1 files changed, 0 insertions, 125 deletions
diff --git a/node_modules/tar/lib/path-reservations.js b/node_modules/tar/lib/path-reservations.js
deleted file mode 100644
index 3cf0c2c..0000000
--- a/node_modules/tar/lib/path-reservations.js
+++ /dev/null
@@ -1,125 +0,0 @@
-// A path exclusive reservation system
-// reserve([list, of, paths], fn)
-// When the fn is first in line for all its paths, it
-// is called with a cb that clears the reservation.
-//
-// Used by async unpack to avoid clobbering paths in use,
-// while still allowing maximal safe parallelization.
-
-const assert = require('assert')
-
-module.exports = () => {
-  // path => [function or Set]
-  // A Set object means a directory reservation
-  // A fn is a direct reservation on that path
-  const queues = new Map()
-
-  // fn => {paths:[path,...], dirs:[path, ...]}
-  const reservations = new Map()
-
-  // return a set of parent dirs for a given path
-  const { join } = require('path')
-  const getDirs = path =>
-    join(path).split(/[\\\/]/).slice(0, -1).reduce((set, path) =>
-      set.length ? set.concat(join(set[set.length-1], path)) : [path], [])
-
-  // functions currently running
-  const running = new Set()
-
-  // return the queues for each path the function cares about
-  // fn => {paths, dirs}
-  const getQueues = fn => {
-    const res = reservations.get(fn)
-    /* istanbul ignore if - unpossible */
-    if (!res)
-      throw new Error('function does not have any path reservations')
-    return {
-      paths: res.paths.map(path => queues.get(path)),
-      dirs: [...res.dirs].map(path => queues.get(path)),
-    }
-  }
-
-  // check if fn is first in line for all its paths, and is
-  // included in the first set for all its dir queues
-  const check = fn => {
-    const {paths, dirs} = getQueues(fn)
-    return paths.every(q => q[0] === fn) &&
-      dirs.every(q => q[0] instanceof Set && q[0].has(fn))
-  }
-
-  // run the function if it's first in line and not already running
-  const run = fn => {
-    if (running.has(fn) || !check(fn))
-      return false
-    running.add(fn)
-    fn(() => clear(fn))
-    return true
-  }
-
-  const clear = fn => {
-    if (!running.has(fn))
-      return false
-
-    const { paths, dirs } = reservations.get(fn)
-    const next = new Set()
-
-    paths.forEach(path => {
-      const q = queues.get(path)
-      assert.equal(q[0], fn)
-      if (q.length === 1)
-        queues.delete(path)
-      else {
-        q.shift()
-        if (typeof q[0] === 'function')
-          next.add(q[0])
-        else
-          q[0].forEach(fn => next.add(fn))
-      }
-    })
-
-    dirs.forEach(dir => {
-      const q = queues.get(dir)
-      assert(q[0] instanceof Set)
-      if (q[0].size === 1 && q.length === 1) {
-        queues.delete(dir)
-      } else if (q[0].size === 1) {
-        q.shift()
-
-        // must be a function or else the Set would've been reused
-        next.add(q[0])
-      } else
-        q[0].delete(fn)
-    })
-    running.delete(fn)
-
-    next.forEach(fn => run(fn))
-    return true
-  }
-
-  const reserve = (paths, fn) => {
-    const dirs = new Set(
-      paths.map(path => getDirs(path)).reduce((a, b) => a.concat(b))
-    )
-    reservations.set(fn, {dirs, paths})
-    paths.forEach(path => {
-      const q = queues.get(path)
-      if (!q)
-        queues.set(path, [fn])
-      else
-        q.push(fn)
-    })
-    dirs.forEach(dir => {
-      const q = queues.get(dir)
-      if (!q)
-        queues.set(dir, [new Set([fn])])
-      else if (q[q.length-1] instanceof Set)
-        q[q.length-1].add(fn)
-      else
-        q.push(new Set([fn]))
-    })
-
-    return run(fn)
-  }
-
-  return { check, reserve }
-}