1 files changed, 103 insertions, 0 deletions
diff --git a/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/from2/index.js b/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/from2/index.js
new file mode 100644
index 0000000000..cb200c610a
--- /dev/null
+++ b/deps/npm/node_modules/cacache/node_modules/mississippi/node_modules/from2/index.js
@@ -0,0 +1,103 @@
+var Readable = require('readable-stream').Readable
+var inherits = require('inherits')
+
+module.exports = from2
+
+from2.ctor = ctor
+from2.obj = obj
+
+var Proto = ctor()
+
+function toFunction(list) {
+  list = list.slice()
+  return function (_, cb) {
+    var err = null
+    var item = list.length ? list.shift() : null
+    if (item instanceof Error) {
+      err = item
+      item = null
+    }
+
+    cb(err, item)
+  }
+}
+
+function from2(opts, read) {
+  if (typeof opts !== 'object' || Array.isArray(opts)) {
+    read = opts
+    opts = {}
+  }
+
+  var rs = new Proto(opts)
+  rs._from = Array.isArray(read) ? toFunction(read) : (read || noop)
+  return rs
+}
+
+function ctor(opts, read) {
+  if (typeof opts === 'function') {
+    read = opts
+    opts = {}
+  }
+
+  opts = defaults(opts)
+
+  inherits(Class, Readable)
+  function Class(override) {
+    if (!(this instanceof Class)) return new Class(override)
+    this._reading = false
+    this._callback = check
+    this.destroyed = false
+    Readable.call(this, override || opts)
+
+    var self = this
+    var hwm = this._readableState.highWaterMark
+
+    function check(err, data) {
+      if (self.destroyed) return
+      if (err) return self.destroy(err)
+      if (data === null) return self.push(null)
+      self._reading = false
+      if (self.push(data)) self._read(hwm)
+    }
+  }
+
+  Class.prototype._from = read || noop
+  Class.prototype._read = function(size) {
+    if (this._reading || this.destroyed) return
+    this._reading = true
+    this._from(size, this._callback)
+  }
+
+  Class.prototype.destroy = function(err) {
+    if (this.destroyed) return
+    this.destroyed = true
+
+    var self = this
+    process.nextTick(function() {
+      if (err) self.emit('error', err)
+      self.emit('close')
+    })
+  }
+
+  return Class
+}
+
+function obj(opts, read) {
+  if (typeof opts === 'function' || Array.isArray(opts)) {
+    read = opts
+    opts = {}
+  }
+
+  opts = defaults(opts)
+  opts.objectMode = true
+  opts.highWaterMark = 16
+
+  return from2(opts, read)
+}
+
+function noop () {}
+
+function defaults(opts) {
+  opts = opts || {}
+  return opts
+}