop');
didWarnUncachedGetSnapshot = true;
function checkIfSnapshotChanged(inst) {
var latestGetSnapshot = inst.getSnapshot;
inst = inst.value;
try {
var nextValue = latestGetSnapshot();
return !objectIs(inst, nextValue);
} catch (error) {
return !0;
}
}
} // 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;
}
function checkIfSnapshotChanged(inst) {
var latestGetSnapshot = inst.getSnapshot;
var prevValue = inst.value;
try {
var nextValue = latestGetSnapshot();
return !objectIs(prevValue, nextValue);
} catch (error) {
return true;
}
}
var shim = useSyncExternalStore$1;
var useSyncExternalStore = React.useSyncExternalStore !== undefined ? React.useSyncExternalStore : shim;
exports.useSyncExternalStore = useSyncExternalStore;
if (
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop ===
'function'
) {
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error());
}
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(Error());
var React = require("react"),
objectIs = "function" === typeof Object.is ? Object.is : is,
useState = React.useState,
useEffect = React.useEffect,
useLayoutEffect = React.useLayoutEffect,
useDebugValue = React.useDebugValue,
didWarnOld18Alpha = !1,
didWarnUncachedGetSnapshot = !1;
exports.useSyncExternalStore =
void 0 !== React.useSyncExternalStore
? React.useSyncExternalStore
: useSyncExternalStore$1;
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(Error());
})();
}

233

cjs/use-sync-external-store-shim/with-selector.development.js

@@ -11,155 +11,88 @@ /**

'use strict';
if (process.env.NODE_ENV !== "production") {
(function() {
'use strict';
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');
var shim = require('use-sync-external-store/shim');
/**
* 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 objectIs = // $FlowFixMe[method-unbinding]
typeof Object.is === 'function' ? Object.is : is;
var useSyncExternalStore = shim.useSyncExternalStore;
// for CommonJS interop.
var useRef = React.useRef,
useEffect = React.useEffect,
useMemo = React.useMemo,
useDebugValue = React.useDebugValue; // Same as useSyncExternalStore, but supports selector and isEqual arguments.
function useSyncExternalStoreWithSelector(subscribe, getSnapshot, getServerSnapshot, selector, isEqual) {
// Use this to track the rendered snapshot.
var instRef = useRef(null);
var inst;
if (instRef.current === null) {
inst = {
hasValue: false,
value: null
};
instRef.current = inst;
} else {
inst = instRef.current;
}
var _useMemo = useMemo(function () {
// Track the memoized state using closure variables that are local to this
// memoized instance of a getSnapshot function. Intentionally not using a
// useRef hook, because that state would be shared across all concurrent
// copies of the hook/component.
var hasMemo = false;
var memoizedSnapshot;
var memoizedSelection;
var memoizedSelector = function (nextSnapshot) {
if (!hasMemo) {
// The first time the hook is called, there is no memoized result.
hasMemo = true;
memoizedSnapshot = nextSnapshot;
var _nextSelection = selector(nextSnapshot);
if (isEqual !== undefined) {
// Even if the selector has changed, the currently rendered selection
// may be equal to the new selection. We should attempt to reuse the
// current value if possible, to preserve downstream memoizations.
if (inst.hasValue) {
var currentSelection = inst.value;
if (isEqual(currentSelection, _nextSelection)) {
memoizedSelection = currentSelection;
"use strict";
"production" !== process.env.NODE_ENV &&
(function () {
function is(x, y) {
return (x === y && (0 !== x || 1 / x === 1 / y)) || (x !== x && y !== y);
}
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(Error());
var React = require("react"),
shim = require("use-sync-external-store/shim"),
objectIs = "function" === typeof Object.is ? Object.is : is,
useSyncExternalStore = shim.useSyncExternalStore,
useRef = React.useRef,
useEffect = React.useEffect,
useMemo = React.useMemo,
useDebugValue = React.useDebugValue;
exports.useSyncExternalStoreWithSelector = function (
subscribe,
getSnapshot,
getServerSnapshot,
selector,
isEqual
) {
var instRef = useRef(null);
if (null === instRef.current) {
var inst = { hasValue: !1, value: null };
instRef.current = inst;
} else inst = instRef.current;
instRef = useMemo(
function () {
function memoizedSelector(nextSnapshot) {
if (!hasMemo) {
hasMemo = !0;
memoizedSnapshot = nextSnapshot;
nextSnapshot = selector(nextSnapshot);
if (void 0 !== isEqual && inst.hasValue) {
var currentSelection = inst.value;
if (isEqual(currentSelection, nextSnapshot))
return (memoizedSelection = currentSelection);
}
return (memoizedSelection = nextSnapshot);
}
currentSelection = memoizedSelection;
if (objectIs(memoizedSnapshot, nextSnapshot))
return currentSelection;
}
var nextSelection = selector(nextSnapshot);
if (void 0 !== isEqual && isEqual(currentSelection, nextSelection))
return currentSelection;
memoizedSnapshot = nextSnapshot;
return (memoizedSelection = nextSelection);
}
}
memoizedSelection = _nextSelection;
return _nextSelection;
} // We may be able to reuse the previous invocation's result.
// We may be able to reuse the previous invocation's result.
var prevSnapshot = memoizedSnapshot;
var prevSelection = memoizedSelection;
if (objectIs(prevSnapshot, nextSnapshot)) {
// The snapshot is the same as last time. Reuse the previous selection.
return prevSelection;
} // The snapshot has changed, so we need to compute a new selection.
// The snapshot has changed, so we need to compute a new selection.
var nextSelection = selector(nextSnapshot); // If a custom isEqual function is provided, use that to check if the data
// has changed. If it hasn't, return the previous selection. That signals
// to React that the selections are conceptually equal, and we can bail
// out of rendering.
// If a custom isEqual function is provided, use that to check if the data
// has changed. If it hasn't, return the previous selection. That signals
// to React that the selections are conceptually equal, and we can bail
// out of rendering.
if (isEqual !== undefined && isEqual(prevSelection, nextSelection)) {
return prevSelection;
}
memoizedSnapshot = nextSnapshot;
memoizedSelection = nextSelection;
return nextSelection;
}; // Assigning this to a constant so that Flow knows it can't change.
// Assigning this to a constant so that Flow knows it can't change.
var maybeGetServerSnapshot = getServerSnapshot === undefined ? null : getServerSnapshot;
var getSnapshotWithSelector = function () {
return memoizedSelector(getSnapshot());
var hasMemo = !1,
memoizedSnapshot,
memoizedSelection,
maybeGetServerSnapshot =
void 0 === getServerSnapshot ? null : getServerSnapshot;
return [
function () {
return memoizedSelector(getSnapshot());
},
null === maybeGetServerSnapshot
? void 0
: function () {
return memoizedSelector(maybeGetServerSnapshot());
}
];
},
[getSnapshot, getServerSnapshot, selector, isEqual]
);
var value = useSyncExternalStore(subscribe, instRef[0], instRef[1]);
useEffect(
function () {
inst.hasValue = !0;
inst.value = value;
},
[value]
);
useDebugValue(value);
return value;
};
var getServerSnapshotWithSelector = maybeGetServerSnapshot === null ? undefined : function () {
return memoizedSelector(maybeGetServerSnapshot());
};
return [getSnapshotWithSelector, getServerSnapshotWithSelector];
}, [getSnapshot, getServerSnapshot, selector, isEqual]),
getSelection = _useMemo[0],
getServerSelection = _useMemo[1];
var value = useSyncExternalStore(subscribe, getSelection, getServerSelection);
useEffect(function () {
// $FlowFixMe[incompatible-type] changing the variant using mutation isn't supported
inst.hasValue = true; // $FlowFixMe[incompatible-type]
inst.value = value;
}, [value]);
useDebugValue(value);
return value;
}
exports.useSyncExternalStoreWithSelector = useSyncExternalStoreWithSelector;
if (
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop ===
'function'
) {
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error());
}
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(Error());
})();
}

231

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

@@ -11,154 +11,87 @@ /**

'use strict';
if (process.env.NODE_ENV !== "production") {
(function() {
'use strict';
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');
/**
* 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 objectIs = // $FlowFixMe[method-unbinding]
typeof Object.is === 'function' ? Object.is : is;
var useSyncExternalStore = React.useSyncExternalStore;
// for CommonJS interop.
var useRef = React.useRef,
useEffect = React.useEffect,
useMemo = React.useMemo,
useDebugValue = React.useDebugValue; // Same as useSyncExternalStore, but supports selector and isEqual arguments.
function useSyncExternalStoreWithSelector(subscribe, getSnapshot, getServerSnapshot, selector, isEqual) {
// Use this to track the rendered snapshot.
var instRef = useRef(null);
var inst;
if (instRef.current === null) {
inst = {
hasValue: false,
value: null
};
instRef.current = inst;
} else {
inst = instRef.current;
}
var _useMemo = useMemo(function () {
// Track the memoized state using closure variables that are local to this
// memoized instance of a getSnapshot function. Intentionally not using a
// useRef hook, because that state would be shared across all concurrent
// copies of the hook/component.
var hasMemo = false;
var memoizedSnapshot;
var memoizedSelection;
var memoizedSelector = function (nextSnapshot) {
if (!hasMemo) {
// The first time the hook is called, there is no memoized result.
hasMemo = true;
memoizedSnapshot = nextSnapshot;
var _nextSelection = selector(nextSnapshot);
if (isEqual !== undefined) {
// Even if the selector has changed, the currently rendered selection
// may be equal to the new selection. We should attempt to reuse the
// current value if possible, to preserve downstream memoizations.
if (inst.hasValue) {
var currentSelection = inst.value;
if (isEqual(currentSelection, _nextSelection)) {
memoizedSelection = currentSelection;
"use strict";
"production" !== process.env.NODE_ENV &&
(function () {
function is(x, y) {
return (x === y && (0 !== x || 1 / x === 1 / y)) || (x !== x && y !== y);
}
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(Error());
var React = require("react"),
objectIs = "function" === typeof Object.is ? Object.is : is,
useSyncExternalStore = React.useSyncExternalStore,
useRef = React.useRef,
useEffect = React.useEffect,
useMemo = React.useMemo,
useDebugValue = React.useDebugValue;
exports.useSyncExternalStoreWithSelector = function (
subscribe,
getSnapshot,
getServerSnapshot,
selector,
isEqual
) {
var instRef = useRef(null);
if (null === instRef.current) {
var inst = { hasValue: !1, value: null };
instRef.current = inst;
} else inst = instRef.current;
instRef = useMemo(
function () {
function memoizedSelector(nextSnapshot) {
if (!hasMemo) {
hasMemo = !0;
memoizedSnapshot = nextSnapshot;
nextSnapshot = selector(nextSnapshot);
if (void 0 !== isEqual && inst.hasValue) {
var currentSelection = inst.value;
if (isEqual(currentSelection, nextSnapshot))
return (memoizedSelection = currentSelection);
}
return (memoizedSelection = nextSnapshot);
}
currentSelection = memoizedSelection;
if (objectIs(memoizedSnapshot, nextSnapshot))
return currentSelection;
}
var nextSelection = selector(nextSnapshot);
if (void 0 !== isEqual && isEqual(currentSelection, nextSelection))
return currentSelection;
memoizedSnapshot = nextSnapshot;
return (memoizedSelection = nextSelection);
}
}
memoizedSelection = _nextSelection;
return _nextSelection;
} // We may be able to reuse the previous invocation's result.
// We may be able to reuse the previous invocation's result.
var prevSnapshot = memoizedSnapshot;
var prevSelection = memoizedSelection;
if (objectIs(prevSnapshot, nextSnapshot)) {
// The snapshot is the same as last time. Reuse the previous selection.
return prevSelection;
} // The snapshot has changed, so we need to compute a new selection.
// The snapshot has changed, so we need to compute a new selection.
var nextSelection = selector(nextSnapshot); // If a custom isEqual function is provided, use that to check if the data
// has changed. If it hasn't, return the previous selection. That signals
// to React that the selections are conceptually equal, and we can bail
// out of rendering.
// If a custom isEqual function is provided, use that to check if the data
// has changed. If it hasn't, return the previous selection. That signals
// to React that the selections are conceptually equal, and we can bail
// out of rendering.
if (isEqual !== undefined && isEqual(prevSelection, nextSelection)) {
return prevSelection;
}
memoizedSnapshot = nextSnapshot;
memoizedSelection = nextSelection;
return nextSelection;
}; // Assigning this to a constant so that Flow knows it can't change.
// Assigning this to a constant so that Flow knows it can't change.
var maybeGetServerSnapshot = getServerSnapshot === undefined ? null : getServerSnapshot;
var getSnapshotWithSelector = function () {
return memoizedSelector(getSnapshot());
var hasMemo = !1,
memoizedSnapshot,
memoizedSelection,
maybeGetServerSnapshot =
void 0 === getServerSnapshot ? null : getServerSnapshot;
return [
function () {
return memoizedSelector(getSnapshot());
},
null === maybeGetServerSnapshot
? void 0
: function () {
return memoizedSelector(maybeGetServerSnapshot());
}
];
},
[getSnapshot, getServerSnapshot, selector, isEqual]
);
var value = useSyncExternalStore(subscribe, instRef[0], instRef[1]);
useEffect(
function () {
inst.hasValue = !0;
inst.value = value;
},
[value]
);
useDebugValue(value);
return value;
};
var getServerSnapshotWithSelector = maybeGetServerSnapshot === null ? undefined : function () {
return memoizedSelector(maybeGetServerSnapshot());
};
return [getSnapshotWithSelector, getServerSnapshotWithSelector];
}, [getSnapshot, getServerSnapshot, selector, isEqual]),
getSelection = _useMemo[0],
getServerSelection = _useMemo[1];
var value = useSyncExternalStore(subscribe, getSelection, getServerSelection);
useEffect(function () {
// $FlowFixMe[incompatible-type] changing the variant using mutation isn't supported
inst.hasValue = true; // $FlowFixMe[incompatible-type]
inst.value = value;
}, [value]);
useDebugValue(value);
return value;
}
exports.useSyncExternalStoreWithSelector = useSyncExternalStoreWithSelector;
if (
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop ===
'function'
) {
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error());
}
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(Error());
})();
}

102

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

@@ -11,88 +11,18 @@ /**

'use strict';
if (process.env.NODE_ENV !== "production") {
(function() {
'use strict';
if (
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart ===
'function'
) {
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error());
"use strict";
if ("production" !== process.env.NODE_ENV) {
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(Error());
var useSyncExternalStore$jscomp$inline_1 =
require("react").useSyncExternalStore;
console.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\nIf 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\nIf you only support React 18+, you can import directly from 'react'."
);
exports.useSyncExternalStore = useSyncExternalStore$jscomp$inline_1;
"undefined" !== typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ &&
"function" ===
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop &&
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(Error());
}
var React = require('react');
var ReactSharedInternals = React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE;
function error(format) {
{
{
for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
args[_key2 - 1] = arguments[_key2];
}
printWarning('error', format, args);
}
}
} // eslint-disable-next-line react-internal/no-production-logging
var supportsCreateTask = !!console.createTask;
function printWarning(level, format, args) {
// When changing this logic, you might want to also
// update consoleWithStackDev.www.js as well.
{
var isErrorLogger = format === '%s\n\n%s\n' || format === '%o\n\n%s\n\n%s\n';
if (!supportsCreateTask && ReactSharedInternals.getCurrentStack) {
// We only add the current stack to the console when createTask is not supported.
// Since createTask requires DevTools to be open to work, this means that stacks
// can be lost while DevTools isn't open but we can't detect this.
var stack = ReactSharedInternals.getCurrentStack();
if (stack !== '') {
format += '%s';
args = args.concat([stack]);
}
}
if (isErrorLogger) {
// Don't prefix our default logging formatting in ReactFiberErrorLoggger.
// Don't toString the arguments.
args.unshift(format);
} else {
// TODO: Remove this prefix and stop toStringing in the wrapper and
// instead do it at each callsite as needed.
// Careful: RN currently depends on this prefix
// eslint-disable-next-line react-internal/safe-string-coercion
args = args.map(function (item) {
return String(item);
});
args.unshift('Warning: ' + format);
} // We intentionally don't use spread (or .apply) directly because it
// breaks IE9: https://github.com/facebook/react/issues/13610
// eslint-disable-next-line react-internal/no-production-logging
Function.prototype.apply.call(console[level], console, args);
}
}
var useSyncExternalStore = React.useSyncExternalStore;
{
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'.");
}
exports.useSyncExternalStore = useSyncExternalStore;
if (
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop ===
'function'
) {
__REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error());
}
})();
}

4

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-6f23540c7d-20240528",
"version": "0.0.0-experimental-6fb39ec9e9-20240621",
"repository": {

@@ -22,3 +22,3 @@ "type": "git",

"peerDependencies": {
"react": "0.0.0-experimental-6f23540c7d-20240528"
"react": "0.0.0-experimental-6fb39ec9e9-20240621"
},

@@ -25,0 +25,0 @@ "devDependencies": {

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