115 lines
3.2 KiB
JavaScript
115 lines
3.2 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
/** @typedef {import("./Resolver")} Resolver */
|
|
/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
|
|
/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
|
|
/** @typedef {import("./Resolver").ResolveContextYield} ResolveContextYield */
|
|
/** @typedef {{ [k: string]: undefined | ResolveRequest | ResolveRequest[] }} Cache */
|
|
|
|
/**
|
|
* @param {string} type type of cache
|
|
* @param {ResolveRequest} request request
|
|
* @param {boolean} withContext cache with context?
|
|
* @returns {string} cache id
|
|
*/
|
|
function getCacheId(type, request, withContext) {
|
|
return JSON.stringify({
|
|
type,
|
|
context: withContext ? request.context : "",
|
|
path: request.path,
|
|
query: request.query,
|
|
fragment: request.fragment,
|
|
request: request.request,
|
|
});
|
|
}
|
|
|
|
module.exports = class UnsafeCachePlugin {
|
|
/**
|
|
* @param {string | ResolveStepHook} source source
|
|
* @param {(request: ResolveRequest) => boolean} filterPredicate filterPredicate
|
|
* @param {Cache} cache cache
|
|
* @param {boolean} withContext withContext
|
|
* @param {string | ResolveStepHook} target target
|
|
*/
|
|
constructor(source, filterPredicate, cache, withContext, target) {
|
|
this.source = source;
|
|
this.filterPredicate = filterPredicate;
|
|
this.withContext = withContext;
|
|
this.cache = cache;
|
|
this.target = target;
|
|
}
|
|
|
|
/**
|
|
* @param {Resolver} resolver the resolver
|
|
* @returns {void}
|
|
*/
|
|
apply(resolver) {
|
|
const target = resolver.ensureHook(this.target);
|
|
resolver
|
|
.getHook(this.source)
|
|
.tapAsync("UnsafeCachePlugin", (request, resolveContext, callback) => {
|
|
if (!this.filterPredicate(request)) return callback();
|
|
const isYield = typeof resolveContext.yield === "function";
|
|
const cacheId = getCacheId(
|
|
isYield ? "yield" : "default",
|
|
request,
|
|
this.withContext,
|
|
);
|
|
const cacheEntry = this.cache[cacheId];
|
|
if (cacheEntry) {
|
|
if (isYield) {
|
|
const yield_ =
|
|
/** @type {ResolveContextYield} */
|
|
(resolveContext.yield);
|
|
if (Array.isArray(cacheEntry)) {
|
|
for (const result of cacheEntry) yield_(result);
|
|
} else {
|
|
yield_(cacheEntry);
|
|
}
|
|
return callback(null, null);
|
|
}
|
|
return callback(null, /** @type {ResolveRequest} */ (cacheEntry));
|
|
}
|
|
|
|
/** @type {ResolveContextYield | undefined} */
|
|
let yieldFn;
|
|
/** @type {ResolveContextYield | undefined} */
|
|
let yield_;
|
|
/** @type {ResolveRequest[]} */
|
|
const yieldResult = [];
|
|
if (isYield) {
|
|
yieldFn = resolveContext.yield;
|
|
yield_ = (result) => {
|
|
yieldResult.push(result);
|
|
};
|
|
}
|
|
|
|
resolver.doResolve(
|
|
target,
|
|
request,
|
|
null,
|
|
yield_ ? { ...resolveContext, yield: yield_ } : resolveContext,
|
|
(err, result) => {
|
|
if (err) return callback(err);
|
|
if (isYield) {
|
|
if (result) yieldResult.push(result);
|
|
for (const result of yieldResult) {
|
|
/** @type {ResolveContextYield} */
|
|
(yieldFn)(result);
|
|
}
|
|
this.cache[cacheId] = yieldResult;
|
|
return callback(null, null);
|
|
}
|
|
if (result) return callback(null, (this.cache[cacheId] = result));
|
|
callback();
|
|
},
|
|
);
|
|
});
|
|
}
|
|
};
|