Add script for installing emscripten

.gitignore

@@ -4,3 +4,4 @@ build
 .clang_complete
 
 /browser.js
+emsdk_portable

.npmignore

@@ -1,3 +1,4 @@
 test
 build
 .gitignore
+emsdk_portable

package.json

@@ -6,19 +6,16 @@
   "browser": "./browser",
   "scripts": {
     "build:node": "node-gyp configure build",
-    "build:browser": "em++ --bind -o browser.js -O3 -std=c++14 -I src/bindings/em -I src/core --pre-js src/bindings/em/prologue.js --post-js src/bindings/em/epilogue.js src/core/*.cc src/bindings/em/*.cc -s TOTAL_MEMORY=134217728 --memory-init-file 0",
-    "build:browser:maybe": "test -f browser.js || test -n \"$CI\" || ! command -v em++ 2>&1 > /dev/null || npm run build:browser",
-    "build:all": "npm run build:node && npm run build:browser",
-    "install": "npm run build:node && npm run build:browser:maybe",
-    "test-native": "script/test-native.js",
+    "build:browser": "script/build-browser-version.sh",
+    "build": "npm run build:node && npm run build:browser",
+    "test:native": "script/test-native.js",
     "test:node": "mocha test/js/*.js",
     "test:browser": "FORCE_BROWSER_FALLBACK=1 mocha test/js/*.js",
-    "test:all": "npm run test:node && npm run test:browser",
-    "test": "npm run test:all",
+    "test": "npm run test:node && npm run test:browser",
     "benchmark": "node benchmark/marker-index.benchmark.js",
-    "prepublish": "npm run standard",
+    "prepublish": "not-in-install && npm run build:browser || in-install",
     "standard": "standard --recursive src test",
-    "ci": "npm run standard && node-gyp rebuild --debug --tests && npm run test"
+    "ci": "script/install-emscripten.sh && npm run standard && node-gyp rebuild --debug --tests && npm run test"
   },
   "repository": {
     "type": "git",
@@ -39,6 +36,7 @@
   },
   "devDependencies": {
     "chai": "^2.0.0",
+    "in-publish": "^2.0.0",
     "mocha": "^2.3.4",
     "random-seed": "^0.2.0",
     "segfault-handler": "^1.0.0",

script/build-browser-version.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+EM_COMPILER_PATH=$(find ./emsdk_portable/emscripten -name em++ | head -n1)
+
+ONEONEONEONE
+echo "Running ${EM_COMPILER_PATH}"
+${EM_COMPILER_PATH}                     \
+  --bind                                \
+  -o browser.js                         \
+  -O3                                   \
+  -std=c++14                            \
+  -I src/bindings/em                    \
+  -I src/core                           \
+  --pre-js src/bindings/em/prologue.js  \
+  --post-js src/bindings/em/epilogue.js \
+  src/core/*.cc                         \
+  src/bindings/em/*.cc                  \
+  -s TOTAL_MEMORY=134217728             \
+  --memory-init-file 0                  \

script/install-emscripten.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+EMSCRIPTEN_DOWNLOAD_URL='https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz'
+EMSDK_PATH="./emsdk_portable/emsdk"
+
+if [ ! -f $EMSDK_PATH ]; then
+  echo 'Downloading emscripten SDK installer...'
+  curl $EMSCRIPTEN_DOWNLOAD_URL | tar xz
+fi
+
+echo 'Installing emscripten SDK...'
+
+$EMSDK_PATH update
+$EMSDK_PATH install latest
+$EMSDK_PATH activate latest