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979bf48 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | "use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
0 && (module.exports = {
isHangingPromiseRejectionError: null,
makeDevtoolsIOAwarePromise: null,
makeHangingPromise: null
});
function _export(target, all) {
for(var name in all)Object.defineProperty(target, name, {
enumerable: true,
get: all[name]
});
}
_export(exports, {
isHangingPromiseRejectionError: function() {
return isHangingPromiseRejectionError;
},
makeDevtoolsIOAwarePromise: function() {
return makeDevtoolsIOAwarePromise;
},
makeHangingPromise: function() {
return makeHangingPromise;
}
});
function isHangingPromiseRejectionError(err) {
if (typeof err !== 'object' || err === null || !('digest' in err)) {
return false;
}
return err.digest === HANGING_PROMISE_REJECTION;
}
const HANGING_PROMISE_REJECTION = 'HANGING_PROMISE_REJECTION';
class HangingPromiseRejectionError extends Error {
constructor(route, expression){
super(`During prerendering, ${expression} rejects when the prerender is complete. Typically these errors are handled by React but if you move ${expression} to a different context by using \`setTimeout\`, \`after\`, or similar functions you may observe this error and you should handle it in that context. This occurred at route "${route}".`), this.route = route, this.expression = expression, this.digest = HANGING_PROMISE_REJECTION;
}
}
const abortListenersBySignal = new WeakMap();
function makeHangingPromise(signal, route, expression) {
if (signal.aborted) {
return Promise.reject(new HangingPromiseRejectionError(route, expression));
} else {
const hangingPromise = new Promise((_, reject)=>{
const boundRejection = reject.bind(null, new HangingPromiseRejectionError(route, expression));
let currentListeners = abortListenersBySignal.get(signal);
if (currentListeners) {
currentListeners.push(boundRejection);
} else {
const listeners = [
boundRejection
];
abortListenersBySignal.set(signal, listeners);
signal.addEventListener('abort', ()=>{
for(let i = 0; i < listeners.length; i++){
listeners[i]();
}
}, {
once: true
});
}
});
// We are fine if no one actually awaits this promise. We shouldn't consider this an unhandled rejection so
// we attach a noop catch handler here to suppress this warning. If you actually await somewhere or construct
// your own promise out of it you'll need to ensure you handle the error when it rejects.
hangingPromise.catch(ignoreReject);
return hangingPromise;
}
}
function ignoreReject() {}
function makeDevtoolsIOAwarePromise(underlying, requestStore, stage) {
if (requestStore.stagedRendering) {
// We resolve each stage in a timeout, so React DevTools will pick this up as IO.
return requestStore.stagedRendering.delayUntilStage(stage, undefined, underlying);
}
// in React DevTools if we resolve in a setTimeout we will observe
// the promise resolution as something that can suspend a boundary or root.
return new Promise((resolve)=>{
// Must use setTimeout to be considered IO React DevTools. setImmediate will not work.
setTimeout(()=>{
resolve(underlying);
}, 0);
});
}
//# sourceMappingURL=dynamic-rendering-utils.js.map |