deps: upgrade npm to 3.8.9

Contains the following three npm releases:
https://github.com/npm/npm/releases/tag/v3.8.7
https://github.com/npm/npm/releases/tag/v3.8.8
https://github.com/npm/npm/releases/tag/v3.8.9

PR-URL: https://github.com/nodejs/node/pull/6664
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/deps/npm/node_modules/readable-stream/node_modules/unreachable-branch-transform/node_modules/recast/node_modules/source-map/lib/base64.js b/deps/npm/node_modules/readable-stream/node_modules/unreachable-branch-transform/node_modules/recast/node_modules/source-map/lib/base64.js
new file mode 100644
index 0000000000..dfda6ce186
--- /dev/null
+++ b/deps/npm/node_modules/readable-stream/node_modules/unreachable-branch-transform/node_modules/recast/node_modules/source-map/lib/base64.js
@@ -0,0 +1,68 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+{
+  var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');
+
+  /**
+   * Encode an integer in the range of 0 to 63 to a single base 64 digit.
+   */
+  exports.encode = function (number) {
+    if (0 <= number && number < intToCharMap.length) {
+      return intToCharMap[number];
+    }
+    throw new TypeError("Must be between 0 and 63: " + number);
+  };
+
+  /**
+   * Decode a single base 64 character code digit to an integer. Returns -1 on
+   * failure.
+   */
+  exports.decode = function (charCode) {
+    var bigA = 65;     // 'A'
+    var bigZ = 90;     // 'Z'
+
+    var littleA = 97;  // 'a'
+    var littleZ = 122; // 'z'
+
+    var zero = 48;     // '0'
+    var nine = 57;     // '9'
+
+    var plus = 43;     // '+'
+    var slash = 47;    // '/'
+
+    var littleOffset = 26;
+    var numberOffset = 52;
+
+    // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
+    if (bigA <= charCode && charCode <= bigZ) {
+      return (charCode - bigA);
+    }
+
+    // 26 - 51: abcdefghijklmnopqrstuvwxyz
+    if (littleA <= charCode && charCode <= littleZ) {
+      return (charCode - littleA + littleOffset);
+    }
+
+    // 52 - 61: 0123456789
+    if (zero <= charCode && charCode <= nine) {
+      return (charCode - zero + numberOffset);
+    }
+
+    // 62: +
+    if (charCode == plus) {
+      return 62;
+    }
+
+    // 63: /
+    if (charCode == slash) {
+      return 63;
+    }
+
+    // Invalid base64 digit.
+    return -1;
+  };
+}