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664
app_vue/node_modules/enhanced-resolve/lib/CachedInputFileSystem.js
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vendored
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664
app_vue/node_modules/enhanced-resolve/lib/CachedInputFileSystem.js
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vendored
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const nextTick = require("process").nextTick;
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/** @typedef {import("./Resolver").FileSystem} FileSystem */
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/** @typedef {import("./Resolver").PathLike} PathLike */
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/** @typedef {import("./Resolver").PathOrFileDescriptor} PathOrFileDescriptor */
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/** @typedef {import("./Resolver").SyncFileSystem} SyncFileSystem */
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/** @typedef {FileSystem & SyncFileSystem} BaseFileSystem */
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/**
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* @template T
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* @typedef {import("./Resolver").FileSystemCallback<T>} FileSystemCallback<T>
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*/
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/**
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* @param {string} path path
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* @returns {string} dirname
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*/
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const dirname = path => {
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let idx = path.length - 1;
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while (idx >= 0) {
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const c = path.charCodeAt(idx);
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// slash or backslash
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if (c === 47 || c === 92) break;
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idx--;
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}
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if (idx < 0) return "";
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return path.slice(0, idx);
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};
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/**
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* @template T
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* @param {FileSystemCallback<T>[]} callbacks callbacks
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* @param {Error | null} err error
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* @param {T} result result
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*/
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const runCallbacks = (callbacks, err, result) => {
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if (callbacks.length === 1) {
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callbacks[0](err, result);
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callbacks.length = 0;
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return;
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}
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let error;
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for (const callback of callbacks) {
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try {
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callback(err, result);
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} catch (e) {
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if (!error) error = e;
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}
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}
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callbacks.length = 0;
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if (error) throw error;
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};
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class OperationMergerBackend {
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/**
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* @param {Function | undefined} provider async method in filesystem
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* @param {Function | undefined} syncProvider sync method in filesystem
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* @param {BaseFileSystem} providerContext call context for the provider methods
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*/
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constructor(provider, syncProvider, providerContext) {
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this._provider = provider;
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this._syncProvider = syncProvider;
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this._providerContext = providerContext;
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this._activeAsyncOperations = new Map();
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this.provide = this._provider
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? /**
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* @param {PathLike | PathOrFileDescriptor} path path
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* @param {object | FileSystemCallback<any> | undefined} options options
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* @param {FileSystemCallback<any>=} callback callback
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* @returns {any} result
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*/
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(path, options, callback) => {
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if (typeof options === "function") {
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callback = /** @type {FileSystemCallback<any>} */ (options);
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options = undefined;
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}
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if (
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typeof path !== "string" &&
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!Buffer.isBuffer(path) &&
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!(path instanceof URL) &&
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typeof path !== "number"
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) {
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/** @type {Function} */
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(callback)(
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new TypeError("path must be a string, Buffer, URL or number")
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);
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return;
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}
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if (options) {
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return /** @type {Function} */ (this._provider).call(
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this._providerContext,
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path,
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options,
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callback
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);
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}
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let callbacks = this._activeAsyncOperations.get(path);
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if (callbacks) {
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callbacks.push(callback);
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return;
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}
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this._activeAsyncOperations.set(path, (callbacks = [callback]));
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/** @type {Function} */
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(provider)(
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path,
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/**
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* @param {Error} err error
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* @param {any} result result
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*/
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(err, result) => {
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this._activeAsyncOperations.delete(path);
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runCallbacks(callbacks, err, result);
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}
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);
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}
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: null;
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this.provideSync = this._syncProvider
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? /**
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* @param {PathLike | PathOrFileDescriptor} path path
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* @param {object=} options options
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* @returns {any} result
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*/
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(path, options) => {
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return /** @type {Function} */ (this._syncProvider).call(
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this._providerContext,
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path,
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options
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);
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}
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: null;
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}
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purge() {}
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purgeParent() {}
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}
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/*
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IDLE:
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insert data: goto SYNC
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SYNC:
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before provide: run ticks
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event loop tick: goto ASYNC_ACTIVE
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ASYNC:
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timeout: run tick, goto ASYNC_PASSIVE
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ASYNC_PASSIVE:
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before provide: run ticks
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IDLE --[insert data]--> SYNC --[event loop tick]--> ASYNC_ACTIVE --[interval tick]-> ASYNC_PASSIVE
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^ |
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+---------[insert data]-------+
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*/
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const STORAGE_MODE_IDLE = 0;
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const STORAGE_MODE_SYNC = 1;
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const STORAGE_MODE_ASYNC = 2;
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/**
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* @callback Provide
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* @param {PathLike | PathOrFileDescriptor} path path
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* @param {any} options options
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* @param {FileSystemCallback<any>} callback callback
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* @returns {void}
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*/
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class CacheBackend {
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/**
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* @param {number} duration max cache duration of items
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* @param {function | undefined} provider async method
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* @param {function | undefined} syncProvider sync method
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* @param {BaseFileSystem} providerContext call context for the provider methods
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*/
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constructor(duration, provider, syncProvider, providerContext) {
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this._duration = duration;
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this._provider = provider;
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this._syncProvider = syncProvider;
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this._providerContext = providerContext;
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/** @type {Map<string, FileSystemCallback<any>[]>} */
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this._activeAsyncOperations = new Map();
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/** @type {Map<string, { err: Error | null, result?: any, level: Set<string> }>} */
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this._data = new Map();
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/** @type {Set<string>[]} */
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this._levels = [];
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for (let i = 0; i < 10; i++) this._levels.push(new Set());
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for (let i = 5000; i < duration; i += 500) this._levels.push(new Set());
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this._currentLevel = 0;
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this._tickInterval = Math.floor(duration / this._levels.length);
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/** @type {STORAGE_MODE_IDLE | STORAGE_MODE_SYNC | STORAGE_MODE_ASYNC} */
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this._mode = STORAGE_MODE_IDLE;
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/** @type {NodeJS.Timeout | undefined} */
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this._timeout = undefined;
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/** @type {number | undefined} */
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this._nextDecay = undefined;
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// @ts-ignore
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this.provide = provider ? this.provide.bind(this) : null;
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// @ts-ignore
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this.provideSync = syncProvider ? this.provideSync.bind(this) : null;
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}
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/**
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* @param {PathLike | PathOrFileDescriptor} path path
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* @param {any} options options
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* @param {FileSystemCallback<any>} callback callback
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* @returns {void}
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*/
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provide(path, options, callback) {
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if (typeof options === "function") {
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callback = options;
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options = undefined;
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}
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if (
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typeof path !== "string" &&
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!Buffer.isBuffer(path) &&
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!(path instanceof URL) &&
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typeof path !== "number"
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) {
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callback(new TypeError("path must be a string, Buffer, URL or number"));
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return;
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}
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const strPath = typeof path !== "string" ? path.toString() : path;
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if (options) {
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return /** @type {Function} */ (this._provider).call(
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this._providerContext,
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path,
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options,
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callback
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);
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}
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// When in sync mode we can move to async mode
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if (this._mode === STORAGE_MODE_SYNC) {
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this._enterAsyncMode();
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}
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// Check in cache
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let cacheEntry = this._data.get(strPath);
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if (cacheEntry !== undefined) {
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if (cacheEntry.err) return nextTick(callback, cacheEntry.err);
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return nextTick(callback, null, cacheEntry.result);
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}
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// Check if there is already the same operation running
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let callbacks = this._activeAsyncOperations.get(strPath);
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if (callbacks !== undefined) {
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callbacks.push(callback);
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return;
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}
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this._activeAsyncOperations.set(strPath, (callbacks = [callback]));
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// Run the operation
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/** @type {Function} */
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(this._provider).call(
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this._providerContext,
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path,
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/**
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* @param {Error | null} err error
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* @param {any} [result] result
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*/
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(err, result) => {
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this._activeAsyncOperations.delete(strPath);
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this._storeResult(strPath, err, result);
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// Enter async mode if not yet done
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this._enterAsyncMode();
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runCallbacks(
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/** @type {FileSystemCallback<any>[]} */ (callbacks),
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err,
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result
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);
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}
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);
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}
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/**
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* @param {PathLike | PathOrFileDescriptor} path path
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* @param {any} options options
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* @returns {any} result
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*/
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provideSync(path, options) {
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if (
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typeof path !== "string" &&
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!Buffer.isBuffer(path) &&
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!(path instanceof URL) &&
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typeof path !== "number"
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) {
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throw new TypeError("path must be a string");
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}
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const strPath = typeof path !== "string" ? path.toString() : path;
|
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if (options) {
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return /** @type {Function} */ (this._syncProvider).call(
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this._providerContext,
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path,
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options
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);
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}
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// In sync mode we may have to decay some cache items
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if (this._mode === STORAGE_MODE_SYNC) {
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this._runDecays();
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}
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// Check in cache
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let cacheEntry = this._data.get(strPath);
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if (cacheEntry !== undefined) {
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if (cacheEntry.err) throw cacheEntry.err;
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return cacheEntry.result;
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}
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// Get all active async operations
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// This sync operation will also complete them
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const callbacks = this._activeAsyncOperations.get(strPath);
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this._activeAsyncOperations.delete(strPath);
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// Run the operation
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// When in idle mode, we will enter sync mode
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let result;
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try {
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result = /** @type {Function} */ (this._syncProvider).call(
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this._providerContext,
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path
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);
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} catch (err) {
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this._storeResult(strPath, /** @type {Error} */ (err), undefined);
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this._enterSyncModeWhenIdle();
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if (callbacks) {
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runCallbacks(callbacks, /** @type {Error} */ (err), undefined);
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}
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throw err;
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}
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this._storeResult(strPath, null, result);
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this._enterSyncModeWhenIdle();
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if (callbacks) {
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runCallbacks(callbacks, null, result);
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}
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return result;
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}
|
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|
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/**
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* @param {string | Buffer | URL | number | (string | URL | Buffer | number)[] | Set<string | URL | Buffer | number>} [what] what to purge
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*/
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purge(what) {
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if (!what) {
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if (this._mode !== STORAGE_MODE_IDLE) {
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this._data.clear();
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for (const level of this._levels) {
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level.clear();
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}
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this._enterIdleMode();
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}
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} else if (
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typeof what === "string" ||
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Buffer.isBuffer(what) ||
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what instanceof URL ||
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typeof what === "number"
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) {
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const strWhat = typeof what !== "string" ? what.toString() : what;
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for (let [key, data] of this._data) {
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if (key.startsWith(strWhat)) {
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this._data.delete(key);
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data.level.delete(key);
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}
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||||
}
|
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if (this._data.size === 0) {
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this._enterIdleMode();
|
||||
}
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} else {
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||||
for (let [key, data] of this._data) {
|
||||
for (const item of what) {
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const strItem = typeof item !== "string" ? item.toString() : item;
|
||||
if (key.startsWith(strItem)) {
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||||
this._data.delete(key);
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data.level.delete(key);
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||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (this._data.size === 0) {
|
||||
this._enterIdleMode();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string | Buffer | URL | number | (string | URL | Buffer | number)[] | Set<string | URL | Buffer | number>} [what] what to purge
|
||||
*/
|
||||
purgeParent(what) {
|
||||
if (!what) {
|
||||
this.purge();
|
||||
} else if (
|
||||
typeof what === "string" ||
|
||||
Buffer.isBuffer(what) ||
|
||||
what instanceof URL ||
|
||||
typeof what === "number"
|
||||
) {
|
||||
const strWhat = typeof what !== "string" ? what.toString() : what;
|
||||
this.purge(dirname(strWhat));
|
||||
} else {
|
||||
const set = new Set();
|
||||
for (const item of what) {
|
||||
const strItem = typeof item !== "string" ? item.toString() : item;
|
||||
set.add(dirname(strItem));
|
||||
}
|
||||
this.purge(set);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string} path path
|
||||
* @param {Error | null} err error
|
||||
* @param {any} result result
|
||||
*/
|
||||
_storeResult(path, err, result) {
|
||||
if (this._data.has(path)) return;
|
||||
const level = this._levels[this._currentLevel];
|
||||
this._data.set(path, { err, result, level });
|
||||
level.add(path);
|
||||
}
|
||||
|
||||
_decayLevel() {
|
||||
const nextLevel = (this._currentLevel + 1) % this._levels.length;
|
||||
const decay = this._levels[nextLevel];
|
||||
this._currentLevel = nextLevel;
|
||||
for (let item of decay) {
|
||||
this._data.delete(item);
|
||||
}
|
||||
decay.clear();
|
||||
if (this._data.size === 0) {
|
||||
this._enterIdleMode();
|
||||
} else {
|
||||
/** @type {number} */
|
||||
(this._nextDecay) += this._tickInterval;
|
||||
}
|
||||
}
|
||||
|
||||
_runDecays() {
|
||||
while (
|
||||
/** @type {number} */ (this._nextDecay) <= Date.now() &&
|
||||
this._mode !== STORAGE_MODE_IDLE
|
||||
) {
|
||||
this._decayLevel();
|
||||
}
|
||||
}
|
||||
|
||||
_enterAsyncMode() {
|
||||
let timeout = 0;
|
||||
switch (this._mode) {
|
||||
case STORAGE_MODE_ASYNC:
|
||||
return;
|
||||
case STORAGE_MODE_IDLE:
|
||||
this._nextDecay = Date.now() + this._tickInterval;
|
||||
timeout = this._tickInterval;
|
||||
break;
|
||||
case STORAGE_MODE_SYNC:
|
||||
this._runDecays();
|
||||
// _runDecays may change the mode
|
||||
if (
|
||||
/** @type {STORAGE_MODE_IDLE | STORAGE_MODE_SYNC | STORAGE_MODE_ASYNC}*/
|
||||
(this._mode) === STORAGE_MODE_IDLE
|
||||
)
|
||||
return;
|
||||
timeout = Math.max(
|
||||
0,
|
||||
/** @type {number} */ (this._nextDecay) - Date.now()
|
||||
);
|
||||
break;
|
||||
}
|
||||
this._mode = STORAGE_MODE_ASYNC;
|
||||
const ref = setTimeout(() => {
|
||||
this._mode = STORAGE_MODE_SYNC;
|
||||
this._runDecays();
|
||||
}, timeout);
|
||||
if (ref.unref) ref.unref();
|
||||
this._timeout = ref;
|
||||
}
|
||||
|
||||
_enterSyncModeWhenIdle() {
|
||||
if (this._mode === STORAGE_MODE_IDLE) {
|
||||
this._mode = STORAGE_MODE_SYNC;
|
||||
this._nextDecay = Date.now() + this._tickInterval;
|
||||
}
|
||||
}
|
||||
|
||||
_enterIdleMode() {
|
||||
this._mode = STORAGE_MODE_IDLE;
|
||||
this._nextDecay = undefined;
|
||||
if (this._timeout) clearTimeout(this._timeout);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @template {function} Provider
|
||||
* @template {function} AsyncProvider
|
||||
* @template FileSystem
|
||||
* @param {number} duration duration in ms files are cached
|
||||
* @param {Provider | undefined} provider provider
|
||||
* @param {AsyncProvider | undefined} syncProvider sync provider
|
||||
* @param {BaseFileSystem} providerContext provider context
|
||||
* @returns {OperationMergerBackend | CacheBackend} backend
|
||||
*/
|
||||
const createBackend = (duration, provider, syncProvider, providerContext) => {
|
||||
if (duration > 0) {
|
||||
return new CacheBackend(duration, provider, syncProvider, providerContext);
|
||||
}
|
||||
return new OperationMergerBackend(provider, syncProvider, providerContext);
|
||||
};
|
||||
|
||||
module.exports = class CachedInputFileSystem {
|
||||
/**
|
||||
* @param {BaseFileSystem} fileSystem file system
|
||||
* @param {number} duration duration in ms files are cached
|
||||
*/
|
||||
constructor(fileSystem, duration) {
|
||||
this.fileSystem = fileSystem;
|
||||
|
||||
this._lstatBackend = createBackend(
|
||||
duration,
|
||||
this.fileSystem.lstat,
|
||||
this.fileSystem.lstatSync,
|
||||
this.fileSystem
|
||||
);
|
||||
const lstat = this._lstatBackend.provide;
|
||||
this.lstat = /** @type {FileSystem["lstat"]} */ (lstat);
|
||||
const lstatSync = this._lstatBackend.provideSync;
|
||||
this.lstatSync = /** @type {SyncFileSystem["lstatSync"]} */ (lstatSync);
|
||||
|
||||
this._statBackend = createBackend(
|
||||
duration,
|
||||
this.fileSystem.stat,
|
||||
this.fileSystem.statSync,
|
||||
this.fileSystem
|
||||
);
|
||||
const stat = this._statBackend.provide;
|
||||
this.stat = /** @type {FileSystem["stat"]} */ (stat);
|
||||
const statSync = this._statBackend.provideSync;
|
||||
this.statSync = /** @type {SyncFileSystem["statSync"]} */ (statSync);
|
||||
|
||||
this._readdirBackend = createBackend(
|
||||
duration,
|
||||
this.fileSystem.readdir,
|
||||
this.fileSystem.readdirSync,
|
||||
this.fileSystem
|
||||
);
|
||||
const readdir = this._readdirBackend.provide;
|
||||
this.readdir = /** @type {FileSystem["readdir"]} */ (readdir);
|
||||
const readdirSync = this._readdirBackend.provideSync;
|
||||
this.readdirSync = /** @type {SyncFileSystem["readdirSync"]} */ (
|
||||
readdirSync
|
||||
);
|
||||
|
||||
this._readFileBackend = createBackend(
|
||||
duration,
|
||||
this.fileSystem.readFile,
|
||||
this.fileSystem.readFileSync,
|
||||
this.fileSystem
|
||||
);
|
||||
const readFile = this._readFileBackend.provide;
|
||||
this.readFile = /** @type {FileSystem["readFile"]} */ (readFile);
|
||||
const readFileSync = this._readFileBackend.provideSync;
|
||||
this.readFileSync = /** @type {SyncFileSystem["readFileSync"]} */ (
|
||||
readFileSync
|
||||
);
|
||||
|
||||
this._readJsonBackend = createBackend(
|
||||
duration,
|
||||
// prettier-ignore
|
||||
this.fileSystem.readJson ||
|
||||
(this.readFile &&
|
||||
(
|
||||
/**
|
||||
* @param {string} path path
|
||||
* @param {FileSystemCallback<any>} callback
|
||||
*/
|
||||
(path, callback) => {
|
||||
this.readFile(path, (err, buffer) => {
|
||||
if (err) return callback(err);
|
||||
if (!buffer || buffer.length === 0)
|
||||
return callback(new Error("No file content"));
|
||||
let data;
|
||||
try {
|
||||
data = JSON.parse(buffer.toString("utf-8"));
|
||||
} catch (e) {
|
||||
return callback(/** @type {Error} */ (e));
|
||||
}
|
||||
callback(null, data);
|
||||
});
|
||||
})
|
||||
),
|
||||
// prettier-ignore
|
||||
this.fileSystem.readJsonSync ||
|
||||
(this.readFileSync &&
|
||||
(
|
||||
/**
|
||||
* @param {string} path path
|
||||
* @returns {any} result
|
||||
*/
|
||||
(path) => {
|
||||
const buffer = this.readFileSync(path);
|
||||
const data = JSON.parse(buffer.toString("utf-8"));
|
||||
return data;
|
||||
}
|
||||
)),
|
||||
this.fileSystem
|
||||
);
|
||||
const readJson = this._readJsonBackend.provide;
|
||||
this.readJson = /** @type {FileSystem["readJson"]} */ (readJson);
|
||||
const readJsonSync = this._readJsonBackend.provideSync;
|
||||
this.readJsonSync = /** @type {SyncFileSystem["readJsonSync"]} */ (
|
||||
readJsonSync
|
||||
);
|
||||
|
||||
this._readlinkBackend = createBackend(
|
||||
duration,
|
||||
this.fileSystem.readlink,
|
||||
this.fileSystem.readlinkSync,
|
||||
this.fileSystem
|
||||
);
|
||||
const readlink = this._readlinkBackend.provide;
|
||||
this.readlink = /** @type {FileSystem["readlink"]} */ (readlink);
|
||||
const readlinkSync = this._readlinkBackend.provideSync;
|
||||
this.readlinkSync = /** @type {SyncFileSystem["readlinkSync"]} */ (
|
||||
readlinkSync
|
||||
);
|
||||
|
||||
this._realpathBackend = createBackend(
|
||||
duration,
|
||||
this.fileSystem.realpath,
|
||||
this.fileSystem.realpathSync,
|
||||
this.fileSystem
|
||||
);
|
||||
const realpath = this._realpathBackend.provide;
|
||||
this.realpath = /** @type {FileSystem["realpath"]} */ (realpath);
|
||||
const realpathSync = this._realpathBackend.provideSync;
|
||||
this.realpathSync = /** @type {SyncFileSystem["realpathSync"]} */ (
|
||||
realpathSync
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param {string | Buffer | URL | number | (string | URL | Buffer | number)[] | Set<string | URL | Buffer | number>} [what] what to purge
|
||||
*/
|
||||
purge(what) {
|
||||
this._statBackend.purge(what);
|
||||
this._lstatBackend.purge(what);
|
||||
this._readdirBackend.purgeParent(what);
|
||||
this._readFileBackend.purge(what);
|
||||
this._readlinkBackend.purge(what);
|
||||
this._readJsonBackend.purge(what);
|
||||
this._realpathBackend.purge(what);
|
||||
}
|
||||
};
|
||||
Reference in New Issue
Block a user