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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 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | "use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, /**
* In the web server, there is currently no incremental cache provided and we
* always SSR the page.
*/ "default", {
enumerable: true,
get: function() {
return WebResponseCache;
}
});
const _detachedpromise = require("../../lib/detached-promise");
class WebResponseCache {
constructor(minimalMode){
this.pendingResponses = new Map();
// this is a hack to avoid Webpack knowing this is equal to this.minimalMode
// because we replace this.minimalMode to true in production bundles.
Object.assign(this, {
minimalMode
});
}
get(key, responseGenerator, context) {
var _this_previousCacheItem;
// ensure on-demand revalidate doesn't block normal requests
const pendingResponseKey = key ? `${key}-${context.isOnDemandRevalidate ? '1' : '0'}` : null;
const pendingResponse = pendingResponseKey ? this.pendingResponses.get(pendingResponseKey) : null;
if (pendingResponse) {
return pendingResponse;
}
const { promise, resolve: resolver, reject: rejecter } = new _detachedpromise.DetachedPromise();
if (pendingResponseKey) {
this.pendingResponses.set(pendingResponseKey, promise);
}
let hasResolved = false;
const resolve = (cacheEntry)=>{
if (pendingResponseKey) {
// Ensure all reads from the cache get the latest value.
this.pendingResponses.set(pendingResponseKey, Promise.resolve(cacheEntry));
}
if (!hasResolved) {
hasResolved = true;
resolver(cacheEntry);
}
};
// we keep the previous cache entry around to leverage
// when the incremental cache is disabled in minimal mode
if (pendingResponseKey && this.minimalMode && ((_this_previousCacheItem = this.previousCacheItem) == null ? void 0 : _this_previousCacheItem.key) === pendingResponseKey && this.previousCacheItem.expiresAt > Date.now()) {
resolve(this.previousCacheItem.entry);
this.pendingResponses.delete(pendingResponseKey);
return promise;
}
// We wait to do any async work until after we've added our promise to
// `pendingResponses` to ensure that any any other calls will reuse the
// same promise until we've fully finished our work.
;
(async ()=>{
try {
const cacheEntry = await responseGenerator({
hasResolved
});
const resolveValue = cacheEntry === null ? null : {
...cacheEntry,
isMiss: true
};
// for on-demand revalidate wait to resolve until cache is set
if (!context.isOnDemandRevalidate) {
resolve(resolveValue);
}
if (key && cacheEntry && cacheEntry.cacheControl) {
this.previousCacheItem = {
key: pendingResponseKey || key,
entry: cacheEntry,
expiresAt: Date.now() + 1000
};
} else {
this.previousCacheItem = undefined;
}
if (context.isOnDemandRevalidate) {
resolve(resolveValue);
}
} catch (err) {
// while revalidating in the background we can't reject as
// we already resolved the cache entry so log the error here
if (hasResolved) {
console.error(err);
} else {
rejecter(err);
}
} finally{
if (pendingResponseKey) {
this.pendingResponses.delete(pendingResponseKey);
}
}
})();
return promise;
}
}
//# sourceMappingURL=web.js.map |