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[ReactDebugTools] add custom error type for future new hooks #24168

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merged 3 commits into from
Mar 30, 2022
Merged

[ReactDebugTools] add custom error type for future new hooks #24168

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60cb32b
[ReactDebugTools] add custom error type for future new hooks
mondaychen Mar 25, 2022
12ecbea
update per review comments
mondaychen Mar 29, 2022
ed70bfa
remove unused argument
mondaychen Mar 30, 2022
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21 changes: 19 additions & 2 deletions packages/react-debug-tools/src/ReactDebugHooks.js
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Original file line number Diff line number Diff line change
Expand Up @@ -356,6 +356,23 @@ const Dispatcher: DispatcherType = {
useId,
};

// create a proxy to throw a custom error
// in case future versions of React adds more hooks
const DispatcherProxyHandler = {
get(target, prop) {
if (target.hasOwnProperty(prop)) {
return target[prop];
}
const error = new Error('Missing method in Dispatcher: ' + prop);
// Note: This error name needs to stay in sync with react-devtools-shared
// TODO: refactor this if we ever combine the devtools and debug tools packages
error.name = 'UnsupportedFeatureError';
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@lunaruan lunaruan Mar 30, 2022 •
edited

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Sorry, I missed this! Could you make this error name something more package specific (ex. 'ReactDebugTools') to minimize name clashes?

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How about ReactDebugToolsError (for more consistency with built in error names)

throw error;
},
};

const DispatcherProxy = new Proxy(Dispatcher, DispatcherProxyHandler);

// Inspect

export type HookSource = {
Expand Down Expand Up @@ -664,7 +681,7 @@ export function inspectHooks<Props>(

const previousDispatcher = currentDispatcher.current;
let readHookLog;
currentDispatcher.current = Dispatcher;
currentDispatcher.current = DispatcherProxy;
let ancestorStackError;
try {
ancestorStackError = new Error();
Expand Down Expand Up @@ -708,7 +725,7 @@ function inspectHooksOfForwardRef<Props, Ref>(
): HooksTree {
const previousDispatcher = currentDispatcher.current;
let readHookLog;
currentDispatcher.current = Dispatcher;
currentDispatcher.current = DispatcherProxy;
let ancestorStackError;
try {
ancestorStackError = new Error();
Expand Down