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index.js10.2 KB · 323 lines
// The arborist manages three trees:// - actual// - virtual// - ideal//// The actual tree is what's present on disk in the node_modules tree// and elsewhere that links may extend.//// The virtual tree is loaded from metadata (package.json and lock files).//// The ideal tree is what we WANT that actual tree to become.  This starts// with the virtual tree, and then applies the options requesting// add/remove/update actions.//// To reify a tree, we calculate a diff between the ideal and actual trees,// and then turn the actual tree into the ideal tree by taking the actions// required.  At the end of the reification process, the actualTree is// updated to reflect the changes.//// Each tree has an Inventory at the root.  Shrinkwrap is tracked by Arborist// instance.  It always refers to the actual tree, but is updated (and written// to disk) on reification. // Each of the mixin "classes" adds functionality, but are not dependent on// constructor call order.  So, we just load them in an array, and build up// the base class, so that the overall voltron class is easier to test and// cover, and separation of concerns can be maintained. const { resolve } = require('node:path')const { homedir } = require('node:os')const { depth } = require('treeverse')const mapWorkspaces = require('@npmcli/map-workspaces')const { log, time } = require('proc-log')const { saveTypeMap } = require('../add-rm-pkg-deps.js')const AuditReport = require('../audit-report.js')const relpath = require('../relpath.js')const PackumentCache = require('../packument-cache.js') const mixins = [  require('../tracker.js'),  require('./build-ideal-tree.js'),  require('./load-actual.js'),  require('./load-virtual.js'),  require('./rebuild.js'),  require('./reify.js'),  require('./isolated-reifier.js'),] const _setWorkspaces = Symbol.for('setWorkspaces')const Base = mixins.reduce((a, b) => b(a), require('node:events')) // if it's 1, 2, or 3, set it explicitly that.// if undefined or null, set it null// otherwise, throw.const lockfileVersion = lfv => {  if (lfv === 1 || lfv === 2 || lfv === 3) {    return lfv  }   if (lfv === undefined || lfv === null) {    return null  }   throw new TypeError('Invalid lockfileVersion config: ' + lfv)} class Arborist extends Base {  constructor (options = {}) {    const timeEnd = time.start('arborist:ctor')    super(options)     // normalize trailing slash    const registry = options.registry || 'https://registry.npmjs.org'    options.registry = this.registry = registry.replace(/(?<!\/)\/+$/, '') + '/'     // TODO as we consolidate constructors it's more apparent that we are not parsing options and using this.options consistently    const {      actualTree,      global,      idealTree = null,      installLinks = false,      legacyPeerDeps = false,      virtualTree,      workspaces,    } = options     if (workspaces?.length && global) {      throw new Error('Cannot operate on workspaces in global mode')    }     // the tree of nodes on disk    this.actualTree = actualTree    this.idealTree = idealTree    this.installLinks = installLinks    this.legacyPeerDeps = legacyPeerDeps    // the virtual tree we load from a shrinkwrap    this.virtualTree = virtualTree     this.options = {      nodeVersion: process.version,      ...options,      Arborist: this.constructor,      allowScripts: options.allowScripts ?? null,      binLinks: 'binLinks' in options ? !!options.binLinks : true,      cache: options.cache || `${homedir()}/.npm/_cacache`,      dangerouslyAllowAllScripts: !!options.dangerouslyAllowAllScripts,      dryRun: !!options.dryRun,      formatPackageLock: 'formatPackageLock' in options ? !!options.formatPackageLock : true,      force: !!options.force,      global: !!options.global,      ignoreScripts: !!options.ignoreScripts,      installStrategy: options.global ? 'shallow' : (options.installStrategy ? options.installStrategy : 'hoisted'),      lockfileVersion: lockfileVersion(options.lockfileVersion),      packageLockOnly: !!options.packageLockOnly,      packumentCache: options.packumentCache || new PackumentCache(),      path: options.path || '.',      rebuildBundle: 'rebuildBundle' in options ? !!options.rebuildBundle : true,      replaceRegistryHost: options.replaceRegistryHost,      savePrefix: 'savePrefix' in options ? options.savePrefix : '^',      scriptShell: options.scriptShell,      usePackageLock: 'packageLock' in options ? options.packageLock : true,      workspaces: options.workspaces || [],      workspacesEnabled: options.workspacesEnabled !== false,    }    // TODO we only ever look at this.options.replaceRegistryHost, not    // this.replaceRegistryHost.  Defaulting needs to be written back to    // this.options to work properly    this.replaceRegistryHost = this.options.replaceRegistryHost =      (!this.options.replaceRegistryHost || this.options.replaceRegistryHost === 'npmjs') ?        'registry.npmjs.org' : this.options.replaceRegistryHost     if (options.saveType && !saveTypeMap.get(options.saveType)) {      throw new Error(`Invalid saveType ${options.saveType}`)    }    this.cache = resolve(this.options.cache)    this.diff = null    this.path = resolve(this.options.path)    this.scriptsRun = new Set()    timeEnd()  }   // TODO: We should change these to static functions instead  //   of methods for the next major version   // Get the actual nodes corresponding to a root node's child workspaces,  // given a list of workspace names.  workspaceNodes (tree, workspaces) {    const wsMap = tree.workspaces    if (!wsMap) {      log.warn('workspaces', 'filter set, but no workspaces present')      return []    }     const nodes = []    for (const name of workspaces) {      const path = wsMap.get(name)      if (!path) {        log.warn('workspaces', `${name} in filter set, but not in workspaces`)        continue      }       const loc = relpath(tree.realpath, path)      const node = tree.inventory.get(loc)       if (!node) {        log.warn('workspaces', `${name} in filter set, but no workspace folder present`)        continue      }       nodes.push(node)    }     return nodes  }   // returns a set of workspace nodes and all their deps  // TODO why is includeWorkspaceRoot a param?  // TODO why is workspaces a param?  workspaceDependencySet (tree, workspaces, includeWorkspaceRoot) {    const wsNodes = this.workspaceNodes(tree, workspaces)    if (includeWorkspaceRoot) {      for (const edge of tree.edgesOut.values()) {        if (edge.type !== 'workspace' && edge.to) {          wsNodes.push(edge.to)        }      }    }    const wsDepSet = new Set(wsNodes)    const extraneous = new Set()    for (const node of wsDepSet) {      for (const edge of node.edgesOut.values()) {        const dep = edge.to        if (dep) {          wsDepSet.add(dep)          if (dep.isLink) {            wsDepSet.add(dep.target)          }        }      }      for (const child of node.children.values()) {        if (child.extraneous) {          extraneous.add(child)        }      }    }    for (const extra of extraneous) {      wsDepSet.add(extra)    }     return wsDepSet  }   // returns a set of root dependencies, excluding dependencies that are  // exclusively workspace dependencies  excludeWorkspacesDependencySet (tree) {    const rootDepSet = new Set()    depth({      tree,      visit: node => {        for (const { to } of node.edgesOut.values()) {          if (!to || to.isWorkspace) {            continue          }          for (const edgeIn of to.edgesIn.values()) {            if (edgeIn.from.isRoot || rootDepSet.has(edgeIn.from)) {              rootDepSet.add(to)            }          }        }        return node      },      filter: node => node,      getChildren: (node, tree) =>        [...tree.edgesOut.values()].map(edge => edge.to),    })    return rootDepSet  }   async [_setWorkspaces] (node) {    const workspaces = await mapWorkspaces({      cwd: node.path,      pkg: node.package,    })     if (node && workspaces.size) {      node.workspaces = workspaces    }     return node  }   async audit (options = {}) {    this.addTracker('audit')    if (this.options.global) {      throw Object.assign(        new Error('`npm audit` does not support testing globals'),        { code: 'EAUDITGLOBAL' }      )    }     // allow the user to set options on the ctor as well.    // XXX: deprecate separate method options objects.    options = { ...this.options, ...options }     const timeEnd = time.start('audit')    let tree    if (options.packageLock === false) {      // build ideal tree      await this.loadActual(options)      await this.buildIdealTree()      tree = this.idealTree    } else {      tree = await this.loadVirtual()    }    if (this.options.workspaces.length) {      options.filterSet = this.workspaceDependencySet(        tree,        this.options.workspaces,        this.options.includeWorkspaceRoot      )    }    if (!options.workspacesEnabled) {      options.filterSet =        this.excludeWorkspacesDependencySet(tree)    }    this.auditReport = await AuditReport.load(tree, options)    const ret = options.fix ? this.reify(options) : this.auditReport    timeEnd()    this.finishTracker('audit')    return ret  }   // Build an ideal tree (or reuse an already-built one) and return the  // resulting lockfile contents as a string, without writing to disk.  // Useful for callers that want to inspect, diff, or store a lockfile  // somewhere other than the project's `package-lock.json`.  async lockfileString (options = {}) {    await this.buildIdealTree(options)     return this.idealTree.meta.toString(options)  }   async dedupe (options = {}) {    // allow the user to set options on the ctor as well.    // XXX: deprecate separate method options objects.    options = { ...this.options, ...options }    const tree = await this.loadVirtual().catch(() => this.loadActual())    const names = []    for (const name of tree.inventory.query('name')) {      if (tree.inventory.query('name', name).size > 1) {        names.push(name)      }    }    return this.reify({      ...options,      preferDedupe: true,      update: { names },    })  }} module.exports = Arborist