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Project.ts
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import {npath} from '@yarnpkg/fslib';
import {PortablePath, ppath, xfs, normalizeLineEndings, Filename} from '@yarnpkg/fslib';
import {parseSyml, stringifySyml} from '@yarnpkg/parsers';
import {UsageError} from 'clipanion';
import {createHash} from 'crypto';
import {structuredPatch} from 'diff';
import pick from 'lodash/pick';
import pLimit from 'p-limit';
import semver from 'semver';
import internal from 'stream';
import {promisify} from 'util';
import v8 from 'v8';
import zlib from 'zlib';
import {Cache, CacheOptions} from './Cache';
import {Configuration} from './Configuration';
import {Fetcher, FetchOptions} from './Fetcher';
import {Installer, BuildDirective, BuildDirectiveType, InstallStatus} from './Installer';
import {LegacyMigrationResolver} from './LegacyMigrationResolver';
import {Linker, LinkOptions} from './Linker';
import {LockfileResolver} from './LockfileResolver';
import {DependencyMeta, Manifest} from './Manifest';
import {MessageName} from './MessageName';
import {MultiResolver} from './MultiResolver';
import {Report, ReportError} from './Report';
import {ResolveOptions, Resolver} from './Resolver';
import {RunInstallPleaseResolver} from './RunInstallPleaseResolver';
import {SUPPORTS_GROUPS, StreamReport} from './StreamReport';
import {ThrowReport} from './ThrowReport';
import {WorkspaceResolver} from './WorkspaceResolver';
import {Workspace} from './Workspace';
import {isFolderInside} from './folderUtils';
import * as formatUtils from './formatUtils';
import * as hashUtils from './hashUtils';
import * as miscUtils from './miscUtils';
import * as nodeUtils from './nodeUtils';
import * as scriptUtils from './scriptUtils';
import * as semverUtils from './semverUtils';
import * as structUtils from './structUtils';
import {LinkType} from './types';
import {Descriptor, Ident, Locator, Package} from './types';
import {IdentHash, DescriptorHash, LocatorHash, PackageExtensionStatus} from './types';
// When upgraded, the lockfile entries have to be resolved again (but the specific
// versions are still pinned, no worry). Bump it when you change the fields within
// the Package type; no more no less.
export const LOCKFILE_VERSION = miscUtils.parseInt(
process.env.YARN_LOCKFILE_VERSION_OVERRIDE ??
8,
);
// Same thing but must be bumped when the members of the Project class changes (we
// don't recommend our users to check-in this file, so it's fine to bump it even
// between patch or minor releases).
const INSTALL_STATE_VERSION = 3;
const MULTIPLE_KEYS_REGEXP = / *, */g;
const TRAILING_SLASH_REGEXP = /\/$/;
const FETCHER_CONCURRENCY = 32;
const gzip = promisify(zlib.gzip);
const gunzip = promisify(zlib.gunzip);
export enum InstallMode {
/**
* Doesn't run the link step, and only fetches what's necessary to compute
* an updated lockfile.
*/
UpdateLockfile = `update-lockfile`,
/**
* Don't run the build scripts.
*/
SkipBuild = `skip-build`,
}
export type InstallOptions = {
/**
* Instance of the cache that the project will use when packages have to be
* fetched. Some fetches may occur even during the resolution, for example
* when resolving git packages.
*/
cache: Cache;
/**
* An optional override for the default fetching pipeline. This is for
* overrides only - if you need to _add_ resolvers, prefer adding them
* through regular plugins instead.
*/
fetcher?: Fetcher;
/**
* An optional override for the default resolution pipeline. This is for
* overrides only - if you need to _add_ resolvers, prefer adding them
* through regular plugins instead.
*/
resolver?: Resolver;
/**
* Provide a report instance that'll be use to store the information emitted
* during the install process.
*/
report: Report;
/**
* If true, Yarn will check that the lockfile won't change after the
* resolution step. Additionally, after the link step, Yarn will retrieve
* the list of files in `immutablePatterns` and check that they didn't get
* modified either.
*/
immutable?: boolean;
/**
* If true, Yarn will exclusively use the lockfile metadata. Setting this
* flag will cause it to ignore any change in the manifests, and to abort
* if any dependency isn't present in the lockfile.
*/
lockfileOnly?: boolean;
/**
* If true, Yarn will check that the pre-existing resolutions found in the
* lockfile are coherent with the ranges that depend on them.
*/
checkResolutions?: boolean;
/**
* Changes which artifacts are generated during the install. Check the
* enumeration documentation for details.
*/
mode?: InstallMode;
/**
* If true (the default), Yarn will update the workspace manifests once the
* install has completed.
*/
persistProject?: boolean;
};
const INSTALL_STATE_FIELDS = {
restoreLinkersCustomData: [
`linkersCustomData`,
] as const,
restoreResolutions: [
`accessibleLocators`,
`conditionalLocators`,
`disabledLocators`,
`optionalBuilds`,
`storedDescriptors`,
`storedResolutions`,
`storedPackages`,
`lockFileChecksum`,
] as const,
restoreBuildState: [
`skippedBuilds`,
`storedBuildState`,
] as const,
};
type RestoreInstallStateOpts = {
[key in keyof typeof INSTALL_STATE_FIELDS]?: boolean;
};
// Just a type that's the union of all the fields declared in `INSTALL_STATE_FIELDS`
type InstallState = Pick<Project, typeof INSTALL_STATE_FIELDS[keyof typeof INSTALL_STATE_FIELDS][number]>;
export type PeerRequirement = {
subject: LocatorHash;
requested: Ident;
rootRequester: LocatorHash;
allRequesters: Array<LocatorHash>;
};
export enum PeerWarningType {
NotProvided,
NotCompatible,
NotCompatibleAggregate,
}
export type PeerWarning = {
type: PeerWarningType.NotProvided;
subject: Locator;
requested: Ident;
requester: Ident;
hash: string;
} | {
type: PeerWarningType.NotCompatible;
subject: Locator;
requested: Ident;
requester: Ident;
version: string;
hash: string;
requirementCount: number;
} | {
type: PeerWarningType.NotCompatibleAggregate;
subject: Locator;
requested: Ident;
dependents: Map<LocatorHash, Locator>;
requesters: Map<LocatorHash, Locator>;
links: Map<LocatorHash, Locator>;
version: string;
hash: string;
};
const makeLockfileChecksum = (normalizedContent: string) =>
hashUtils.makeHash(`${INSTALL_STATE_VERSION}`, normalizedContent);
export class Project {
public readonly configuration: Configuration;
public readonly cwd: PortablePath;
/**
* Is meant to be populated by the consumer. Should the descriptor referenced
* by the key be requested, the descriptor referenced in the value will be
* resolved instead. The resolved data will then be used as final resolution
* for the initial descriptor.
*
* Note that the lockfile will contain the second descriptor but not the
* first one (meaning that if you remove the alias during a subsequent
* install, it'll be lost and the real package will be resolved / installed).
*/
public resolutionAliases: Map<DescriptorHash, DescriptorHash> = new Map();
public workspaces: Array<Workspace> = [];
public workspacesByCwd: Map<PortablePath, Workspace> = new Map();
public workspacesByIdent: Map<IdentHash, Workspace> = new Map();
public storedResolutions: Map<DescriptorHash, LocatorHash> = new Map();
public storedDescriptors: Map<DescriptorHash, Descriptor> = new Map();
public storedPackages: Map<LocatorHash, Package> = new Map();
public storedChecksums: Map<LocatorHash, string> = new Map();
public storedBuildState: Map<LocatorHash, string> = new Map();
public accessibleLocators: Set<LocatorHash> = new Set();
public conditionalLocators: Set<LocatorHash> = new Set();
public disabledLocators: Set<LocatorHash> = new Set();
public originalPackages: Map<LocatorHash, Package> = new Map();
public optionalBuilds: Set<LocatorHash> = new Set();
public skippedBuilds: Set<LocatorHash> = new Set();
/**
* If true, the data contained within `originalPackages` are from a different
* lockfile version and need to be refreshed.
*/
public lockfileLastVersion: number | null = null;
public lockfileNeedsRefresh: boolean = false;
/**
* Populated by the `resolveEverything` method.
* *Not* stored inside the install state.
*
* The map keys are 6 hexadecimal characters except the first one, always `p`.
*/
public peerRequirements: Map<string, PeerRequirement> = new Map();
public peerWarnings: Array<PeerWarning> = [];
/**
* Contains whatever data the linkers (cf `Linker.ts`) want to persist
* from an install to another.
*/
public linkersCustomData: Map<string, unknown> = new Map();
/**
* Those checksums are used to detect whether the relevant files actually
* changed since we last read them (to skip part of their generation).
*/
public lockFileChecksum: string | null = null;
public installStateChecksum: string | null = null;
static async find(configuration: Configuration, startingCwd: PortablePath): Promise<{project: Project, workspace: Workspace | null, locator: Locator}> {
if (!configuration.projectCwd)
throw new UsageError(`No project found in ${startingCwd}`);
let packageCwd = configuration.projectCwd;
let nextCwd = startingCwd;
let currentCwd = null;
while (currentCwd !== configuration.projectCwd) {
currentCwd = nextCwd;
if (xfs.existsSync(ppath.join(currentCwd, Filename.manifest))) {
packageCwd = currentCwd;
break;
}
nextCwd = ppath.dirname(currentCwd);
}
const project = new Project(configuration.projectCwd, {configuration});
Configuration.telemetry?.reportProject(project.cwd);
await project.setupResolutions();
await project.setupWorkspaces();
Configuration.telemetry?.reportWorkspaceCount(project.workspaces.length);
Configuration.telemetry?.reportDependencyCount(project.workspaces.reduce((sum, workspace) => sum + workspace.manifest.dependencies.size + workspace.manifest.devDependencies.size, 0));
// If we're in a workspace, no need to go any further to find which package we're in
const workspace = project.tryWorkspaceByCwd(packageCwd);
if (workspace)
return {project, workspace, locator: workspace.anchoredLocator};
// Otherwise, we need to ask the project (which will in turn ask the linkers for help)
// Note: the trailing slash is caused by a quirk in the PnP implementation that requires folders to end with a trailing slash to disambiguate them from regular files
const locator = await project.findLocatorForLocation(`${packageCwd}/` as PortablePath, {strict: true});
if (locator)
return {project, locator, workspace: null};
const projectCwdLog = formatUtils.pretty(configuration, project.cwd, formatUtils.Type.PATH);
const packageCwdLog = formatUtils.pretty(configuration, ppath.relative(project.cwd, packageCwd), formatUtils.Type.PATH);
const unintendedProjectLog = `- If ${projectCwdLog} isn't intended to be a project, remove any yarn.lock and/or package.json file there.`;
const missingWorkspaceLog = `- If ${projectCwdLog} is intended to be a project, it might be that you forgot to list ${packageCwdLog} in its workspace configuration.`;
const decorrelatedProjectLog = `- Finally, if ${projectCwdLog} is fine and you intend ${packageCwdLog} to be treated as a completely separate project (not even a workspace), create an empty yarn.lock file in it.`;
throw new UsageError(`The nearest package directory (${formatUtils.pretty(configuration, packageCwd, formatUtils.Type.PATH)}) doesn't seem to be part of the project declared in ${formatUtils.pretty(configuration, project.cwd, formatUtils.Type.PATH)}.\n\n${[
unintendedProjectLog,
missingWorkspaceLog,
decorrelatedProjectLog,
].join(`\n`)}`);
}
constructor(projectCwd: PortablePath, {configuration}: {configuration: Configuration}) {
this.configuration = configuration;
this.cwd = projectCwd;
}
private async setupResolutions() {
this.storedResolutions = new Map();
this.storedDescriptors = new Map();
this.storedPackages = new Map();
this.lockFileChecksum = null;
const lockfilePath = ppath.join(this.cwd, Filename.lockfile);
const defaultLanguageName = this.configuration.get(`defaultLanguageName`);
if (xfs.existsSync(lockfilePath)) {
const content = await xfs.readFilePromise(lockfilePath, `utf8`);
// We store the salted checksum of the lockfile in order to invalidate the install state when needed
this.lockFileChecksum = makeLockfileChecksum(content);
const parsed: any = parseSyml(content);
// Protects against v1 lockfiles
if (parsed.__metadata) {
const lockfileVersion = parsed.__metadata.version;
const cacheKey = parsed.__metadata.cacheKey;
this.lockfileLastVersion = lockfileVersion;
this.lockfileNeedsRefresh = lockfileVersion < LOCKFILE_VERSION;
for (const key of Object.keys(parsed)) {
if (key === `__metadata`)
continue;
const data = parsed[key];
if (typeof data.resolution === `undefined`)
throw new Error(`Assertion failed: Expected the lockfile entry to have a resolution field (${key})`);
const locator = structUtils.parseLocator(data.resolution, true);
const manifest = new Manifest();
manifest.load(data, {yamlCompatibilityMode: true});
const version = manifest.version;
const languageName = manifest.languageName || defaultLanguageName;
const linkType = data.linkType.toUpperCase() as LinkType;
const conditions = data.conditions ?? null;
const dependencies = manifest.dependencies;
const peerDependencies = manifest.peerDependencies;
const dependenciesMeta = manifest.dependenciesMeta;
const peerDependenciesMeta = manifest.peerDependenciesMeta;
const bin = manifest.bin;
if (data.checksum != null) {
const checksum = typeof cacheKey !== `undefined` && !data.checksum.includes(`/`)
? `${cacheKey}/${data.checksum}`
: data.checksum;
this.storedChecksums.set(locator.locatorHash, checksum);
}
const pkg: Package = {...locator, version, languageName, linkType, conditions, dependencies, peerDependencies, dependenciesMeta, peerDependenciesMeta, bin};
this.originalPackages.set(pkg.locatorHash, pkg);
for (const entry of key.split(MULTIPLE_KEYS_REGEXP)) {
let descriptor = structUtils.parseDescriptor(entry);
// Yarn pre-v4 used to generate descriptors that were sometimes
// missing the `npm:` protocol
if (lockfileVersion <= 6) {
descriptor = this.configuration.normalizeDependency(descriptor);
descriptor = structUtils.makeDescriptor(descriptor, descriptor.range.replace(/^patch:[^@]+@(?!npm(:|%3A))/, `$1npm%3A`));
}
this.storedDescriptors.set(descriptor.descriptorHash, descriptor);
this.storedResolutions.set(descriptor.descriptorHash, locator.locatorHash);
}
}
} else if (content.includes(`yarn lockfile v1`)) {
this.lockfileLastVersion = -1;
}
}
}
private async setupWorkspaces() {
this.workspaces = [];
this.workspacesByCwd = new Map();
this.workspacesByIdent = new Map();
const pathsChecked = new Set<PortablePath>();
const limitSetup = pLimit(4);
const loadWorkspaceReducer = async (previousTask: Promise<void>, workspaceCwd: PortablePath): Promise<void> => {
if (pathsChecked.has(workspaceCwd))
return previousTask;
pathsChecked.add(workspaceCwd);
const workspace = new Workspace(workspaceCwd, {project: this});
await limitSetup(() => workspace.setup());
const nextTask = previousTask.then(() => {
this.addWorkspace(workspace);
});
return Array.from(workspace.workspacesCwds).reduce(loadWorkspaceReducer, nextTask);
};
await loadWorkspaceReducer(Promise.resolve(), this.cwd);
}
private addWorkspace(workspace: Workspace) {
const dup = this.workspacesByIdent.get(workspace.anchoredLocator.identHash);
if (typeof dup !== `undefined`)
throw new Error(`Duplicate workspace name ${structUtils.prettyIdent(this.configuration, workspace.anchoredLocator)}: ${npath.fromPortablePath(workspace.cwd)} conflicts with ${npath.fromPortablePath(dup.cwd)}`);
this.workspaces.push(workspace);
this.workspacesByCwd.set(workspace.cwd, workspace);
this.workspacesByIdent.set(workspace.anchoredLocator.identHash, workspace);
}
get topLevelWorkspace() {
return this.getWorkspaceByCwd(this.cwd);
}
tryWorkspaceByCwd(workspaceCwd: PortablePath) {
if (!ppath.isAbsolute(workspaceCwd))
workspaceCwd = ppath.resolve(this.cwd, workspaceCwd);
workspaceCwd = ppath.normalize(workspaceCwd)
.replace(/\/+$/, ``) as PortablePath;
const workspace = this.workspacesByCwd.get(workspaceCwd);
if (!workspace)
return null;
return workspace;
}
getWorkspaceByCwd(workspaceCwd: PortablePath) {
const workspace = this.tryWorkspaceByCwd(workspaceCwd);
if (!workspace)
throw new Error(`Workspace not found (${workspaceCwd})`);
return workspace;
}
tryWorkspaceByFilePath(filePath: PortablePath) {
let bestWorkspace = null;
for (const workspace of this.workspaces) {
const rel = ppath.relative(workspace.cwd, filePath);
if (rel.startsWith(`../`))
continue;
if (bestWorkspace && bestWorkspace.cwd.length >= workspace.cwd.length)
continue;
bestWorkspace = workspace;
}
if (!bestWorkspace)
return null;
return bestWorkspace;
}
getWorkspaceByFilePath(filePath: PortablePath) {
const workspace = this.tryWorkspaceByFilePath(filePath);
if (!workspace)
throw new Error(`Workspace not found (${filePath})`);
return workspace;
}
tryWorkspaceByIdent(ident: Ident) {
const workspace = this.workspacesByIdent.get(ident.identHash);
if (typeof workspace === `undefined`)
return null;
return workspace;
}
getWorkspaceByIdent(ident: Ident) {
const workspace = this.tryWorkspaceByIdent(ident);
if (!workspace)
throw new Error(`Workspace not found (${structUtils.prettyIdent(this.configuration, ident)})`);
return workspace;
}
tryWorkspaceByDescriptor(descriptor: Descriptor) {
if (descriptor.range.startsWith(WorkspaceResolver.protocol)) {
const specifier = descriptor.range.slice(WorkspaceResolver.protocol.length) as PortablePath;
if (specifier !== `^` && specifier !== `~` && specifier !== `*` && !semverUtils.validRange(specifier)) {
return this.tryWorkspaceByCwd(specifier);
}
}
const workspace = this.tryWorkspaceByIdent(descriptor);
if (workspace === null)
return null;
if (structUtils.isVirtualDescriptor(descriptor))
descriptor = structUtils.devirtualizeDescriptor(descriptor);
if (!workspace.accepts(descriptor.range))
return null;
return workspace;
}
getWorkspaceByDescriptor(descriptor: Descriptor) {
const workspace = this.tryWorkspaceByDescriptor(descriptor);
if (workspace === null)
throw new Error(`Workspace not found (${structUtils.prettyDescriptor(this.configuration, descriptor)})`);
return workspace;
}
tryWorkspaceByLocator(locator: Locator) {
const workspace = this.tryWorkspaceByIdent(locator);
if (workspace === null)
return null;
if (structUtils.isVirtualLocator(locator))
locator = structUtils.devirtualizeLocator(locator);
if (workspace.anchoredLocator.locatorHash !== locator.locatorHash)
return null;
return workspace;
}
getWorkspaceByLocator(locator: Locator) {
const workspace = this.tryWorkspaceByLocator(locator);
if (!workspace)
throw new Error(`Workspace not found (${structUtils.prettyLocator(this.configuration, locator)})`);
return workspace;
}
private deleteDescriptor(descriptorHash: DescriptorHash) {
this.storedResolutions.delete(descriptorHash);
this.storedDescriptors.delete(descriptorHash);
}
private deleteLocator(locatorHash: LocatorHash) {
this.originalPackages.delete(locatorHash);
this.storedPackages.delete(locatorHash);
this.accessibleLocators.delete(locatorHash);
}
forgetResolution(descriptor: Descriptor): void;
forgetResolution(locator: Locator): void;
forgetResolution(dataStructure: Descriptor | Locator): void {
if (`descriptorHash` in dataStructure) {
const locatorHash = this.storedResolutions.get(dataStructure.descriptorHash);
this.deleteDescriptor(dataStructure.descriptorHash);
// We delete unused locators
const remainingResolutions = new Set(this.storedResolutions.values());
if (typeof locatorHash !== `undefined` && !remainingResolutions.has(locatorHash)) {
this.deleteLocator(locatorHash);
}
}
if (`locatorHash` in dataStructure) {
this.deleteLocator(dataStructure.locatorHash);
// We delete all of the descriptors that have been resolved to the locator
for (const [descriptorHash, locatorHash] of this.storedResolutions) {
if (locatorHash === dataStructure.locatorHash) {
this.deleteDescriptor(descriptorHash);
}
}
}
}
forgetTransientResolutions() {
const resolver = this.configuration.makeResolver();
const reverseLookup = new Map<LocatorHash, Set<DescriptorHash>>();
for (const [descriptorHash, locatorHash] of this.storedResolutions.entries()) {
let descriptorHashes = reverseLookup.get(locatorHash);
if (!descriptorHashes)
reverseLookup.set(locatorHash, descriptorHashes = new Set());
descriptorHashes.add(descriptorHash);
}
for (const pkg of this.originalPackages.values()) {
let shouldPersistResolution: boolean;
try {
shouldPersistResolution = resolver.shouldPersistResolution(pkg, {project: this, resolver});
} catch {
shouldPersistResolution = false;
}
if (!shouldPersistResolution) {
this.deleteLocator(pkg.locatorHash);
const descriptors = reverseLookup.get(pkg.locatorHash);
if (descriptors) {
reverseLookup.delete(pkg.locatorHash);
for (const descriptorHash of descriptors) {
this.deleteDescriptor(descriptorHash);
}
}
}
}
}
forgetVirtualResolutions() {
for (const pkg of this.storedPackages.values()) {
for (const [dependencyHash, dependency] of pkg.dependencies) {
if (structUtils.isVirtualDescriptor(dependency)) {
pkg.dependencies.set(dependencyHash, structUtils.devirtualizeDescriptor(dependency));
}
}
}
}
getDependencyMeta(ident: Ident, version: string | null): DependencyMeta {
const dependencyMeta = {};
const dependenciesMeta = this.topLevelWorkspace.manifest.dependenciesMeta;
const dependencyMetaSet = dependenciesMeta.get(structUtils.stringifyIdent(ident));
if (!dependencyMetaSet)
return dependencyMeta;
const defaultMeta = dependencyMetaSet.get(null);
if (defaultMeta)
Object.assign(dependencyMeta, defaultMeta);
if (version === null || !semver.valid(version))
return dependencyMeta;
for (const [range, meta] of dependencyMetaSet)
if (range !== null && range === version)
Object.assign(dependencyMeta, meta);
return dependencyMeta;
}
async findLocatorForLocation(cwd: PortablePath, {strict = false}: {strict?: boolean} = {}) {
const report = new ThrowReport();
const linkers = this.configuration.getLinkers();
const linkerOptions = {project: this, report};
for (const linker of linkers) {
const locator = await linker.findPackageLocator(cwd, linkerOptions);
if (locator) {
// If strict mode, the specified cwd must be a package,
// not merely contained in a package.
if (strict) {
const location = await linker.findPackageLocation(locator, linkerOptions);
if (location.replace(TRAILING_SLASH_REGEXP, ``) !== cwd.replace(TRAILING_SLASH_REGEXP, ``)) {
continue;
}
}
return locator;
}
}
return null;
}
async loadUserConfig() {
const configPath = ppath.join(this.cwd, `yarn.config.cjs`);
if (!await xfs.existsPromise(configPath))
return null;
return miscUtils.dynamicRequire(configPath);
}
async preparePackage(originalPkg: Package, {resolver, resolveOptions}: {resolver: Resolver, resolveOptions: ResolveOptions}) {
const pkg = this.configuration.normalizePackage(originalPkg);
for (const [identHash, descriptor] of pkg.dependencies) {
const dependency = await this.configuration.reduceHook(hooks => {
return hooks.reduceDependency;
}, descriptor, this, pkg, descriptor, {
resolver,
resolveOptions,
});
if (!structUtils.areIdentsEqual(descriptor, dependency))
throw new Error(`Assertion failed: The descriptor ident cannot be changed through aliases`);
const bound = resolver.bindDescriptor(dependency, pkg, resolveOptions);
pkg.dependencies.set(identHash, bound);
}
return pkg;
}
async resolveEverything(opts: Pick<InstallOptions, `report` | `resolver` | `checkResolutions` | `mode`> & ({report: Report, lockfileOnly: true} | {lockfileOnly?: boolean, cache: Cache})) {
if (!this.workspacesByCwd || !this.workspacesByIdent)
throw new Error(`Workspaces must have been setup before calling this function`);
// Reverts the changes that have been applied to the tree because of any previous virtual resolution pass
this.forgetVirtualResolutions();
// Keep a copy of the original packages so that we can figure out what was added / removed later
const initialPackages = new Map(this.originalPackages);
const addedPackages: Array<Locator> = [];
// Ensures that we notice it when dependencies are added / removed from all sources coming from the filesystem
if (!opts.lockfileOnly)
this.forgetTransientResolutions();
// Note that the resolution process is "offline" until everything has been
// successfully resolved; all the processing is expected to have zero side
// effects until we're ready to set all the variables at once (the one
// exception being when a resolver needs to fetch a package, in which case
// we might need to populate the cache).
//
// This makes it possible to use the same Project instance for multiple
// purposes at the same time (since `resolveEverything` is async, it might
// happen that we want to do something while waiting for it to end; if we
// were to mutate the project then it would end up in a partial state that
// could lead to hard-to-debug issues).
const realResolver = opts.resolver || this.configuration.makeResolver();
const legacyMigrationResolver = new LegacyMigrationResolver(realResolver);
await legacyMigrationResolver.setup(this, {report: opts.report});
const resolverChain = opts.lockfileOnly
? [new RunInstallPleaseResolver(realResolver)]
: [legacyMigrationResolver, realResolver];
const resolver: Resolver = new MultiResolver([
new LockfileResolver(realResolver),
...resolverChain,
]);
const noLockfileResolver: Resolver = new MultiResolver([
...resolverChain,
]);
const fetcher = this.configuration.makeFetcher();
const resolveOptions: ResolveOptions = opts.lockfileOnly
? {project: this, report: opts.report, resolver}
: {project: this, report: opts.report, resolver, fetchOptions: {project: this, cache: opts.cache, checksums: this.storedChecksums, report: opts.report, fetcher, cacheOptions: {mirrorWriteOnly: true}}};
const allDescriptors = new Map<DescriptorHash, Descriptor>();
const allPackages = new Map<LocatorHash, Package>();
const allResolutions = new Map<DescriptorHash, LocatorHash>();
const originalPackages = new Map<LocatorHash, Package>();
const packageResolutionPromises = new Map<LocatorHash, Promise<Package>>();
const descriptorResolutionPromises = new Map<DescriptorHash, Promise<Package>>();
const dependencyResolutionLocator = this.topLevelWorkspace.anchoredLocator;
const resolutionDependencies = new Set<LocatorHash>();
const resolutionQueue: Array<Promise<unknown>> = [];
// Doing these calls early is important: it seems calling it after we've started the resolution incurs very high
// performance penalty on WSL, with the Gatsby benchmark jumping from ~28s to ~130s. It's possible this is due to
// the number of async tasks being listed in the report, although it's strange this doesn't occur on other systems.
const currentArchitecture = nodeUtils.getArchitectureSet();
const supportedArchitectures = this.configuration.getSupportedArchitectures();
await opts.report.startProgressPromise(Report.progressViaTitle(), async progress => {
const startPackageResolution = async (locator: Locator) => {
const originalPkg = await miscUtils.prettifyAsyncErrors(async () => {
return await resolver.resolve(locator, resolveOptions);
}, message => {
return `${structUtils.prettyLocator(this.configuration, locator)}: ${message}`;
});
if (!structUtils.areLocatorsEqual(locator, originalPkg))
throw new Error(`Assertion failed: The locator cannot be changed by the resolver (went from ${structUtils.prettyLocator(this.configuration, locator)} to ${structUtils.prettyLocator(this.configuration, originalPkg)})`);
originalPackages.set(originalPkg.locatorHash, originalPkg);
// What didn't exist before is an added package
const existedBefore = initialPackages.delete(originalPkg.locatorHash);
if (!existedBefore && !this.tryWorkspaceByLocator(originalPkg))
addedPackages.push(originalPkg);
const pkg = await this.preparePackage(originalPkg, {resolver, resolveOptions});
const dependencyResolutions = miscUtils.allSettledSafe([...pkg.dependencies.values()].map(descriptor => {
return scheduleDescriptorResolution(descriptor);
}));
resolutionQueue.push(dependencyResolutions);
// While the promise is now part of `resolutionQueue`, nothing is
// technically `awaiting` it just yet (and nothing will until the
// current resolution pass fully ends, and the next one starts).
//
// To avoid V8 printing an UnhandledPromiseRejectionWarning, we
// bind a empty `catch`.
//
dependencyResolutions.catch(() => {});
allPackages.set(pkg.locatorHash, pkg);
return pkg;
};
const schedulePackageResolution = async (locator: Locator) => {
const promise = packageResolutionPromises.get(locator.locatorHash);
if (typeof promise !== `undefined`)
return promise;
const newPromise = Promise.resolve().then(() => startPackageResolution(locator));
packageResolutionPromises.set(locator.locatorHash, newPromise);
return newPromise;
};
const startDescriptorAliasing = async (descriptor: Descriptor, alias: Descriptor): Promise<Package> => {
const resolution = await scheduleDescriptorResolution(alias);
allDescriptors.set(descriptor.descriptorHash, descriptor);
allResolutions.set(descriptor.descriptorHash, resolution.locatorHash);
return resolution;
};
const startDescriptorResolution = async (descriptor: Descriptor): Promise<Package> => {
progress.setTitle(structUtils.prettyDescriptor(this.configuration, descriptor));
const alias = this.resolutionAliases.get(descriptor.descriptorHash);
if (typeof alias !== `undefined`)
return startDescriptorAliasing(descriptor, this.storedDescriptors.get(alias)!);
const resolutionDependenciesList = resolver.getResolutionDependencies(descriptor, resolveOptions);
const resolvedDependencies = Object.fromEntries(
await miscUtils.allSettledSafe(
Object.entries(resolutionDependenciesList).map(async ([dependencyName, dependency]) => {
const bound = resolver.bindDescriptor(dependency, dependencyResolutionLocator, resolveOptions);
const resolvedPackage = await scheduleDescriptorResolution(bound);
resolutionDependencies.add(resolvedPackage.locatorHash);
return [dependencyName, resolvedPackage] as const;
}),
),
);
const candidateResolutions = await miscUtils.prettifyAsyncErrors(async () => {
return await resolver.getCandidates(descriptor, resolvedDependencies, resolveOptions);
}, message => {
return `${structUtils.prettyDescriptor(this.configuration, descriptor)}: ${message}`;
});
const finalResolution = candidateResolutions[0];
if (typeof finalResolution === `undefined`)
throw new ReportError(MessageName.RESOLUTION_FAILED, `${structUtils.prettyDescriptor(this.configuration, descriptor)}: No candidates found`);
if (opts.checkResolutions) {
const {locators} = await noLockfileResolver.getSatisfying(descriptor, resolvedDependencies, [finalResolution], {...resolveOptions, resolver: noLockfileResolver});
if (!locators.find(locator => locator.locatorHash === finalResolution.locatorHash)) {
throw new ReportError(MessageName.RESOLUTION_MISMATCH, `Invalid resolution ${structUtils.prettyResolution(this.configuration, descriptor, finalResolution)}`);
}
}
allDescriptors.set(descriptor.descriptorHash, descriptor);
allResolutions.set(descriptor.descriptorHash, finalResolution.locatorHash);
return schedulePackageResolution(finalResolution);
};
const scheduleDescriptorResolution = (descriptor: Descriptor) => {
const promise = descriptorResolutionPromises.get(descriptor.descriptorHash);
if (typeof promise !== `undefined`)
return promise;
allDescriptors.set(descriptor.descriptorHash, descriptor);
const newPromise = Promise.resolve().then(() => startDescriptorResolution(descriptor));
descriptorResolutionPromises.set(descriptor.descriptorHash, newPromise);
return newPromise;
};
for (const workspace of this.workspaces) {
const workspaceDescriptor = workspace.anchoredDescriptor;
resolutionQueue.push(scheduleDescriptorResolution(workspaceDescriptor));
}
while (resolutionQueue.length > 0) {
const copy = [...resolutionQueue];
resolutionQueue.length = 0;
await miscUtils.allSettledSafe(copy);
}
});
// What remains is a removed package
const removedPackages: Array<Locator> = miscUtils.mapAndFilter(initialPackages.values(), pkg => {
if (this.tryWorkspaceByLocator(pkg))
return miscUtils.mapAndFilter.skip;
return pkg;
});
if (addedPackages.length > 0 || removedPackages.length > 0) {
const topLevelResolutions = new Set(this.workspaces.flatMap(workspace => {
const workspacePkg = allPackages.get(workspace.anchoredLocator.locatorHash);
if (!workspacePkg)
throw new Error(`Assertion failed: The workspace should have been resolved`);
return Array.from(workspacePkg.dependencies.values(), descriptor => {
const resolution = allResolutions.get(descriptor.descriptorHash);
if (!resolution)
throw new Error(`Assertion failed: The resolution should have been registered`);
return resolution;
});
}));
const sortTopLevelFirst = (locator: Locator) => topLevelResolutions.has(locator.locatorHash) ? `0` : `1`;
const sortByLocatorString = (locator: Locator) => structUtils.stringifyLocator(locator);
const sortedAddedPackages = miscUtils.sortMap(addedPackages, [sortTopLevelFirst, sortByLocatorString]);
const sortedRemovedPackages = miscUtils.sortMap(removedPackages, [sortTopLevelFirst, sortByLocatorString]);
const recommendedLength = opts.report.getRecommendedLength();
if (sortedAddedPackages.length > 0)
opts.report.reportInfo(MessageName.UPDATED_RESOLUTION_RECORD, `${formatUtils.pretty(this.configuration, `+`, formatUtils.Type.ADDED)} ${formatUtils.prettyTruncatedLocatorList(this.configuration, sortedAddedPackages, recommendedLength)}`);
if (sortedRemovedPackages.length > 0) {
opts.report.reportInfo(MessageName.UPDATED_RESOLUTION_RECORD, `${formatUtils.pretty(this.configuration, `-`, formatUtils.Type.REMOVED)} ${formatUtils.prettyTruncatedLocatorList(this.configuration, sortedRemovedPackages, recommendedLength)}`);
}
}
// In this step we now create virtual packages for each package with at
// least one peer dependency. We also use it to search for the alias
// descriptors that aren't depended upon by anything and can be safely
// pruned.
const volatileDescriptors = new Set(this.resolutionAliases.values());
const optionalBuilds = new Set(allPackages.keys());
const accessibleLocators = new Set<LocatorHash>();
const peerRequirements: Project['peerRequirements'] = new Map();
const peerWarnings: Project['peerWarnings'] = [];
applyVirtualResolutionMutations({
project: this,
accessibleLocators,
volatileDescriptors,
optionalBuilds,
peerRequirements,
peerWarnings,
allDescriptors,