jointjs
Version:
JavaScript diagramming library
1,682 lines (1,599 loc) • 81.5 kB
JavaScript
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const { create: createResolver } = require("enhanced-resolve");
const asyncLib = require("neo-async");
const AsyncQueue = require("./util/AsyncQueue");
const createHash = require("./util/createHash");
const { join, dirname, relative } = require("./util/fs");
const makeSerializable = require("./util/makeSerializable");
const processAsyncTree = require("./util/processAsyncTree");
/** @typedef {import("./WebpackError")} WebpackError */
/** @typedef {import("./logging/Logger").Logger} Logger */
/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
const supportsEsm = +process.versions.modules >= 83;
let FS_ACCURACY = 2000;
const EMPTY_SET = new Set();
const RBDT_RESOLVE_CJS = 0;
const RBDT_RESOLVE_ESM = 1;
const RBDT_RESOLVE_DIRECTORY = 2;
const RBDT_RESOLVE_CJS_FILE = 3;
const RBDT_RESOLVE_ESM_FILE = 4;
const RBDT_DIRECTORY = 5;
const RBDT_FILE = 6;
const RBDT_DIRECTORY_DEPENDENCIES = 7;
const RBDT_FILE_DEPENDENCIES = 8;
const INVALID = Symbol("invalid");
/**
* @typedef {Object} FileSystemInfoEntry
* @property {number} safeTime
* @property {number=} timestamp
* @property {string=} timestampHash
*/
/**
* @typedef {Object} TimestampAndHash
* @property {number} safeTime
* @property {number=} timestamp
* @property {string=} timestampHash
* @property {string} hash
*/
/**
* @typedef {Object} SnapshotOptimizationEntry
* @property {Snapshot} snapshot
* @property {number} shared
* @property {Set<string>} snapshotContent
* @property {Set<SnapshotOptimizationEntry>} children
*/
/**
* @typedef {Object} ResolveBuildDependenciesResult
* @property {Set<string>} files list of files
* @property {Set<string>} directories list of directories
* @property {Set<string>} missing list of missing entries
* @property {Map<string, string>} resolveResults stored resolve results
* @property {Object} resolveDependencies dependencies of the resolving
* @property {Set<string>} resolveDependencies.files list of files
* @property {Set<string>} resolveDependencies.directories list of directories
* @property {Set<string>} resolveDependencies.missing list of missing entries
*/
const DONE_ITERATOR_RESULT = new Set().keys().next();
// cspell:word tshs
// Tsh = Timestamp + Hash
// Tshs = Timestamp + Hash combinations
class Snapshot {
constructor() {
this._flags = 0;
/** @type {number | undefined} */
this.startTime = undefined;
/** @type {Map<string, FileSystemInfoEntry> | undefined} */
this.fileTimestamps = undefined;
/** @type {Map<string, string> | undefined} */
this.fileHashes = undefined;
/** @type {Map<string, TimestampAndHash | string> | undefined} */
this.fileTshs = undefined;
/** @type {Map<string, FileSystemInfoEntry> | undefined} */
this.contextTimestamps = undefined;
/** @type {Map<string, string> | undefined} */
this.contextHashes = undefined;
/** @type {Map<string, TimestampAndHash | string> | undefined} */
this.contextTshs = undefined;
/** @type {Map<string, boolean> | undefined} */
this.missingExistence = undefined;
/** @type {Map<string, string> | undefined} */
this.managedItemInfo = undefined;
/** @type {Set<string> | undefined} */
this.managedFiles = undefined;
/** @type {Set<string> | undefined} */
this.managedContexts = undefined;
/** @type {Set<string> | undefined} */
this.managedMissing = undefined;
/** @type {Set<Snapshot> | undefined} */
this.children = undefined;
}
hasStartTime() {
return (this._flags & 1) !== 0;
}
setStartTime(value) {
this._flags = this._flags | 1;
this.startTime = value;
}
setMergedStartTime(value, snapshot) {
if (value) {
if (snapshot.hasStartTime()) {
this.setStartTime(Math.min(value, snapshot.startTime));
} else {
this.setStartTime(value);
}
} else {
if (snapshot.hasStartTime()) this.setStartTime(snapshot.startTime);
}
}
hasFileTimestamps() {
return (this._flags & 2) !== 0;
}
setFileTimestamps(value) {
this._flags = this._flags | 2;
this.fileTimestamps = value;
}
hasFileHashes() {
return (this._flags & 4) !== 0;
}
setFileHashes(value) {
this._flags = this._flags | 4;
this.fileHashes = value;
}
hasFileTshs() {
return (this._flags & 8) !== 0;
}
setFileTshs(value) {
this._flags = this._flags | 8;
this.fileTshs = value;
}
hasContextTimestamps() {
return (this._flags & 0x10) !== 0;
}
setContextTimestamps(value) {
this._flags = this._flags | 0x10;
this.contextTimestamps = value;
}
hasContextHashes() {
return (this._flags & 0x20) !== 0;
}
setContextHashes(value) {
this._flags = this._flags | 0x20;
this.contextHashes = value;
}
hasContextTshs() {
return (this._flags & 0x40) !== 0;
}
setContextTshs(value) {
this._flags = this._flags | 0x40;
this.contextTshs = value;
}
hasMissingExistence() {
return (this._flags & 0x80) !== 0;
}
setMissingExistence(value) {
this._flags = this._flags | 0x80;
this.missingExistence = value;
}
hasManagedItemInfo() {
return (this._flags & 0x100) !== 0;
}
setManagedItemInfo(value) {
this._flags = this._flags | 0x100;
this.managedItemInfo = value;
}
hasManagedFiles() {
return (this._flags & 0x200) !== 0;
}
setManagedFiles(value) {
this._flags = this._flags | 0x200;
this.managedFiles = value;
}
hasManagedContexts() {
return (this._flags & 0x400) !== 0;
}
setManagedContexts(value) {
this._flags = this._flags | 0x400;
this.managedContexts = value;
}
hasManagedMissing() {
return (this._flags & 0x800) !== 0;
}
setManagedMissing(value) {
this._flags = this._flags | 0x800;
this.managedMissing = value;
}
hasChildren() {
return (this._flags & 0x1000) !== 0;
}
setChildren(value) {
this._flags = this._flags | 0x1000;
this.children = value;
}
addChild(child) {
if (!this.hasChildren()) {
this.setChildren(new Set());
}
this.children.add(child);
}
serialize({ write }) {
write(this._flags);
if (this.hasStartTime()) write(this.startTime);
if (this.hasFileTimestamps()) write(this.fileTimestamps);
if (this.hasFileHashes()) write(this.fileHashes);
if (this.hasFileTshs()) write(this.fileTshs);
if (this.hasContextTimestamps()) write(this.contextTimestamps);
if (this.hasContextHashes()) write(this.contextHashes);
if (this.hasContextTshs()) write(this.contextTshs);
if (this.hasMissingExistence()) write(this.missingExistence);
if (this.hasManagedItemInfo()) write(this.managedItemInfo);
if (this.hasManagedFiles()) write(this.managedFiles);
if (this.hasManagedContexts()) write(this.managedContexts);
if (this.hasManagedMissing()) write(this.managedMissing);
if (this.hasChildren()) write(this.children);
}
deserialize({ read }) {
this._flags = read();
if (this.hasStartTime()) this.startTime = read();
if (this.hasFileTimestamps()) this.fileTimestamps = read();
if (this.hasFileHashes()) this.fileHashes = read();
if (this.hasFileTshs()) this.fileTshs = read();
if (this.hasContextTimestamps()) this.contextTimestamps = read();
if (this.hasContextHashes()) this.contextHashes = read();
if (this.hasContextTshs()) this.contextTshs = read();
if (this.hasMissingExistence()) this.missingExistence = read();
if (this.hasManagedItemInfo()) this.managedItemInfo = read();
if (this.hasManagedFiles()) this.managedFiles = read();
if (this.hasManagedContexts()) this.managedContexts = read();
if (this.hasManagedMissing()) this.managedMissing = read();
if (this.hasChildren()) this.children = read();
}
/**
* @param {function(Snapshot): (Map<string, any> | Set<string>)[]} getMaps first
* @returns {Iterable<string>} iterable
*/
_createIterable(getMaps) {
let snapshot = this;
return {
[Symbol.iterator]() {
let state = 0;
/** @type {IterableIterator<string>} */
let it;
let maps = getMaps(snapshot);
const queue = [];
return {
next() {
for (;;) {
switch (state) {
case 0:
if (maps.length > 0) {
const map = maps.pop();
if (map !== undefined) {
it = map.keys();
state = 1;
} else {
break;
}
} else {
state = 2;
break;
}
/* falls through */
case 1: {
const result = it.next();
if (!result.done) return result;
state = 0;
break;
}
case 2: {
const children = snapshot.children;
if (children !== undefined) {
for (const child of children) {
queue.push(child);
}
}
if (queue.length > 0) {
snapshot = queue.pop();
maps = getMaps(snapshot);
state = 0;
break;
} else {
state = 3;
}
}
/* falls through */
case 3:
return DONE_ITERATOR_RESULT;
}
}
}
};
}
};
}
/**
* @returns {Iterable<string>} iterable
*/
getFileIterable() {
return this._createIterable(s => [
s.fileTimestamps,
s.fileHashes,
s.fileTshs,
s.managedFiles
]);
}
/**
* @returns {Iterable<string>} iterable
*/
getContextIterable() {
return this._createIterable(s => [
s.contextTimestamps,
s.contextHashes,
s.contextTshs,
s.managedContexts
]);
}
/**
* @returns {Iterable<string>} iterable
*/
getMissingIterable() {
return this._createIterable(s => [s.missingExistence, s.managedMissing]);
}
}
makeSerializable(Snapshot, "webpack/lib/FileSystemInfo", "Snapshot");
const MIN_COMMON_SNAPSHOT_SIZE = 3;
/**
* @template T
*/
class SnapshotOptimization {
/**
* @param {function(Snapshot): boolean} has has value
* @param {function(Snapshot): Map<string, T> | Set<string>} get get value
* @param {function(Snapshot, Map<string, T> | Set<string>): void} set set value
* @param {boolean=} isSet value is an Set instead of a Map
*/
constructor(has, get, set, isSet = false) {
this._has = has;
this._get = get;
this._set = set;
this._isSet = isSet;
/** @type {Map<string, SnapshotOptimizationEntry>} */
this._map = new Map();
this._statItemsShared = 0;
this._statItemsUnshared = 0;
this._statSharedSnapshots = 0;
this._statReusedSharedSnapshots = 0;
}
getStatisticMessage() {
const total = this._statItemsShared + this._statItemsUnshared;
if (total === 0) return undefined;
return `${
this._statItemsShared && Math.round((this._statItemsShared * 100) / total)
}% (${this._statItemsShared}/${total}) entries shared via ${
this._statSharedSnapshots
} shared snapshots (${
this._statReusedSharedSnapshots + this._statSharedSnapshots
} times referenced)`;
}
storeUnsharedSnapshot(snapshot, locations) {
if (locations === undefined) return;
const optimizationEntry = {
snapshot,
shared: 0,
snapshotContent: undefined,
children: undefined
};
for (const path of locations) {
this._map.set(path, optimizationEntry);
}
}
optimize(capturedFiles, startTime, children) {
/** @type {Set<string>} */
const unsetOptimizationEntries = new Set();
/** @type {Set<SnapshotOptimizationEntry>} */
const checkedOptimizationEntries = new Set();
/**
* @param {SnapshotOptimizationEntry} entry optimization entry
* @returns {void}
*/
const increaseSharedAndStoreOptimizationEntry = entry => {
if (entry.children !== undefined) {
entry.children.forEach(increaseSharedAndStoreOptimizationEntry);
}
entry.shared++;
storeOptimizationEntry(entry);
};
/**
* @param {SnapshotOptimizationEntry} entry optimization entry
* @returns {void}
*/
const storeOptimizationEntry = entry => {
for (const path of entry.snapshotContent) {
const old = this._map.get(path);
if (old.shared < entry.shared) {
this._map.set(path, entry);
}
capturedFiles.delete(path);
}
};
const capturedFilesSize = capturedFiles.size;
capturedFiles: for (const path of capturedFiles) {
const optimizationEntry = this._map.get(path);
if (optimizationEntry === undefined) {
unsetOptimizationEntries.add(path);
continue;
}
if (checkedOptimizationEntries.has(optimizationEntry)) continue;
const snapshot = optimizationEntry.snapshot;
if (optimizationEntry.shared > 0) {
// It's a shared snapshot
// We can't change it, so we can only use it when all files match
// and startTime is compatible
if (
startTime &&
(!snapshot.startTime || snapshot.startTime > startTime)
) {
continue;
}
const nonSharedFiles = new Set();
const snapshotContent = optimizationEntry.snapshotContent;
const snapshotEntries = this._get(snapshot);
for (const path of snapshotContent) {
if (!capturedFiles.has(path)) {
if (!snapshotEntries.has(path)) {
// File is not shared and can't be removed from the snapshot
// because it's in a child of the snapshot
checkedOptimizationEntries.add(optimizationEntry);
continue capturedFiles;
}
nonSharedFiles.add(path);
continue;
}
}
if (nonSharedFiles.size === 0) {
// The complete snapshot is shared
// add it as child
children.add(snapshot);
increaseSharedAndStoreOptimizationEntry(optimizationEntry);
this._statReusedSharedSnapshots++;
} else {
// Only a part of the snapshot is shared
const sharedCount = snapshotContent.size - nonSharedFiles.size;
if (sharedCount < MIN_COMMON_SNAPSHOT_SIZE) {
// Common part it too small
checkedOptimizationEntries.add(optimizationEntry);
continue capturedFiles;
}
// Extract common timestamps from both snapshots
let commonMap;
if (this._isSet) {
commonMap = new Set();
for (const path of /** @type {Set<string>} */ (snapshotEntries)) {
if (nonSharedFiles.has(path)) continue;
commonMap.add(path);
snapshotEntries.delete(path);
}
} else {
commonMap = new Map();
const map = /** @type {Map<string, T>} */ (snapshotEntries);
for (const [path, value] of map) {
if (nonSharedFiles.has(path)) continue;
commonMap.set(path, value);
snapshotEntries.delete(path);
}
}
// Create and attach snapshot
const commonSnapshot = new Snapshot();
commonSnapshot.setMergedStartTime(startTime, snapshot);
this._set(commonSnapshot, commonMap);
children.add(commonSnapshot);
snapshot.addChild(commonSnapshot);
// Create optimization entry
const newEntry = {
snapshot: commonSnapshot,
shared: optimizationEntry.shared + 1,
snapshotContent: new Set(commonMap.keys()),
children: undefined
};
if (optimizationEntry.children === undefined)
optimizationEntry.children = new Set();
optimizationEntry.children.add(newEntry);
storeOptimizationEntry(newEntry);
this._statSharedSnapshots++;
}
} else {
// It's a unshared snapshot
// We can extract a common shared snapshot
// with all common files
const snapshotEntries = this._get(snapshot);
let commonMap;
if (this._isSet) {
commonMap = new Set();
const set = /** @type {Set<string>} */ (snapshotEntries);
if (capturedFiles.size < set.size) {
for (const path of capturedFiles) {
if (set.has(path)) commonMap.add(path);
}
} else {
for (const path of set) {
if (capturedFiles.has(path)) commonMap.add(path);
}
}
} else {
commonMap = new Map();
const map = /** @type {Map<string, T>} */ (snapshotEntries);
for (const path of capturedFiles) {
const ts = map.get(path);
if (ts === undefined) continue;
commonMap.set(path, ts);
}
}
if (commonMap.size < MIN_COMMON_SNAPSHOT_SIZE) {
// Common part it too small
checkedOptimizationEntries.add(optimizationEntry);
continue capturedFiles;
}
// Create and attach snapshot
const commonSnapshot = new Snapshot();
commonSnapshot.setMergedStartTime(startTime, snapshot);
this._set(commonSnapshot, commonMap);
children.add(commonSnapshot);
snapshot.addChild(commonSnapshot);
// Remove files from snapshot
for (const path of commonMap.keys()) snapshotEntries.delete(path);
const sharedCount = commonMap.size;
this._statItemsUnshared -= sharedCount;
this._statItemsShared += sharedCount;
// Create optimization entry
storeOptimizationEntry({
snapshot: commonSnapshot,
shared: 2,
snapshotContent: new Set(commonMap.keys()),
children: undefined
});
this._statSharedSnapshots++;
}
checkedOptimizationEntries.add(optimizationEntry);
}
const unshared = capturedFiles.size;
this._statItemsUnshared += unshared;
this._statItemsShared += capturedFilesSize - unshared;
return unsetOptimizationEntries;
}
}
/* istanbul ignore next */
/**
* @param {number} mtime mtime
*/
const applyMtime = mtime => {
if (FS_ACCURACY > 1 && mtime % 2 !== 0) FS_ACCURACY = 1;
else if (FS_ACCURACY > 10 && mtime % 20 !== 0) FS_ACCURACY = 10;
else if (FS_ACCURACY > 100 && mtime % 200 !== 0) FS_ACCURACY = 100;
else if (FS_ACCURACY > 1000 && mtime % 2000 !== 0) FS_ACCURACY = 1000;
};
/**
* @template T
* @template K
* @param {Map<T, K>} a source map
* @param {Map<T, K>} b joining map
* @returns {Map<T, K>} joined map
*/
const mergeMaps = (a, b) => {
if (!b || b.size === 0) return a;
if (!a || a.size === 0) return b;
const map = new Map(a);
for (const [key, value] of b) {
map.set(key, value);
}
return map;
};
/**
* @template T
* @template K
* @param {Set<T, K>} a source map
* @param {Set<T, K>} b joining map
* @returns {Set<T, K>} joined map
*/
const mergeSets = (a, b) => {
if (!b || b.size === 0) return a;
if (!a || a.size === 0) return b;
const map = new Set(a);
for (const item of b) {
map.add(item);
}
return map;
};
/**
* Finding file or directory to manage
* @param {string} managedPath path that is managing by {@link FileSystemInfo}
* @param {string} path path to file or directory
* @returns {string|null} managed item
* @example
* getManagedItem(
* '/Users/user/my-project/node_modules/',
* '/Users/user/my-project/node_modules/package/index.js'
* ) === '/Users/user/my-project/node_modules/package'
* getManagedItem(
* '/Users/user/my-project/node_modules/',
* '/Users/user/my-project/node_modules/package1/node_modules/package2'
* ) === '/Users/user/my-project/node_modules/package1/node_modules/package2'
* getManagedItem(
* '/Users/user/my-project/node_modules/',
* '/Users/user/my-project/node_modules/.bin/script.js'
* ) === null // hidden files are disallowed as managed items
* getManagedItem(
* '/Users/user/my-project/node_modules/',
* '/Users/user/my-project/node_modules/package'
* ) === '/Users/user/my-project/node_modules/package'
*/
const getManagedItem = (managedPath, path) => {
let i = managedPath.length;
let slashes = 1;
let startingPosition = true;
loop: while (i < path.length) {
switch (path.charCodeAt(i)) {
case 47: // slash
case 92: // backslash
if (--slashes === 0) break loop;
startingPosition = true;
break;
case 46: // .
// hidden files are disallowed as managed items
// it's probably .yarn-integrity or .cache
if (startingPosition) return null;
break;
case 64: // @
if (!startingPosition) return null;
slashes++;
break;
default:
startingPosition = false;
break;
}
i++;
}
if (i === path.length) slashes--;
// return null when path is incomplete
if (slashes !== 0) return null;
// if (path.slice(i + 1, i + 13) === "node_modules")
if (
path.length >= i + 13 &&
path.charCodeAt(i + 1) === 110 &&
path.charCodeAt(i + 2) === 111 &&
path.charCodeAt(i + 3) === 100 &&
path.charCodeAt(i + 4) === 101 &&
path.charCodeAt(i + 5) === 95 &&
path.charCodeAt(i + 6) === 109 &&
path.charCodeAt(i + 7) === 111 &&
path.charCodeAt(i + 8) === 100 &&
path.charCodeAt(i + 9) === 117 &&
path.charCodeAt(i + 10) === 108 &&
path.charCodeAt(i + 11) === 101 &&
path.charCodeAt(i + 12) === 115
) {
// if this is the end of the path
if (path.length === i + 13) {
// return the node_modules directory
// it's special
return path;
}
const c = path.charCodeAt(i + 13);
// if next symbol is slash or backslash
if (c === 47 || c === 92) {
// Managed subpath
return getManagedItem(path.slice(0, i + 14), path);
}
}
return path.slice(0, i);
};
/**
* @param {FileSystemInfoEntry} entry file system info entry
* @returns {boolean} existence flag
*/
const toExistence = entry => {
return Boolean(entry);
};
/**
* Used to access information about the filesystem in a cached way
*/
class FileSystemInfo {
/**
* @param {InputFileSystem} fs file system
* @param {Object} options options
* @param {Iterable<string>=} options.managedPaths paths that are only managed by a package manager
* @param {Iterable<string>=} options.immutablePaths paths that are immutable
* @param {Logger=} options.logger logger used to log invalid snapshots
*/
constructor(fs, { managedPaths = [], immutablePaths = [], logger } = {}) {
this.fs = fs;
this.logger = logger;
this._remainingLogs = logger ? 40 : 0;
this._loggedPaths = logger ? new Set() : undefined;
/** @type {WeakMap<Snapshot, boolean | (function(WebpackError=, boolean=): void)[]>} */
this._snapshotCache = new WeakMap();
this._fileTimestampsOptimization = new SnapshotOptimization(
s => s.hasFileTimestamps(),
s => s.fileTimestamps,
(s, v) => s.setFileTimestamps(v)
);
this._fileHashesOptimization = new SnapshotOptimization(
s => s.hasFileHashes(),
s => s.fileHashes,
(s, v) => s.setFileHashes(v)
);
this._fileTshsOptimization = new SnapshotOptimization(
s => s.hasFileTshs(),
s => s.fileTshs,
(s, v) => s.setFileTshs(v)
);
this._contextTimestampsOptimization = new SnapshotOptimization(
s => s.hasContextTimestamps(),
s => s.contextTimestamps,
(s, v) => s.setContextTimestamps(v)
);
this._contextHashesOptimization = new SnapshotOptimization(
s => s.hasContextHashes(),
s => s.contextHashes,
(s, v) => s.setContextHashes(v)
);
this._contextTshsOptimization = new SnapshotOptimization(
s => s.hasContextTshs(),
s => s.contextTshs,
(s, v) => s.setContextTshs(v)
);
this._missingExistenceOptimization = new SnapshotOptimization(
s => s.hasMissingExistence(),
s => s.missingExistence,
(s, v) => s.setMissingExistence(v)
);
this._managedItemInfoOptimization = new SnapshotOptimization(
s => s.hasManagedItemInfo(),
s => s.managedItemInfo,
(s, v) => s.setManagedItemInfo(v)
);
this._managedFilesOptimization = new SnapshotOptimization(
s => s.hasManagedFiles(),
s => s.managedFiles,
(s, v) => s.setManagedFiles(v),
true
);
this._managedContextsOptimization = new SnapshotOptimization(
s => s.hasManagedContexts(),
s => s.managedContexts,
(s, v) => s.setManagedContexts(v),
true
);
this._managedMissingOptimization = new SnapshotOptimization(
s => s.hasManagedMissing(),
s => s.managedMissing,
(s, v) => s.setManagedMissing(v),
true
);
/** @type {Map<string, FileSystemInfoEntry | "ignore" | null>} */
this._fileTimestamps = new Map();
/** @type {Map<string, string>} */
this._fileHashes = new Map();
/** @type {Map<string, TimestampAndHash | string>} */
this._fileTshs = new Map();
/** @type {Map<string, FileSystemInfoEntry | "ignore" | null>} */
this._contextTimestamps = new Map();
/** @type {Map<string, string>} */
this._contextHashes = new Map();
/** @type {Map<string, TimestampAndHash | string>} */
this._contextTshs = new Map();
/** @type {Map<string, string>} */
this._managedItems = new Map();
/** @type {AsyncQueue<string, string, FileSystemInfoEntry | null>} */
this.fileTimestampQueue = new AsyncQueue({
name: "file timestamp",
parallelism: 30,
processor: this._readFileTimestamp.bind(this)
});
/** @type {AsyncQueue<string, string, string | null>} */
this.fileHashQueue = new AsyncQueue({
name: "file hash",
parallelism: 10,
processor: this._readFileHash.bind(this)
});
/** @type {AsyncQueue<string, string, FileSystemInfoEntry | null>} */
this.contextTimestampQueue = new AsyncQueue({
name: "context timestamp",
parallelism: 2,
processor: this._readContextTimestamp.bind(this)
});
/** @type {AsyncQueue<string, string, string | null>} */
this.contextHashQueue = new AsyncQueue({
name: "context hash",
parallelism: 2,
processor: this._readContextHash.bind(this)
});
/** @type {AsyncQueue<string, string, string | null>} */
this.managedItemQueue = new AsyncQueue({
name: "managed item info",
parallelism: 10,
processor: this._getManagedItemInfo.bind(this)
});
/** @type {AsyncQueue<string, string, Set<string>>} */
this.managedItemDirectoryQueue = new AsyncQueue({
name: "managed item directory info",
parallelism: 10,
processor: this._getManagedItemDirectoryInfo.bind(this)
});
this.managedPaths = Array.from(managedPaths);
this.managedPathsWithSlash = this.managedPaths.map(p =>
join(fs, p, "_").slice(0, -1)
);
this.immutablePaths = Array.from(immutablePaths);
this.immutablePathsWithSlash = this.immutablePaths.map(p =>
join(fs, p, "_").slice(0, -1)
);
this._cachedDeprecatedFileTimestamps = undefined;
this._cachedDeprecatedContextTimestamps = undefined;
this._warnAboutExperimentalEsmTracking = false;
this._statCreatedSnapshots = 0;
this._statTestedSnapshotsCached = 0;
this._statTestedSnapshotsNotCached = 0;
this._statTestedChildrenCached = 0;
this._statTestedChildrenNotCached = 0;
this._statTestedEntries = 0;
}
logStatistics() {
const logWhenMessage = (header, message) => {
if (message) {
this.logger.log(`${header}: ${message}`);
}
};
this.logger.log(`${this._statCreatedSnapshots} new snapshots created`);
this.logger.log(
`${
this._statTestedSnapshotsNotCached &&
Math.round(
(this._statTestedSnapshotsNotCached * 100) /
(this._statTestedSnapshotsCached +
this._statTestedSnapshotsNotCached)
)
}% root snapshot uncached (${this._statTestedSnapshotsNotCached} / ${
this._statTestedSnapshotsCached + this._statTestedSnapshotsNotCached
})`
);
this.logger.log(
`${
this._statTestedChildrenNotCached &&
Math.round(
(this._statTestedChildrenNotCached * 100) /
(this._statTestedChildrenCached + this._statTestedChildrenNotCached)
)
}% children snapshot uncached (${this._statTestedChildrenNotCached} / ${
this._statTestedChildrenCached + this._statTestedChildrenNotCached
})`
);
this.logger.log(`${this._statTestedEntries} entries tested`);
this.logger.log(
`File info in cache: ${this._fileTimestamps.size} timestamps ${this._fileHashes.size} hashes ${this._fileTshs.size} timestamp hash combinations`
);
logWhenMessage(
`File timestamp snapshot optimization`,
this._fileTimestampsOptimization.getStatisticMessage()
);
logWhenMessage(
`File hash snapshot optimization`,
this._fileHashesOptimization.getStatisticMessage()
);
logWhenMessage(
`File timestamp hash combination snapshot optimization`,
this._fileTshsOptimization.getStatisticMessage()
);
this.logger.log(
`Directory info in cache: ${this._contextTimestamps.size} timestamps ${this._contextHashes.size} hashes ${this._contextTshs.size} timestamp hash combinations`
);
logWhenMessage(
`Directory timestamp snapshot optimization`,
this._contextTimestampsOptimization.getStatisticMessage()
);
logWhenMessage(
`Directory hash snapshot optimization`,
this._contextHashesOptimization.getStatisticMessage()
);
logWhenMessage(
`Directory timestamp hash combination snapshot optimization`,
this._contextTshsOptimization.getStatisticMessage()
);
logWhenMessage(
`Missing items snapshot optimization`,
this._missingExistenceOptimization.getStatisticMessage()
);
this.logger.log(
`Managed items info in cache: ${this._managedItems.size} items`
);
logWhenMessage(
`Managed items snapshot optimization`,
this._managedItemInfoOptimization.getStatisticMessage()
);
logWhenMessage(
`Managed files snapshot optimization`,
this._managedFilesOptimization.getStatisticMessage()
);
logWhenMessage(
`Managed contexts snapshot optimization`,
this._managedContextsOptimization.getStatisticMessage()
);
logWhenMessage(
`Managed missing snapshot optimization`,
this._managedMissingOptimization.getStatisticMessage()
);
}
_log(path, reason, ...args) {
const key = path + reason;
if (this._loggedPaths.has(key)) return;
this._loggedPaths.add(key);
this.logger.debug(`${path} invalidated because ${reason}`, ...args);
if (--this._remainingLogs === 0) {
this.logger.debug(
"Logging limit has been reached and no further logging will be emitted by FileSystemInfo"
);
}
}
/**
* @param {Map<string, FileSystemInfoEntry | "ignore" | null>} map timestamps
* @returns {void}
*/
addFileTimestamps(map) {
for (const [path, ts] of map) {
this._fileTimestamps.set(path, ts);
}
this._cachedDeprecatedFileTimestamps = undefined;
}
/**
* @param {Map<string, FileSystemInfoEntry | "ignore" | null>} map timestamps
* @returns {void}
*/
addContextTimestamps(map) {
for (const [path, ts] of map) {
this._contextTimestamps.set(path, ts);
}
this._cachedDeprecatedContextTimestamps = undefined;
}
/**
* @param {string} path file path
* @param {function(WebpackError=, (FileSystemInfoEntry | "ignore" | null)=): void} callback callback function
* @returns {void}
*/
getFileTimestamp(path, callback) {
const cache = this._fileTimestamps.get(path);
if (cache !== undefined) return callback(null, cache);
this.fileTimestampQueue.add(path, callback);
}
/**
* @param {string} path context path
* @param {function(WebpackError=, (FileSystemInfoEntry | "ignore" | null)=): void} callback callback function
* @returns {void}
*/
getContextTimestamp(path, callback) {
const cache = this._contextTimestamps.get(path);
if (cache !== undefined) return callback(null, cache);
this.contextTimestampQueue.add(path, callback);
}
/**
* @param {string} path file path
* @param {function(WebpackError=, string=): void} callback callback function
* @returns {void}
*/
getFileHash(path, callback) {
const cache = this._fileHashes.get(path);
if (cache !== undefined) return callback(null, cache);
this.fileHashQueue.add(path, callback);
}
/**
* @param {string} path context path
* @param {function(WebpackError=, string=): void} callback callback function
* @returns {void}
*/
getContextHash(path, callback) {
const cache = this._contextHashes.get(path);
if (cache !== undefined) return callback(null, cache);
this.contextHashQueue.add(path, callback);
}
_createBuildDependenciesResolvers() {
const resolveContext = createResolver({
resolveToContext: true,
exportsFields: [],
fileSystem: this.fs
});
const resolveCjs = createResolver({
extensions: [".js", ".json", ".node"],
conditionNames: ["require", "node"],
fileSystem: this.fs
});
const resolveEsm = createResolver({
extensions: [".js", ".json", ".node"],
fullySpecified: true,
conditionNames: ["import", "node"],
fileSystem: this.fs
});
return { resolveContext, resolveEsm, resolveCjs };
}
/**
* @param {string} context context directory
* @param {Iterable<string>} deps dependencies
* @param {function(Error=, ResolveBuildDependenciesResult=): void} callback callback function
* @returns {void}
*/
resolveBuildDependencies(context, deps, callback) {
const {
resolveContext,
resolveEsm,
resolveCjs
} = this._createBuildDependenciesResolvers();
/** @type {Set<string>} */
const files = new Set();
/** @type {Set<string>} */
const fileSymlinks = new Set();
/** @type {Set<string>} */
const directories = new Set();
/** @type {Set<string>} */
const directorySymlinks = new Set();
/** @type {Set<string>} */
const missing = new Set();
/** @type {Set<string>} */
const resolveFiles = new Set();
/** @type {Set<string>} */
const resolveDirectories = new Set();
/** @type {Set<string>} */
const resolveMissing = new Set();
/** @type {Map<string, string>} */
const resolveResults = new Map();
const invalidResolveResults = new Set();
const resolverContext = {
fileDependencies: resolveFiles,
contextDependencies: resolveDirectories,
missingDependencies: resolveMissing
};
processAsyncTree(
Array.from(deps, dep => ({
type: RBDT_RESOLVE_CJS,
context,
path: dep,
expected: undefined
})),
20,
({ type, context, path, expected }, push, callback) => {
const resolveDirectory = path => {
const key = `d\n${context}\n${path}`;
if (resolveResults.has(key)) {
return callback();
}
resolveResults.set(key, undefined);
resolveContext(context, path, resolverContext, (err, result) => {
if (err) {
invalidResolveResults.add(key);
if (
err.code === "ENOENT" ||
err.code === "UNDECLARED_DEPENDENCY"
) {
return callback();
}
err.message += `\nwhile resolving '${path}' in ${context} to a directory`;
return callback(err);
}
resolveResults.set(key, result);
push({
type: RBDT_DIRECTORY,
context: undefined,
path: result,
expected: undefined
});
callback();
});
};
const resolveFile = (path, symbol, resolve) => {
const key = `${symbol}\n${context}\n${path}`;
if (resolveResults.has(key)) {
return callback();
}
resolveResults.set(key, undefined);
resolve(context, path, resolverContext, (err, result) => {
if (expected) {
if (result === expected) {
resolveResults.set(key, result);
} else {
invalidResolveResults.add(key);
this.logger.debug(
`Resolving '${path}' in ${context} for build dependencies doesn't lead to expected result '${expected}', but to '${result}' instead. Resolving dependencies are ignored for this path.`
);
}
} else {
if (err) {
invalidResolveResults.add(key);
if (
err.code === "ENOENT" ||
err.code === "UNDECLARED_DEPENDENCY"
) {
return callback();
}
err.message += `\nwhile resolving '${path}' in ${context} as file`;
return callback(err);
}
resolveResults.set(key, result);
push({
type: RBDT_FILE,
context: undefined,
path: result,
expected: undefined
});
}
callback();
});
};
switch (type) {
case RBDT_RESOLVE_CJS: {
const isDirectory = /[\\/]$/.test(path);
if (isDirectory) {
resolveDirectory(path.slice(0, path.length - 1));
} else {
resolveFile(path, "f", resolveCjs);
}
break;
}
case RBDT_RESOLVE_ESM: {
const isDirectory = /[\\/]$/.test(path);
if (isDirectory) {
resolveDirectory(path.slice(0, path.length - 1));
} else {
resolveFile(path);
}
break;
}
case RBDT_RESOLVE_DIRECTORY: {
resolveDirectory(path);
break;
}
case RBDT_RESOLVE_CJS_FILE: {
resolveFile(path, "f", resolveCjs);
break;
}
case RBDT_RESOLVE_ESM_FILE: {
resolveFile(path, "e", resolveEsm);
break;
}
case RBDT_FILE: {
if (files.has(path)) {
callback();
break;
}
files.add(path);
this.fs.realpath(path, (err, _realPath) => {
if (err) return callback(err);
const realPath = /** @type {string} */ (_realPath);
if (realPath !== path) {
fileSymlinks.add(path);
resolveFiles.add(path);
if (files.has(realPath)) return callback();
files.add(realPath);
}
push({
type: RBDT_FILE_DEPENDENCIES,
context: undefined,
path: realPath,
expected: undefined
});
callback();
});
break;
}
case RBDT_DIRECTORY: {
if (directories.has(path)) {
callback();
break;
}
directories.add(path);
this.fs.realpath(path, (err, _realPath) => {
if (err) return callback(err);
const realPath = /** @type {string} */ (_realPath);
if (realPath !== path) {
directorySymlinks.add(path);
resolveFiles.add(path);
if (directories.has(realPath)) return callback();
directories.add(realPath);
}
push({
type: RBDT_DIRECTORY_DEPENDENCIES,
context: undefined,
path: realPath,
expected: undefined
});
callback();
});
break;
}
case RBDT_FILE_DEPENDENCIES: {
// Check for known files without dependencies
if (/\.json5?$|\.yarn-integrity$|yarn\.lock$|\.ya?ml/.test(path)) {
process.nextTick(callback);
break;
}
// Check commonjs cache for the module
/** @type {NodeModule} */
const module = require.cache[path];
if (module && Array.isArray(module.children)) {
children: for (const child of module.children) {
let childPath = child.filename;
if (childPath) {
push({
type: RBDT_FILE,
context: undefined,
path: childPath,
expected: undefined
});
const context = dirname(this.fs, path);
for (const modulePath of module.paths) {
if (childPath.startsWith(modulePath)) {
let request = childPath.slice(modulePath.length + 1);
if (request.endsWith(".js"))
request = request.slice(0, -3);
push({
type: RBDT_RESOLVE_CJS_FILE,
context,
path: request,
expected: child.filename
});
continue children;
}
}
let request = relative(this.fs, context, childPath);
if (request.endsWith(".js")) request = request.slice(0, -3);
request = request.replace(/\\/g, "/");
if (!request.startsWith("../")) request = `./${request}`;
push({
type: RBDT_RESOLVE_CJS_FILE,
context,
path: request,
expected: child.filename
});
}
}
} else if (supportsEsm && /\.m?js$/.test(path)) {
if (!this._warnAboutExperimentalEsmTracking) {
this.logger.info(
"Node.js doesn't offer a (nice) way to introspect the ESM dependency graph yet.\n" +
"Until a full solution is available webpack uses an experimental ESM tracking based on parsing.\n" +
"As best effort webpack parses the ESM files to guess dependencies. But this can lead to expensive and incorrect tracking."
);
this._warnAboutExperimentalEsmTracking = true;
}
const lexer = require("es-module-lexer");
lexer.init.then(() => {
this.fs.readFile(path, (err, content) => {
if (err) return callback(err);
try {
const context = dirname(this.fs, path);
const source = content.toString();
const [imports] = lexer.parse(source);
for (const imp of imports) {
try {
let dependency;
if (imp.d === -1) {
// import ... from "..."
dependency = JSON.parse(
source.substring(imp.s - 1, imp.e + 1)
);
} else if (imp.d > -1) {
// import()
let expr = source.substring(imp.s, imp.e).trim();
if (expr[0] === "'")
expr = `"${expr
.slice(1, -1)
.replace(/"/g, '\\"')}"`;
dependency = JSON.parse(expr);
} else {
// e.g. import.meta
continue;
}
push({
type: RBDT_RESOLVE_ESM_FILE,
context,
path: dependency,
expected: undefined
});
} catch (e) {
this.logger.warn(
`Parsing of ${path} for build dependencies failed at 'import(${source.substring(
imp.s,
imp.e
)})'.\n` +
"Build dependencies behind this expression are ignored and might cause incorrect cache invalidation."
);
this.logger.debug(e.stack);
}
}
} catch (e) {
this.logger.warn(
`Parsing of ${path} for build dependencies failed and all dependencies of this file are ignored, which might cause incorrect cache invalidation..`
);
this.logger.debug(e.stack);
}
process.nextTick(callback);
});
}, callback);
break;
} else {
this.logger.log(
`Assuming ${path} has no dependencies as we were unable to assign it to any module system.`
);
}
process.nextTick(callback);
break;
}
case RBDT_DIRECTORY_DEPENDENCIES: {
const match = /(^.+[\\/]node_modules[\\/](?:@[^\\/]+[\\/])?[^\\/]+)/.exec(
path
);
const packagePath = match ? match[1] : path;
const packageJson = join(this.fs, packagePath, "package.json");
this.fs.readFile(packageJson, (err, content) => {
if (err) {
if (err.code === "ENOENT") {
resolveMissing.add(packageJson);
const parent = dirname(this.fs, packagePath);
if (parent !== packagePath) {
push({
type: RBDT_DIRECTORY_DEPENDENCIES,
context: undefined,
path: parent,
expected: undefined
});
}
callback();
return;
}
return callback(err);
}
resolveFiles.add(packageJson);
let packageData;
try {
packageData = JSON.parse(content.toString("utf-8"));
} catch (e) {
return callback(e);
}
const depsObject = packageData.dependencies;
if (typeof depsObject === "object" && depsObject) {
for (const dep of Object.keys(depsObject)) {
push({
type: RBDT_RESOLVE_DIRECTORY,
context: packagePath,
path: dep,
expected: undefined
});
}
}
callback();
});
break;
}
}
},
err => {
if (err) return callback(err);
for (const l of fileSymlinks) files.delete(l);
for (const l of directorySymlinks) directories.delete(l);
for (const k of invalidResolveResults) resolveResults.delete(k);
callback(null, {
files,
directories,
missing,
resolveResults,
resolveDependencies: {
files: resolveFiles,
directories: resolveDirectories,
missing: resolveMissing
}
});
}
);
}
/**
* @param {Map<string, string>} resolveResults results from resolving
* @param {function(Error=, boolean=): void} callback callback with true when resolveResults resolve the same way
* @returns {void}
*/
checkResolveResultsValid(resolveResults, callback) {
const {
resolveCjs,
resolveEsm,
resolveContext
} = this._createBuildDependenciesResolvers();
asyncLib.eachLimit(
resolveResults,
20,
([key, expectedResult], callback) => {
const [type, context, path] = key.split("\n");
switch (type) {
case "d":
resolveContext(context, path, {}, (err, result) => {
if (err) return callback(err);
if (result !== expectedResult) return callback(INVALID);
callback();
});
break;
case "f":
resolveCjs(context, path, {}, (err, result) => {
if (err) return callback(err);
if (result !== expectedResult) return callback(INVALID);
callback();
});
break;
case "e":
resolveEsm(context, path, {}, (err, result) => {
if (err) return callback(err);
if (result !== expectedResult) return callback(INVALID);
callback();
});
break;
default:
callback(new Error("Unexpected type in resolve result key"));
break;
}
},
/**
* @param {Error | typeof INVALID=} err error or invalid flag
* @returns {void}
*/
err => {
if (err === INVALID) {
return callback(null, false);
}
if (err) {
return callback(err);
}
return callback(null, true);
}
);
}
/**
*
* @param {number} startTime when processing the files has started
* @param {Iterable<string>} files all files
* @param {Iterable<string>} directories all directories
* @param {Iterable<string>} missing all missing files or directories
* @param {Object} options options object (for future extensions)
* @param {boolean=} options.hash should use hash to snapshot
* @param {boolean=} options.timestamp should use timestamp to snapshot
* @param {function(WebpackError=, Snapshot=): void} callback callback function
* @returns {void}
*/
createSnapshot(startTime, files, directories, missing, options, callback) {
/** @type {Map<string, FileSystemInfoEntry>} */
const fileTimestamps = new Map();
/** @type {Map<string, string>} */
const fileHashes = new Map();
/** @type {Map<string, TimestampAndHash | string>} */
const fileTshs = new Map();
/** @type {Map<string, FileSystemInfoEntry>} */
const contextTimestamps = new Map();
/** @type {Map<string, string>} */
const contextHashes = new Map();
/** @type {Map<string, TimestampAndHash | string>} */
const contextTshs = new Map();
/** @type {Map<string, boolean>} */
const missingExistence = new Map();
/** @type {Map<string, string>} */
const managedItemInfo = new Map();
/** @type {Set<string>} */
const managedFiles = new Set();
/** @type {Set<string>} */
const managedContexts = new Set();
/** @type {Set<string>} */
const managedMissing = new Set();
/** @type {Set<Snapshot>} */
const children = new Set();
/** @type {Set<string>} */
let unsharedFileTimestamps;
/** @type {Set<string>} */
let unsharedFileHashes;
/** @type {Set<string>} */
let unsharedFileTshs;
/** @type {Set<string>} */
let unsharedContextTimestamps;
/** @type {Set<string>} */
let unsharedContextHashes;
/** @type {Set<string>} */
let unsharedContextTshs;
/** @type {Set<string>} */
let unsharedMissingExistence;
/** @type {Set<string>} */
let unsharedManagedItemInfo;
/** @type {Set<string>} */
const managedItems = new Set();
/** 1 = timestamp, 2 = hash, 3 = timestamp + hash */
const mode = options && options.hash ? (options.timestamp ? 3 : 2) : 1;
let jobs = 1;
const jobDone = () => {
if (--jobs === 0) {
const snapshot = new Snapshot();
if (startTime) snapshot.setStartTime(startTime);
if (fileTimestamps.size !== 0) {
snapshot.setFileTimestamps(fileTimestamps);
this._fileTimestampsOptimization.storeUnsharedSnapshot(
snapshot,
unsharedFileTimestamps
);
}
if (fileHashes.size !== 0) {
snapshot.setFileHashes(fileHashes);
this._fileHashesOptimization.storeUnsharedSnapshot(
snapshot,
unsharedFileHashes
);
}
if (fileTshs.size !== 0) {
snapshot.setFileTshs(fileTshs);
this._fileTshsOptimization.storeUnsharedSnapshot(
snapshot,
unsharedFileTshs
);
}
if (contextTimestamps.size !== 0) {
snapshot.setContextTimestamps(contextTimestamps);
this._contextTimestampsOptimization.storeUnsharedSnapshot(
snapshot,
unsharedContextTimestamps
);
}
if (contextHashes.size !== 0) {
snapshot.setContextHashes(contextHashes);
this._contextHashesOptimization.storeUnsharedSnapshot(
snapshot,
unsharedContextHashes
);
}
if (contextTshs.size !== 0) {
snapshot.setContextTshs(contextTshs);
this._contextTshsOptimization.storeUnsharedSnapshot(
snapshot,
unsharedContextTshs
);
}
if (missingExistence.size !== 0) {
snapshot.setMissingExistence(missingExistence);
this._missingExistenceOptimization.storeUnsharedSnapshot(
snapshot,
unsharedMissingExistence
);
}
if (managedItemInfo.size !== 0) {
snapshot.setManagedItemInfo(managedItemInfo);
this._managedItemInfoOptimization.storeUnsharedSnapshot(
snapshot,
unsharedManagedItemInfo
);
}
const unsharedManagedFiles = this._managedFilesOptimization.optimize(
managedFiles,
undefined,
children
);
if (managedFiles.size !== 0) {
snapshot.setManagedFiles(managedFiles);
this._managedFilesOptimization.storeUnsharedSnapshot(
snapshot,
unsharedManagedFiles
);
}
const unsharedManagedContexts = this._managedContextsOptimization.optimize(
managedContexts,
undefined,
children
);
if (managedContexts.size !== 0) {
snapshot.setManagedContexts(managedContexts);
this._managedContextsOptimization.storeUnsharedSnapshot(
snapshot,
unsharedManagedContexts
);
}
const unsharedManagedMissing = this._managedMissingOptimization.optimize(
managedMissing,
undefined,
children
);
if (managedMissing.size !== 0) {
snapshot.setManagedMissing(managedMissing);
this._managedMissingOptimization.storeUnsharedSnapshot(
snapshot,
unsharedManagedMissing
);
}
if (children.size !== 0) {
snapshot.setChildren(children);
}
this._snapshotCache.set(snapshot, true);
this._statCreatedSnapshots++;
callback(null, snapshot);
}
};
const jobError = () => {
if (jobs > 0) {
// large negative number instead of NaN or something else to keep jobs to stay a SMI (v8)
jobs = -100000000