Add utility to install js tools

This is a small utility script to install nodejs and npm and yarn for
you.

Change-Id: Iebfadb0d7cfa341f95b4dcd025313a1b8f4d3b55

tools/install-js-tools.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+# Copyright 2017 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+if [ $EUID -ne 0 ] ; then
+    SUDO='sudo -E'
+fi
+
+if type apt-get; then
+    # Install https transport - otherwise apt-get HANGS on https urls
+    # Install curl so the curl commands work
+    # Install gnupg2 so that the apt-key add works
+    $SUDO apt-get update
+    $SUDO apt-get install -y apt-transport-https curl gnupg2
+    # Install recent NodeJS repo
+    curl -sS https://deb.nodesource.com/gpgkey/nodesource.gpg.key | $SUDO apt-key add -
+    echo "deb https://deb.nodesource.com/node_10.x bionic main" | $SUDO tee /etc/apt/sources.list.d/nodesource.list
+    # Install yarn repo
+    curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | $SUDO apt-key add -
+    echo "deb https://dl.yarnpkg.com/debian/ stable main" | $SUDO tee /etc/apt/sources.list.d/yarn.list
+    $SUDO apt-get update
+    DEBIAN_FRONTEND=noninteractive \
+        $SUDO apt-get -q --option "Dpkg::Options::=--force-confold" --assume-yes \
+        install nodejs yarn
+elif type yum; then
+    $SUDO curl https://dl.yarnpkg.com/rpm/yarn.repo -o /etc/yum.repos.d/yarn.repo
+    $SUDO $(dirname $0)/install-js-repos-rpm.sh
+    $SUDO yum -y install nodejs yarn
+elif type zypper; then
+    $SUDO zypper install -y nodejs10 npm10
+    $SUDO npm install yarn
+elif type brew; then
+    brew install nodejs yarn
+else
+    echo "Unsupported platform"
+fi