diff options
Diffstat (limited to 'node_modules/webpack/lib/cache/ResolverCachePlugin.js')
| -rw-r--r-- | node_modules/webpack/lib/cache/ResolverCachePlugin.js | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/node_modules/webpack/lib/cache/ResolverCachePlugin.js b/node_modules/webpack/lib/cache/ResolverCachePlugin.js deleted file mode 100644 index 4659d617..00000000 --- a/node_modules/webpack/lib/cache/ResolverCachePlugin.js +++ /dev/null @@ -1,357 +0,0 @@ -/* - MIT License http://www.opensource.org/licenses/mit-license.php - Author Tobias Koppers @sokra -*/ - -"use strict"; - -const LazySet = require("../util/LazySet"); -const makeSerializable = require("../util/makeSerializable"); - -/** @typedef {import("enhanced-resolve/lib/Resolver")} Resolver */ -/** @typedef {import("../CacheFacade").ItemCacheFacade} ItemCacheFacade */ -/** @typedef {import("../Compiler")} Compiler */ -/** @typedef {import("../FileSystemInfo")} FileSystemInfo */ -/** @typedef {import("../FileSystemInfo").Snapshot} Snapshot */ - -class CacheEntry { - constructor(result, snapshot) { - this.result = result; - this.snapshot = snapshot; - } - - serialize({ write }) { - write(this.result); - write(this.snapshot); - } - - deserialize({ read }) { - this.result = read(); - this.snapshot = read(); - } -} - -makeSerializable(CacheEntry, "webpack/lib/cache/ResolverCachePlugin"); - -/** - * @template T - * @param {Set<T> | LazySet<T>} set set to add items to - * @param {Set<T> | LazySet<T>} otherSet set to add items from - * @returns {void} - */ -const addAllToSet = (set, otherSet) => { - if (set instanceof LazySet) { - set.addAll(otherSet); - } else { - for (const item of otherSet) { - set.add(item); - } - } -}; - -/** - * @param {Object} object an object - * @param {boolean} excludeContext if true, context is not included in string - * @returns {string} stringified version - */ -const objectToString = (object, excludeContext) => { - let str = ""; - for (const key in object) { - if (excludeContext && key === "context") continue; - const value = object[key]; - if (typeof value === "object" && value !== null) { - str += `|${key}=[${objectToString(value, false)}|]`; - } else { - str += `|${key}=|${value}`; - } - } - return str; -}; - -class ResolverCachePlugin { - /** - * Apply the plugin - * @param {Compiler} compiler the compiler instance - * @returns {void} - */ - apply(compiler) { - const cache = compiler.getCache("ResolverCachePlugin"); - /** @type {FileSystemInfo} */ - let fileSystemInfo; - let snapshotOptions; - let realResolves = 0; - let cachedResolves = 0; - let cacheInvalidResolves = 0; - let concurrentResolves = 0; - compiler.hooks.thisCompilation.tap("ResolverCachePlugin", compilation => { - snapshotOptions = compilation.options.snapshot.resolve; - fileSystemInfo = compilation.fileSystemInfo; - compilation.hooks.finishModules.tap("ResolverCachePlugin", () => { - if (realResolves + cachedResolves > 0) { - const logger = compilation.getLogger("webpack.ResolverCachePlugin"); - logger.log( - `${Math.round( - (100 * realResolves) / (realResolves + cachedResolves) - )}% really resolved (${realResolves} real resolves with ${cacheInvalidResolves} cached but invalid, ${cachedResolves} cached valid, ${concurrentResolves} concurrent)` - ); - realResolves = 0; - cachedResolves = 0; - cacheInvalidResolves = 0; - concurrentResolves = 0; - } - }); - }); - /** - * @param {ItemCacheFacade} itemCache cache - * @param {Resolver} resolver the resolver - * @param {Object} resolveContext context for resolving meta info - * @param {Object} request the request info object - * @param {function((Error | null)=, Object=): void} callback callback function - * @returns {void} - */ - const doRealResolve = ( - itemCache, - resolver, - resolveContext, - request, - callback - ) => { - realResolves++; - const newRequest = { - _ResolverCachePluginCacheMiss: true, - ...request - }; - const newResolveContext = { - ...resolveContext, - stack: new Set(), - /** @type {LazySet<string>} */ - missingDependencies: new LazySet(), - /** @type {LazySet<string>} */ - fileDependencies: new LazySet(), - /** @type {LazySet<string>} */ - contextDependencies: new LazySet() - }; - let yieldResult; - let withYield = false; - if (typeof newResolveContext.yield === "function") { - yieldResult = []; - withYield = true; - newResolveContext.yield = obj => yieldResult.push(obj); - } - const propagate = key => { - if (resolveContext[key]) { - addAllToSet(resolveContext[key], newResolveContext[key]); - } - }; - const resolveTime = Date.now(); - resolver.doResolve( - resolver.hooks.resolve, - newRequest, - "Cache miss", - newResolveContext, - (err, result) => { - propagate("fileDependencies"); - propagate("contextDependencies"); - propagate("missingDependencies"); - if (err) return callback(err); - const fileDependencies = newResolveContext.fileDependencies; - const contextDependencies = newResolveContext.contextDependencies; - const missingDependencies = newResolveContext.missingDependencies; - fileSystemInfo.createSnapshot( - resolveTime, - fileDependencies, - contextDependencies, - missingDependencies, - snapshotOptions, - (err, snapshot) => { - if (err) return callback(err); - const resolveResult = withYield ? yieldResult : result; - // since we intercept resolve hook - // we still can get result in callback - if (withYield && result) yieldResult.push(result); - if (!snapshot) { - if (resolveResult) return callback(null, resolveResult); - return callback(); - } - itemCache.store( - new CacheEntry(resolveResult, snapshot), - storeErr => { - if (storeErr) return callback(storeErr); - if (resolveResult) return callback(null, resolveResult); - callback(); - } - ); - } - ); - } - ); - }; - compiler.resolverFactory.hooks.resolver.intercept({ - factory(type, hook) { - /** @type {Map<string, (function(Error=, Object=): void)[]>} */ - const activeRequests = new Map(); - /** @type {Map<string, [function(Error=, Object=): void, function(Error=, Object=): void][]>} */ - const activeRequestsWithYield = new Map(); - hook.tap( - "ResolverCachePlugin", - /** - * @param {Resolver} resolver the resolver - * @param {Object} options resolve options - * @param {Object} userOptions resolve options passed by the user - * @returns {void} - */ - (resolver, options, userOptions) => { - if (options.cache !== true) return; - const optionsIdent = objectToString(userOptions, false); - const cacheWithContext = - options.cacheWithContext !== undefined - ? options.cacheWithContext - : false; - resolver.hooks.resolve.tapAsync( - { - name: "ResolverCachePlugin", - stage: -100 - }, - (request, resolveContext, callback) => { - if (request._ResolverCachePluginCacheMiss || !fileSystemInfo) { - return callback(); - } - const withYield = typeof resolveContext.yield === "function"; - const identifier = `${type}${ - withYield ? "|yield" : "|default" - }${optionsIdent}${objectToString(request, !cacheWithContext)}`; - - if (withYield) { - const activeRequest = activeRequestsWithYield.get(identifier); - if (activeRequest) { - activeRequest[0].push(callback); - activeRequest[1].push(resolveContext.yield); - return; - } - } else { - const activeRequest = activeRequests.get(identifier); - if (activeRequest) { - activeRequest.push(callback); - return; - } - } - const itemCache = cache.getItemCache(identifier, null); - let callbacks, yields; - const done = withYield - ? (err, result) => { - if (callbacks === undefined) { - if (err) { - callback(err); - } else { - if (result) - for (const r of result) resolveContext.yield(r); - callback(null, null); - } - yields = undefined; - callbacks = false; - } else { - if (err) { - for (const cb of callbacks) cb(err); - } else { - for (let i = 0; i < callbacks.length; i++) { - const cb = callbacks[i]; - const yield_ = yields[i]; - if (result) for (const r of result) yield_(r); - cb(null, null); - } - } - activeRequestsWithYield.delete(identifier); - yields = undefined; - callbacks = false; - } - } - : (err, result) => { - if (callbacks === undefined) { - callback(err, result); - callbacks = false; - } else { - for (const callback of callbacks) { - callback(err, result); - } - activeRequests.delete(identifier); - callbacks = false; - } - }; - /** - * @param {Error=} err error if any - * @param {CacheEntry=} cacheEntry cache entry - * @returns {void} - */ - const processCacheResult = (err, cacheEntry) => { - if (err) return done(err); - - if (cacheEntry) { - const { snapshot, result } = cacheEntry; - fileSystemInfo.checkSnapshotValid( - snapshot, - (err, valid) => { - if (err || !valid) { - cacheInvalidResolves++; - return doRealResolve( - itemCache, - resolver, - resolveContext, - request, - done - ); - } - cachedResolves++; - if (resolveContext.missingDependencies) { - addAllToSet( - resolveContext.missingDependencies, - snapshot.getMissingIterable() - ); - } - if (resolveContext.fileDependencies) { - addAllToSet( - resolveContext.fileDependencies, - snapshot.getFileIterable() - ); - } - if (resolveContext.contextDependencies) { - addAllToSet( - resolveContext.contextDependencies, - snapshot.getContextIterable() - ); - } - done(null, result); - } - ); - } else { - doRealResolve( - itemCache, - resolver, - resolveContext, - request, - done - ); - } - }; - itemCache.get(processCacheResult); - if (withYield && callbacks === undefined) { - callbacks = [callback]; - yields = [resolveContext.yield]; - activeRequestsWithYield.set( - identifier, - /** @type {[any, any]} */ ([callbacks, yields]) - ); - } else if (callbacks === undefined) { - callbacks = [callback]; - activeRequests.set(identifier, callbacks); - } - } - ); - } - ); - return hook; - } - }); - } -} - -module.exports = ResolverCachePlugin; |