Emit compile errors instead of crashing.

index.js

@@ -59,7 +59,13 @@ function hbsfy(file, opts) {
     buffer += chunk.toString();
   },
   function() {
-    var js = precompiler.precompile(buffer, opts && opts.precompilerOptions);
+    var js;
+    try {
+      js = precompiler.precompile(buffer, opts && opts.precompilerOptions);
+    } catch (e) {
+      this.emit('error', e);
+      return this.queue(null);
+    }
     // Compile only with the runtime dependency.
     var compiled = "// hbsfy compiled Handlebars template\n";
     compiled += "var HandlebarsCompiler = " + compiler + ";\n";

test/error.hbs

@@ -0,0 +1 @@
+{{#error}}

test/error_test.js

@@ -0,0 +1,12 @@
+
+var fs = require("fs");
+var hbsfy = require("hbsfy");
+
+var templatePath = __dirname + "/error.hbs";
+
+fs.createReadStream(templatePath)
+.pipe(hbsfy(templatePath))
+.on('error', function () {
+  // Error handled, so we will not crash.
+});
+