Build snippet without script tag for segment integration

Author: allanca

Makefile

@@ -9,6 +9,7 @@ BUILD_DIR = build
 PROJECT = amplitude
 OUT = $(PROJECT).js
 SNIPPET_OUT = $(PROJECT)-snippet.min.js
+SEGMENT_SNIPPET_OUT = $(PROJECT)-segment-snippet.min.js
 MIN_OUT = $(PROJECT).min.js
 MOCHA = $(BINS)/mocha-phantomjs
 
@@ -66,17 +67,21 @@ $(OUT): node_modules $(SRC) version
 	@$(MINIFY) $(OUT) --output $(MIN_OUT)
 
 #
-# Target for minified `amplitude-snippet.js` file. Update README.
+# Target for minified `amplitude-snippet.js` file.
 #
 $(SNIPPET_OUT): $(SRC) $(SNIPPET) version
 	@$(JSHINT) --verbose $(SNIPPET)
-	@$(MINIFY) $(SNIPPET) -m -b max-line-len=80,beautify=false --output $(SNIPPET_OUT)
+	@$(MINIFY) $(SNIPPET) -m -b max-line-len=80,beautify=false | awk 'NF' > $(SNIPPET_OUT)
+
+$(SEGMENT_SNIPPET_OUT): $(SRC) $(SNIPPET) version
+	@grep -Ev "\ba?s\b" $(SNIPPET) | $(MINIFY) -m -b max-line-len=80,beautify=false - \
+		| awk 'NF' > $(SEGMENT_SNIPPET_OUT)
 
 #
 # Target for `tests-build.js` file.
 #
 
-build: $(TESTS) $(OUT) $(SNIPPET_OUT) README.md
+build: $(TESTS) $(OUT) $(SNIPPET_OUT) $(SEGMENT_SNIPPET_OUT) README.md
 	@-mkdir -p build
 	@$(DUO) --development test/tests.js > build/tests.js
 	@$(DUO) --development test/snippet-tests.js > build/snippet-tests.js

amplitude-segment-snippet.min.js

@@ -0,0 +1,3 @@
+(function(e,t){var n=e.amplitude||{};n._q=[];function o(e){n[e]=function(){n._q.push([e].concat(Array.prototype.slice.call(arguments,0)));
+}}var r=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties"];
+for(var s=0;s<r.length;s++){o(r[s])}e.amplitude=n})(window,document);

amplitude-snippet.min.js

@@ -3,4 +3,4 @@ n.async=true;n.src="https://d24n15hnbwhuhn.cloudfront.net/libs/amplitude-2.1.0-m
 var s=t.getElementsByTagName("script")[0];s.parentNode.insertBefore(n,s);r._q=[];
 function a(e){r[e]=function(){r._q.push([e].concat(Array.prototype.slice.call(arguments,0)));
 }}var i=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties"];
-for(var o=0;o<i.length;o++){a(i[o])}e.amplitude=r})(window,document);
+for(var o=0;o<i.length;o++){a(i[o])}e.amplitude=r})(window,document);