From 3c483b422f3c6fd82f28cf9c4e6361ea80d40db0 Mon Sep 17 00:00:00 2001
From: Jan Bujak <j@exia.io>
Date: Fri, 7 Dec 2018 16:20:18 +0100
Subject: [PATCH 1/2] Install Node.js on Travis before running tests on
 `wasm32-unknown-unknown`

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index 2f0bb79b8f2..b90e5bcc98b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -129,6 +129,7 @@ matrix:
       install:
         - rustup target add wasm32-unknown-unknown
         - rustup target add wasm32-unknown-emscripten
+        - nvm install 9
         # cargo-web takes ±10 min. to install, and cargo and cargo-update offer
         # no reliable update-or-install command. We ignore updating for now
         # (just drop the Travis' caches when necessary)

From ec55c7707b8ba725be5bc0b04ae7820815b55f20 Mon Sep 17 00:00:00 2001
From: Jan Bujak <j@exia.io>
Date: Fri, 7 Dec 2018 16:21:47 +0100
Subject: [PATCH 2/2] Use precompiled `cargo-web` on Travis

---
 .travis.yml                   |  5 +----
 utils/ci/install_cargo_web.sh | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 4 deletions(-)
 create mode 100755 utils/ci/install_cargo_web.sh

diff --git a/.travis.yml b/.travis.yml
index b90e5bcc98b..4c88a51590e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -130,10 +130,7 @@ matrix:
         - rustup target add wasm32-unknown-unknown
         - rustup target add wasm32-unknown-emscripten
         - nvm install 9
-        # cargo-web takes ±10 min. to install, and cargo and cargo-update offer
-        # no reliable update-or-install command. We ignore updating for now
-        # (just drop the Travis' caches when necessary)
-        - cargo --list | egrep "^\s*web$" -q || cargo install cargo-web
+        - ./utils/ci/install_cargo_web.sh
         - cargo web -V
       addons:
         chrome: stable
diff --git a/utils/ci/install_cargo_web.sh b/utils/ci/install_cargo_web.sh
new file mode 100755
index 00000000000..b35f0691984
--- /dev/null
+++ b/utils/ci/install_cargo_web.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -euo pipefail
+IFS=$'\n\t'
+
+CARGO_WEB_RELEASE=$(curl -L -s -H 'Accept: application/json' https://github.com/koute/cargo-web/releases/latest)
+CARGO_WEB_VERSION=$(echo $CARGO_WEB_RELEASE | sed -e 's/.*"tag_name":"\([^"]*\)".*/\1/')
+CARGO_WEB_URL="https://github.com/koute/cargo-web/releases/download/$CARGO_WEB_VERSION/cargo-web-x86_64-unknown-linux-gnu.gz"
+
+echo "Downloading cargo-web from: $CARGO_WEB_URL"
+curl -L $CARGO_WEB_URL | gzip -d > cargo-web
+chmod +x cargo-web
+
+mkdir -p ~/.cargo/bin
+mv cargo-web ~/.cargo/bin