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, 24 insertions, 0 deletions

diff --git a/deps/npm/node_modules/readable-stream/node_modules/unreachable-branch-transform/node_modules/esmangle-evaluator/README.md b/deps/npm/node_modules/readable-stream/node_modules/unreachable-branch-transform/node_modules/esmangle-evaluator/README.md
new file mode 100644
index 0000000000..feb55dbb01
--- /dev/null
+++ b/deps/npm/node_modules/readable-stream/node_modules/unreachable-branch-transform/node_modules/esmangle-evaluator/README.md
@@ -0,0 +1,24 @@
+esmangle-evaluator
+==================
+
+[`esmangle`](https://github.com/estools/esmangle)'s `evaluator.js` as a standalone module.
+
+`evaluator.js` is an unmodified copy of the [original](https://github.com/Constellation/esmangle/blob/7e4ee597/lib/evaluator.js).
+
+`common.js` is a stub of the [original](https://github.com/Constellation/esmangle/blob/7e4ee597/lib/common.js) with a few helpers/constants required by `evaluator.js`.
+
+## Exports
+
+```js
+{
+  constant: {
+    doBinary: [Function: doBinary],
+    doUnary: [Function: doUnary],
+    doLogical: [Function: doLogical],
+    evaluate: [Function: getConstant],
+    isConstant: [Function: isConstant]
+  },
+  hasSideEffect: [Function: hasSideEffect],
+  booleanCondition: [Function: booleanCondition]
+}
+```