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?? access.js(6.08 KB)
?? adduser.js(1.32 KB)
?? audit.js(13.86 KB)
?? bugs.js(815 B)
?? cache.js(7.07 KB)
?? ci.js(3.51 KB)
?? completion.js(8.73 KB)
?? config.js(10.04 KB)
?? dedupe.js(1.4 KB)
?? deprecate.js(2.03 KB)
?? diff.js(8.12 KB)
?? dist-tag.js(5.45 KB)
?? docs.js(447 B)
?? doctor.js(11.51 KB)
?? edit.js(2 KB)
?? exec.js(2.54 KB)
?? explain.js(3.55 KB)
?? explore.js(2.3 KB)
?? find-dupes.js(622 B)
?? fund.js(6.51 KB)
?? get.js(524 B)
?? help-search.js(5.49 KB)
?? help.js(3.54 KB)
?? hook.js(3.77 KB)
?? init.js(6.9 KB)
?? install-ci-test.js(373 B)
?? install-test.js(370 B)
?? install.js(5.11 KB)
?? link.js(5.15 KB)
?? ll.js(234 B)
?? login.js(1.32 KB)
?? logout.js(1.3 KB)
?? ls.js(16.73 KB)
?? org.js(4.14 KB)
?? outdated.js(8.76 KB)
?? owner.js(5.91 KB)
?? pack.js(2.37 KB)
?? ping.js(917 B)
?? pkg.js(3.5 KB)
?? prefix.js(303 B)
?? profile.js(11.19 KB)
?? prune.js(779 B)
?? publish.js(6.5 KB)
?? query.js(2.9 KB)
?? rebuild.js(2.14 KB)
?? repo.js(1.24 KB)
?? restart.js(310 B)
?? root.js(258 B)
?? run-script.js(6.81 KB)
?? search.js(2.68 KB)
?? set.js(572 B)
?? shrinkwrap.js(2.64 KB)
?? star.js(1.87 KB)
?? stars.js(1.03 KB)
?? start.js(300 B)
?? stop.js(295 B)
?? team.js(4.44 KB)
?? test.js(295 B)
?? token.js(6.64 KB)
?? uninstall.js(1.51 KB)
?? unpublish.js(4.54 KB)
?? unstar.js(182 B)
?? update.js(1.71 KB)
?? version.js(3.58 KB)
?? view.js(14.38 KB)
?? whoami.js(474 B)

Editing: ls.js

const { resolve, relative, sep } = require('path')
const relativePrefix = `.${sep}`
const { EOL } = require('os')

const archy = require('archy')
const Arborist = require('@npmcli/arborist')
const { breadth } = require('treeverse')
const npa = require('npm-package-arg')

const completion = require('../utils/completion/installed-deep.js')

const _depth = Symbol('depth')
const _dedupe = Symbol('dedupe')
const _filteredBy = Symbol('filteredBy')
const _include = Symbol('include')
const _invalid = Symbol('invalid')
const _name = Symbol('name')
const _missing = Symbol('missing')
const _parent = Symbol('parent')
const _problems = Symbol('problems')
const _required = Symbol('required')
const _type = Symbol('type')
const ArboristWorkspaceCmd = require('../arborist-cmd.js')
const localeCompare = require('@isaacs/string-locale-compare')('en')

class LS extends ArboristWorkspaceCmd {
  static description = 'List installed packages'
  static name = 'ls'
  static usage = ['<package-spec>']
  static params = [
    'all',
    'json',
    'long',
    'parseable',
    'global',
    'depth',
    'omit',
    'link',
    'package-lock-only',
    'unicode',
    ...super.params,
  ]

// TODO
  /* istanbul ignore next */
  async completion (opts) {
    return completion(this.npm, opts)
  }

async exec (args) {
    const all = this.npm.config.get('all')
    const chalk = this.npm.chalk
    const depth = this.npm.config.get('depth')
    const global = this.npm.global
    const json = this.npm.config.get('json')
    const link = this.npm.config.get('link')
    const long = this.npm.config.get('long')
    const omit = this.npm.flatOptions.omit
    const parseable = this.npm.config.get('parseable')
    const unicode = this.npm.config.get('unicode')
    const packageLockOnly = this.npm.config.get('package-lock-only')
    const workspacesEnabled = this.npm.flatOptions.workspacesEnabled

const path = global ? resolve(this.npm.globalDir, '..') : this.npm.prefix

const arb = new Arborist({
      global,
      ...this.npm.flatOptions,
      legacyPeerDeps: false,
      path,
    })
    const tree = await this.initTree({ arb, args, packageLockOnly })

// filters by workspaces nodes when using -w <workspace-name>
    // We only have to filter the first layer of edges, so we don't
    // explore anything that isn't part of the selected workspace set.
    let wsNodes
    if (this.workspaceNames && this.workspaceNames.length) {
      wsNodes = arb.workspaceNodes(tree, this.workspaceNames)
    }
    const filterBySelectedWorkspaces = edge => {
      if (!workspacesEnabled
        && edge.from.isProjectRoot
        && edge.to.isWorkspace
      ) {
        return false
      }

if (!wsNodes || !wsNodes.length) {
        return true
      }

if (this.npm.flatOptions.includeWorkspaceRoot
          && edge.to && !edge.to.isWorkspace) {
        return true
      }

if (edge.from.isProjectRoot) {
        return (edge.to
          && edge.to.isWorkspace
          && wsNodes.includes(edge.to.target))
      }

return true
    }

const seenItems = new Set()
    const seenNodes = new Map()
    const problems = new Set()

// defines special handling of printed depth when filtering with args
    const filterDefaultDepth = depth === null ? Infinity : depth
    const depthToPrint = (all || args.length)
      ? filterDefaultDepth
      : (depth || 0)

// add root node of tree to list of seenNodes
    seenNodes.set(tree.path, tree)

// tree traversal happens here, using treeverse.breadth
    const result = await breadth({
      tree,
      // recursive method, `node` is going to be the current elem (starting from
      // the `tree` obj) that was just visited in the `visit` method below
      // `nodeResult` is going to be the returned `item` from `visit`
      getChildren (node, nodeResult) {
        const seenPaths = new Set()
        const workspace = node.isWorkspace
        const currentDepth = workspace ? 0 : node[_depth]
        const shouldSkipChildren =
          !(node instanceof Arborist.Node) || (currentDepth > depthToPrint)
        return (shouldSkipChildren)
          ? []
          : [...(node.target).edgesOut.values()]
            .filter(filterBySelectedWorkspaces)
            .filter(currentDepth === 0 ? filterByEdgesTypes({
              link,
              omit,
            }) : () => true)
            .map(mapEdgesToNodes({ seenPaths }))
            .concat(appendExtraneousChildren({ node, seenPaths }))
            .sort(sortAlphabetically)
            .map(augmentNodesWithMetadata({
              args,
              currentDepth,
              nodeResult,
              seenNodes,
            }))
      },
      // visit each `node` of the `tree`, returning an `item` - these are
      // the elements that will be used to build the final output
      visit (node) {
        node[_problems] = getProblems(node, { global })

const item = json
          ? getJsonOutputItem(node, { global, long })
          : parseable
            ? null
            : getHumanOutputItem(node, { args, chalk, global, long })

// loop through list of node problems to add them to global list
        if (node[_include]) {
          for (const problem of node[_problems]) {
            problems.add(problem)
          }
        }

seenItems.add(item)

// return a promise so we don't blow the stack
        return Promise.resolve(item)
      },
    })

// handle the special case of a broken package.json in the root folder
    const [rootError] = tree.errors.filter(e =>
      e.code === 'EJSONPARSE' && e.path === resolve(path, 'package.json'))

this.npm.outputBuffer(
      json ? jsonOutput({ path, problems, result, rootError, seenItems }) :
      parseable ? parseableOutput({ seenNodes, global, long }) :
      humanOutput({ chalk, result, seenItems, unicode })
    )

// if filtering items, should exit with error code on no results
    if (result && !result[_include] && args.length) {
      process.exitCode = 1
    }

if (rootError) {
      throw Object.assign(
        new Error('Failed to parse root package.json'),
        { code: 'EJSONPARSE' }
      )
    }

const shouldThrow = problems.size &&
      ![...problems].every(problem => problem.startsWith('extraneous:'))

if (shouldThrow) {
      throw Object.assign(
        new Error([...problems].join(EOL)),
        { code: 'ELSPROBLEMS' }
      )
    }
  }

async initTree ({ arb, args, packageLockOnly }) {
    const tree = await (
      packageLockOnly
        ? arb.loadVirtual()
        : arb.loadActual()
    )

tree[_include] = args.length === 0
    tree[_depth] = 0

return tree
  }
}
module.exports = LS

const isGitNode = (node) => {
  if (!node.resolved) {
    return
  }

try {
    const { type } = npa(node.resolved)
    return type === 'git' || type === 'hosted'
  } catch (err) {
    return false
  }
}

const isOptional = (node) =>
  node[_type] === 'optional' || node[_type] === 'peerOptional'

const isExtraneous = (node, { global }) =>
  node.extraneous && !global

const getProblems = (node, { global }) => {
  const problems = new Set()

if (node[_missing] && !isOptional(node)) {
    problems.add(`missing: ${node.pkgid}, required by ${node[_missing]}`)
  }

if (node[_invalid]) {
    problems.add(`invalid: ${node.pkgid} ${node.path}`)
  }

if (isExtraneous(node, { global })) {
    problems.add(`extraneous: ${node.pkgid} ${node.path}`)
  }

return problems
}

// annotates _parent and _include metadata into the resulting
// item obj allowing for filtering out results during output
const augmentItemWithIncludeMetadata = (node, item) => {
  item[_parent] = node[_parent]
  item[_include] = node[_include]

// append current item to its parent.nodes which is the
  // structure expected by archy in order to print tree
  if (node[_include]) {
    // includes all ancestors of included node
    let p = node[_parent]
    while (p) {
      p[_include] = true
      p = p[_parent]
    }
  }

return item
}

const getHumanOutputItem = (node, { args, chalk, global, long }) => {
  const { pkgid, path } = node
  const workspacePkgId = chalk.green(pkgid)
  let printable = node.isWorkspace ? workspacePkgId : pkgid

// special formatting for top-level package name
  if (node.isRoot) {
    const hasNoPackageJson = !Object.keys(node.package).length
    if (hasNoPackageJson || global) {
      printable = path
    } else {
      printable += `${long ? EOL : ' '}${path}`
    }
  }

const highlightDepName = args.length && node[_filteredBy]
  const missingColor = isOptional(node)
    ? chalk.yellow.bgBlack
    : chalk.red.bgBlack
  const missingMsg = `UNMET ${isOptional(node) ? 'OPTIONAL ' : ''}DEPENDENCY`
  const targetLocation = node.root
    ? relative(node.root.realpath, node.realpath)
    : node.targetLocation
  const invalid = node[_invalid]
    ? `invalid: ${node[_invalid]}`
    : ''
  const label =
    (
      node[_missing]
        ? missingColor(missingMsg) + ' '
        : ''
    ) +
    `${highlightDepName ? chalk.yellow.bgBlack(printable) : printable}` +
    (
      node[_dedupe]
        ? ' ' + chalk.gray('deduped')
        : ''
    ) +
    (
      invalid
        ? ' ' + chalk.red.bgBlack(invalid)
        : ''
    ) +
    (
      isExtraneous(node, { global })
        ? ' ' + chalk.green.bgBlack('extraneous')
        : ''
    ) +
    (
      node.overridden
        ? ' ' + chalk.gray('overridden')
        : ''
    ) +
    (isGitNode(node) ? ` (${node.resolved})` : '') +
    (node.isLink ? ` -> ${relativePrefix}${targetLocation}` : '') +
    (long ? `${EOL}${node.package.description || ''}` : '')

return augmentItemWithIncludeMetadata(node, { label, nodes: [] })
}

const getJsonOutputItem = (node, { global, long }) => {
  const item = {}

if (node.version) {
    item.version = node.version
  }

if (node.resolved) {
    item.resolved = node.resolved
  }

// if the node is the project root, do not add the overridden flag. the project root can't be
  // overridden anyway, and if we add the flag it causes undesirable behavior when `npm ls --json`
  // is ran in an empty directory since we end up printing an object with only an overridden prop
  if (!node.isProjectRoot) {
    item.overridden = node.overridden
  }

item[_name] = node.name

// special formatting for top-level package name
  const hasPackageJson =
    node && node.package && Object.keys(node.package).length
  if (node.isRoot && hasPackageJson) {
    item.name = node.package.name || node.name
  }

if (long && !node[_missing]) {
    item.name = item[_name]
    const { dependencies, ...packageInfo } = node.package
    Object.assign(item, packageInfo)
    item.extraneous = false
    item.path = node.path
    item._dependencies = {
      ...node.package.dependencies,
      ...node.package.optionalDependencies,
    }
    item.devDependencies = node.package.devDependencies || {}
    item.peerDependencies = node.package.peerDependencies || {}
  }

// augment json output items with extra metadata
  if (isExtraneous(node, { global })) {
    item.extraneous = true
  }

if (node[_invalid]) {
    item.invalid = node[_invalid]
  }

if (node[_missing] && !isOptional(node)) {
    item.required = node[_required]
    item.missing = true
  }
  if (node[_include] && node[_problems] && node[_problems].size) {
    item.problems = [...node[_problems]]
  }

return augmentItemWithIncludeMetadata(node, item)
}

const filterByEdgesTypes = ({ link, omit }) => (edge) => {
  for (const omitType of omit) {
    if (edge[omitType]) {
      return false
    }
  }
  return link ? edge.to && edge.to.isLink : true
}

const appendExtraneousChildren = ({ node, seenPaths }) =>
  // extraneous children are not represented
  // in edges out, so here we add them to the list:
  [...node.children.values()]
    .filter(i => !seenPaths.has(i.path) && i.extraneous)

const mapEdgesToNodes = ({ seenPaths }) => (edge) => {
  let node = edge.to

// if the edge is linking to a missing node, we go ahead
  // and create a new obj that will represent the missing node
  if (edge.missing || (edge.optional && !node)) {
    const { name, spec } = edge
    const pkgid = `${name}@${spec}`
    node = { name, pkgid, [_missing]: edge.from.pkgid }
  }

// keeps track of a set of seen paths to avoid the edge case in which a tree
  // item would appear twice given that it's a children of an extraneous item,
  // so it's marked extraneous but it will ALSO show up in edgesOuts of
  // its parent so it ends up as two diff nodes if we don't track it
  if (node.path) {
    seenPaths.add(node.path)
  }

node[_required] = edge.spec || '*'
  node[_type] = edge.type

if (edge.invalid) {
    const spec = JSON.stringify(node[_required])
    const from = edge.from.location || 'the root project'
    node[_invalid] = (node[_invalid] ? node[_invalid] + ', ' : '') +
      (`${spec} from ${from}`)
  }

return node
}

const filterByPositionalArgs = (args, { node }) =>
  args.length > 0 ? args.some(
    (spec) => (node.satisfies && node.satisfies(spec))
  ) : true

const augmentNodesWithMetadata = ({
  args,
  currentDepth,
  nodeResult,
  seenNodes,
}) => (node) => {
  // if the original edge was a deduped dep, treeverse will fail to
  // revisit that node in tree traversal logic, so we make it so that
  // we have a diff obj for deduped nodes:
  if (seenNodes.has(node.path)) {
    const { realpath, root } = node
    const targetLocation = root ? relative(root.realpath, realpath)
      : node.targetLocation
    node = {
      name: node.name,
      version: node.version,
      pkgid: node.pkgid,
      package: node.package,
      path: node.path,
      isLink: node.isLink,
      realpath: node.realpath,
      targetLocation,
      [_type]: node[_type],
      [_invalid]: node[_invalid],
      [_missing]: node[_missing],
      // if it's missing, it's not deduped, it's just missing
      [_dedupe]: !node[_missing],
    }
  } else {
    // keeps track of already seen nodes in order to check for dedupes
    seenNodes.set(node.path, node)
  }

// _parent is going to be a ref to a treeverse-visited node (returned from
  // getHumanOutputItem, getJsonOutputItem, etc) so that we have an easy
  // shortcut to place new nodes in their right place during tree traversal
  node[_parent] = nodeResult
  // _include is the property that allow us to filter based on position args
  // e.g: `npm ls foo`, `npm ls simple-output@2`
  // _filteredBy is used to apply extra color info to the item that
  // was used in args in order to filter
  node[_filteredBy] = node[_include] =
    filterByPositionalArgs(args, { node: seenNodes.get(node.path) })
  // _depth keeps track of how many levels deep tree traversal currently is
  // so that we can `npm ls --depth=1`
  node[_depth] = currentDepth + 1

return node
}

const sortAlphabetically = ({ pkgid: a }, { pkgid: b }) => localeCompare(a, b)

const humanOutput = ({ chalk, result, seenItems, unicode }) => {
  // we need to traverse the entire tree in order to determine which items
  // should be included (since a nested transitive included dep will make it
  // so that all its ancestors should be displayed)
  // here is where we put items in their expected place for archy output
  for (const item of seenItems) {
    if (item[_include] && item[_parent]) {
      item[_parent].nodes.push(item)
    }
  }

if (!result.nodes.length) {
    result.nodes = ['(empty)']
  }

const archyOutput = archy(result, '', { unicode })
  return chalk.reset(archyOutput)
}

const jsonOutput = ({ path, problems, result, rootError, seenItems }) => {
  if (problems.size) {
    result.problems = [...problems]
  }

if (rootError) {
    result.problems = [
      ...(result.problems || []),
      ...[`error in ${path}: Failed to parse root package.json`],
    ]
    result.invalid = true
  }

// we need to traverse the entire tree in order to determine which items
  // should be included (since a nested transitive included dep will make it
  // so that all its ancestors should be displayed)
  // here is where we put items in their expected place for json output
  for (const item of seenItems) {
    // append current item to its parent item.dependencies obj in order
    // to provide a json object structure that represents the installed tree
    if (item[_include] && item[_parent]) {
      if (!item[_parent].dependencies) {
        item[_parent].dependencies = {}
      }

item[_parent].dependencies[item[_name]] = item
    }
  }

return JSON.stringify(result, null, 2)
}

const parseableOutput = ({ global, long, seenNodes }) => {
  let out = ''
  for (const node of seenNodes.values()) {
    if (node.path && node[_include]) {
      out += node.path
      if (long) {
        out += `:${node.pkgid}`
        out += node.path !== node.realpath ? `:${node.realpath}` : ''
        out += isExtraneous(node, { global }) ? ':EXTRANEOUS' : ''
        out += node[_invalid] ? ':INVALID' : ''
        out += node.overridden ? ':OVERRIDDEN' : ''
      }
      out += EOL
    }
  }
  return out.trim()
}

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Editing: ls.js

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