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ðŸ“ ..
ðŸ“„ access-error.js(202 B)
ðŸ“ action
ðŸ“„ actions.js(5.51 KB)
ðŸ“„ and-add-parent-to-errors.js(324 B)
ðŸ“„ and-finish-tracker.js(360 B)
ðŸ“„ and-ignore-errors.js(204 B)
ðŸ“„ audit.js(8.24 KB)
ðŸ“„ check-permissions.js(1.85 KB)
ðŸ“„ copy-tree.js(770 B)
ðŸ“„ decompose-actions.js(2.18 KB)
ðŸ“„ deps.js(29.15 KB)
ðŸ“„ diff-trees.js(9.12 KB)
ðŸ“„ exists.js(775 B)
ðŸ“„ flatten-tree.js(1021 B)
ðŸ“„ get-requested.js(440 B)
ðŸ“„ has-modern-meta.js(702 B)
ðŸ“„ inflate-bundled.js(628 B)
ðŸ“„ inflate-shrinkwrap.js(8.04 KB)
ðŸ“„ is-dev-dep.js(175 B)
ðŸ“„ is-extraneous.js(618 B)
ðŸ“„ is-fs-access-available.js(763 B)
ðŸ“„ is-only-dev.js(1.21 KB)
ðŸ“„ is-only-optional.js(600 B)
ðŸ“„ is-opt-dep.js(185 B)
ðŸ“„ is-prod-dep.js(172 B)
ðŸ“„ module-staging-path.js(259 B)
ðŸ“„ mutate-into-logical-tree.js(4.52 KB)
ðŸ“„ node.js(1.85 KB)
ðŸ“„ read-shrinkwrap.js(3.74 KB)
ðŸ“„ realize-shrinkwrap-specifier.js(621 B)
ðŸ“„ report-optional-failure.js(1.02 KB)
ðŸ“„ save.js(5.7 KB)
ðŸ“„ update-package-json.js(1.87 KB)
ðŸ“„ validate-args.js(2.45 KB)
ðŸ“„ validate-tree.js(3.1 KB)
ðŸ“„ writable.js(1 KB)

Editing: is-only-dev.js

'use strict'
module.exports = isOnlyDev

const moduleName = require('../utils/module-name.js')
const isDevDep = require('./is-dev-dep.js')
const isProdDep = require('./is-prod-dep.js')

// Returns true if the module `node` is only required direcctly as a dev
// dependency of the top level or transitively _from_ top level dev
// dependencies.
// Dual mode modules (that are both dev AND prod) should return false.
function isOnlyDev (node, seen) {
  if (!seen) seen = new Set()
  return node.requiredBy.length && node.requiredBy.every(andIsOnlyDev(moduleName(node), seen))
}

// There is a known limitation with this implementation: If a dependency is
// ONLY required by cycles that are detached from the top level then it will
// ultimately return true.
//
// This is ok though: We don't allow shrinkwraps with extraneous deps and
// these situation is caught by the extraneous checker before we get here.
function andIsOnlyDev (name, seen) {
  return function (req) {
    const isDev = isDevDep(req, name)
    const isProd = isProdDep(req, name)
    if (req.isTop) {
      return isDev && !isProd
    } else {
      if (seen.has(req)) return true
      seen = new Set(seen)
      seen.add(req)
      return isOnlyDev(req, seen)
    }
  }
}

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Editing: is-only-dev.js

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