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DevTools: Rely on sourcemaps to compute hook name of built-in hooks i…
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…n newer versions (#28593)
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@eps1lon
eps1lon authored Apr 11, 2024
1 parent 4354159 commit 4f5c812
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Showing 2 changed files with 73 additions and 37 deletions.
106 changes: 71 additions & 35 deletions packages/react-debug-tools/src/ReactDebugHooks.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ type HookLogEntry = {
stackError: Error,
value: mixed,
debugInfo: ReactDebugInfo | null,
dispatcherHookName: string,
};

let hookLog: Array<HookLogEntry> = [];
Expand Down Expand Up @@ -131,6 +132,8 @@ function getPrimitiveStackCache(): Map<string, Array<any>> {
);
} catch (x) {}
}

Dispatcher.useId();
} finally {
readHookLog = hookLog;
hookLog = [];
Expand Down Expand Up @@ -207,6 +210,7 @@ function use<T>(usable: Usable<T>): T {
value: fulfilledValue,
debugInfo:
thenable._debugInfo === undefined ? null : thenable._debugInfo,
dispatcherHookName: 'Use',
});
return fulfilledValue;
}
Expand All @@ -224,6 +228,7 @@ function use<T>(usable: Usable<T>): T {
value: thenable,
debugInfo:
thenable._debugInfo === undefined ? null : thenable._debugInfo,
dispatcherHookName: 'Use',
});
throw SuspenseException;
} else if (usable.$$typeof === REACT_CONTEXT_TYPE) {
Expand All @@ -236,6 +241,7 @@ function use<T>(usable: Usable<T>): T {
stackError: new Error(),
value,
debugInfo: null,
dispatcherHookName: 'Use',
});

return value;
Expand All @@ -254,6 +260,7 @@ function useContext<T>(context: ReactContext<T>): T {
stackError: new Error(),
value: value,
debugInfo: null,
dispatcherHookName: 'Context',
});
return value;
}
Expand All @@ -275,6 +282,7 @@ function useState<S>(
stackError: new Error(),
value: state,
debugInfo: null,
dispatcherHookName: 'State',
});
return [state, (action: BasicStateAction<S>) => {}];
}
Expand All @@ -297,6 +305,7 @@ function useReducer<S, I, A>(
stackError: new Error(),
value: state,
debugInfo: null,
dispatcherHookName: 'Reducer',
});
return [state, (action: A) => {}];
}
Expand All @@ -310,6 +319,7 @@ function useRef<T>(initialValue: T): {current: T} {
stackError: new Error(),
value: ref.current,
debugInfo: null,
dispatcherHookName: 'Ref',
});
return ref;
}
Expand All @@ -322,6 +332,7 @@ function useCacheRefresh(): () => void {
stackError: new Error(),
value: hook !== null ? hook.memoizedState : function refresh() {},
debugInfo: null,
dispatcherHookName: 'CacheRefresh',
});
return () => {};
}
Expand All @@ -337,6 +348,7 @@ function useLayoutEffect(
stackError: new Error(),
value: create,
debugInfo: null,
dispatcherHookName: 'LayoutEffect',
});
}

Expand All @@ -351,6 +363,7 @@ function useInsertionEffect(
stackError: new Error(),
value: create,
debugInfo: null,
dispatcherHookName: 'InsertionEffect',
});
}

Expand All @@ -365,6 +378,7 @@ function useEffect(
stackError: new Error(),
value: create,
debugInfo: null,
dispatcherHookName: 'Effect',
});
}

Expand All @@ -388,6 +402,7 @@ function useImperativeHandle<T>(
stackError: new Error(),
value: instance,
debugInfo: null,
dispatcherHookName: 'ImperativeHandle',
});
}

Expand All @@ -398,6 +413,7 @@ function useDebugValue(value: any, formatterFn: ?(value: any) => any) {
stackError: new Error(),
value: typeof formatterFn === 'function' ? formatterFn(value) : value,
debugInfo: null,
dispatcherHookName: 'DebugValue',
});
}

Expand All @@ -409,6 +425,7 @@ function useCallback<T>(callback: T, inputs: Array<mixed> | void | null): T {
stackError: new Error(),
value: hook !== null ? hook.memoizedState[0] : callback,
debugInfo: null,
dispatcherHookName: 'Callback',
});
return callback;
}
Expand All @@ -425,6 +442,7 @@ function useMemo<T>(
stackError: new Error(),
value,
debugInfo: null,
dispatcherHookName: 'Memo',
});
return value;
}
Expand All @@ -446,6 +464,7 @@ function useSyncExternalStore<T>(
stackError: new Error(),
value,
debugInfo: null,
dispatcherHookName: 'SyncExternalStore',
});
return value;
}
Expand All @@ -468,6 +487,7 @@ function useTransition(): [
stackError: new Error(),
value: isPending,
debugInfo: null,
dispatcherHookName: 'Transition',
});
return [isPending, () => {}];
}
Expand All @@ -481,6 +501,7 @@ function useDeferredValue<T>(value: T, initialValue?: T): T {
stackError: new Error(),
value: prevValue,
debugInfo: null,
dispatcherHookName: 'DeferredValue',
});
return prevValue;
}
Expand All @@ -494,6 +515,7 @@ function useId(): string {
stackError: new Error(),
value: id,
debugInfo: null,
dispatcherHookName: 'Id',
});
return id;
}
Expand Down Expand Up @@ -544,6 +566,7 @@ function useOptimistic<S, A>(
stackError: new Error(),
value: state,
debugInfo: null,
dispatcherHookName: 'Optimistic',
});
return [state, (action: A) => {}];
}
Expand Down Expand Up @@ -603,6 +626,7 @@ function useFormState<S, P>(
stackError: stackError,
value: value,
debugInfo: debugInfo,
dispatcherHookName: 'FormState',
});

if (error !== null) {
Expand Down Expand Up @@ -672,6 +696,7 @@ function useActionState<S, P>(
stackError: stackError,
value: value,
debugInfo: debugInfo,
dispatcherHookName: 'ActionState',
});

if (error !== null) {
Expand Down Expand Up @@ -759,8 +784,7 @@ export type HooksTree = Array<HooksNode>;
// of a hook call. A simple way to demonstrate this is wrapping `new Error()`
// in a wrapper constructor like a polyfill. That'll add an extra frame.
// Similar things can happen with the call to the dispatcher. The top frame
// may not be the primitive. Likewise the primitive can have fewer stack frames
// such as when a call to useState got inlined to use dispatcher.useState.
// may not be the primitive.
//
// We also can't assume that the last frame of the root call is the same
// frame as the last frame of the hook call because long stack traces can be
Expand Down Expand Up @@ -810,27 +834,8 @@ function findCommonAncestorIndex(rootStack: any, hookStack: any) {
return -1;
}

function isReactWrapper(functionName: any, primitiveName: string) {
if (!functionName) {
return false;
}
switch (primitiveName) {
case 'Context':
case 'Context (use)':
case 'Promise':
case 'Unresolved':
if (functionName.endsWith('use')) {
return true;
}
}
const expectedPrimitiveName = 'use' + primitiveName;
if (functionName.length < expectedPrimitiveName.length) {
return false;
}
return (
functionName.lastIndexOf(expectedPrimitiveName) ===
functionName.length - expectedPrimitiveName.length
);
function isReactWrapper(functionName: any, wrapperName: string) {
return parseHookName(functionName) === wrapperName;
}

function findPrimitiveIndex(hookStack: any, hook: HookLogEntry) {
Expand All @@ -841,17 +846,18 @@ function findPrimitiveIndex(hookStack: any, hook: HookLogEntry) {
}
for (let i = 0; i < primitiveStack.length && i < hookStack.length; i++) {
if (primitiveStack[i].source !== hookStack[i].source) {
// If the next two frames are functions called `useX` then we assume that they're part of the
// wrappers that the React packager or other packages adds around the dispatcher.
// If the next frame is a method from the dispatcher, we
// assume that the next frame after that is the actual public API call.
// This prohibits nesting dispatcher calls in hooks.
if (
i < hookStack.length - 1 &&
isReactWrapper(hookStack[i].functionName, hook.primitive)
isReactWrapper(hookStack[i].functionName, hook.dispatcherHookName)
) {
i++;
}
if (
i < hookStack.length - 1 &&
isReactWrapper(hookStack[i].functionName, hook.primitive)
isReactWrapper(hookStack[i].functionName, hook.dispatcherHookName)
) {
i++;
}
Expand All @@ -872,21 +878,41 @@ function parseTrimmedStack(rootStack: any, hook: HookLogEntry) {
primitiveIndex === -1 ||
rootIndex - primitiveIndex < 2
) {
// Something went wrong. Give up.
return null;
if (primitiveIndex === -1) {
// Something went wrong. Give up.
return [null, null];
} else {
return [hookStack[primitiveIndex - 1], null];
}
}
return hookStack.slice(primitiveIndex, rootIndex - 1);
return [
hookStack[primitiveIndex - 1],
hookStack.slice(primitiveIndex, rootIndex - 1),
];
}

function parseCustomHookName(functionName: void | string): string {
function parseHookName(functionName: void | string): string {
if (!functionName) {
return '';
}
let startIndex = functionName.lastIndexOf('.');
let startIndex = functionName.lastIndexOf('[as ');
if (startIndex !== -1) {
// Workaround for sourcemaps in Jest and Chrome.
// In `node --enable-source-maps`, we don't see "Object.useHostTransitionStatus [as useFormStatus]" but "Object.useFormStatus"
// "Object.useHostTransitionStatus [as useFormStatus]" -> "useFormStatus"
return parseHookName(functionName.slice(startIndex + '[as '.length, -1));
}
startIndex = functionName.lastIndexOf('.');
if (startIndex === -1) {
startIndex = 0;
} else {
startIndex += 1;
}
if (functionName.slice(startIndex, startIndex + 3) === 'use') {
if (functionName.length - startIndex === 3) {
return 'Use';
}
startIndex += 3;
}
return functionName.slice(startIndex);
Expand All @@ -903,7 +929,17 @@ function buildTree(
const stackOfChildren = [];
for (let i = 0; i < readHookLog.length; i++) {
const hook = readHookLog[i];
const stack = parseTrimmedStack(rootStack, hook);
const parseResult = parseTrimmedStack(rootStack, hook);
const primitiveFrame = parseResult[0];
const stack = parseResult[1];
let displayName = hook.displayName;
if (displayName === null && primitiveFrame !== null) {
displayName =
parseHookName(primitiveFrame.functionName) ||
// Older versions of React do not have sourcemaps.
// In those versions there was always a 1:1 mapping between wrapper and dispatcher method.
parseHookName(hook.dispatcherHookName);
}
if (stack !== null) {
// Note: The indices 0 <= n < length-1 will contain the names.
// The indices 1 <= n < length will contain the source locations.
Expand Down Expand Up @@ -934,7 +970,7 @@ function buildTree(
const levelChild: HooksNode = {
id: null,
isStateEditable: false,
name: parseCustomHookName(stack[j - 1].functionName),
name: parseHookName(stack[j - 1].functionName),
value: undefined,
subHooks: children,
debugInfo: null,
Expand All @@ -952,7 +988,7 @@ function buildTree(
}
prevStack = stack;
}
const {displayName, primitive, debugInfo} = hook;
const {primitive, debugInfo} = hook;

// For now, the "id" of stateful hooks is just the stateful hook index.
// Custom hooks have no ids, nor do non-stateful native hooks (e.g. Context, DebugValue).
Expand Down
4 changes: 2 additions & 2 deletions packages/react-debug-tools/src/__tests__/ReactHooksInspection-test.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -518,7 +518,7 @@ describe('ReactHooksInspection', () => {
},
"id": null,
"isStateEditable": false,
"name": "Promise",
"name": "Use",
"subHooks": [],
"value": "world",
},
Expand Down Expand Up @@ -568,7 +568,7 @@ describe('ReactHooksInspection', () => {
},
"id": null,
"isStateEditable": false,
"name": "Unresolved",
"name": "Use",
"subHooks": [],
"value": Any<Promise>,
}
Expand Down

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