Replace The Ruby Racer with Mini Racer

lib/middleman-search/search-index-resource.rb

@@ -32,46 +32,42 @@ def render(opts={}, locs={})
 
       def build_index
         # Build js context
-        context = V8::Context.new
-        context.load(lunr_resource('lunr.js'))
-
+        libs = []
+        libs << lunr_resource('lunr.js')
         if @language != 'en' # English is the default
-          context.load(lunr_resource("lunr.stemmer.support.js"))
-          context.load(lunr_resource("lunr.#{@language}.js"))
-          lunr_lang = context.eval("lunr.#{@language}")
+          libs << lunr_resource("lunr.stemmer.support.js")
+          libs << lunr_resource("lunr.#{@language}.js")
         end
 
-        context.eval('lunr.Index.prototype.indexJson = function () {return JSON.stringify(this.toJSON());}')
+        source = libs.map { |lib| File.read(lib, mode: "rb:UTF-8") }
+        source << "lunr.Index.prototype.indexJson = function () {return JSON.stringify(this.toJSON());};"
 
-        # Register pipeline functions
-        pipeline = context.eval('lunr.Pipeline')
         @pipeline.each do |name, function|
-          context[name] = context.eval("(#{function})")
-          pipeline.registerFunction(context[name], name)
+          source << "lunr.Pipeline.registerFunction((#{function}), '#{name}');"
         end
 
         # Build lunr based on config
-        lunr = context.eval('lunr')
-        lunr_conf = proc do |this|
+        source << "lunr.middlemanSearchIndex = lunr(function () {"
 
-          # Use autogenerated id field as reference
-          this.ref('id')
+        # Use autogenerated id field as reference
+        source << "this.ref('id');"
 
-          # Add functions to pipeline (just registering them isn't enough)
-          @pipeline.each do |name, function|
-            this.pipeline.add(context[name])
-          end
+        # Add functions to pipeline (just registering them isn't enough)
+        @pipeline.each do |name, function|
+          source << "this.pipeline.add(lunr.Pipeline.registeredFunctions.#{name});"
+        end
 
-          # Define fields with boost
-          this.use(lunr_lang) if @language != 'en'
-          @fields.each do |field, opts|
-            next if opts[:index] == false
-            this.field(field, {:boost => opts[:boost]})
-          end
+        # Use language if set
+        source << "this.use(lunr.#{@language});" if @language != 'en'
+
+        # Define fields with boost
+        @fields.each do |field, opts|
+          next if opts[:index] == false
+          source << "this.field('#{field}', { boost: #{opts[:boost]}});"
         end
 
-        # Get lunr index
-        index = lunr.call(lunr_conf)
+        source << "});"
+
 
         # Ref to resource map
         store = Hash.new
@@ -95,7 +91,8 @@ def build_index
 
               @callback.call(to_index, to_store, resource) if @callback
 
-              index.add(to_index.merge(id: id))
+              source << "lunr.middlemanSearchIndex.add(#{to_index.merge(id: id).to_json});"
+
               store[id] = to_store
             end
           rescue => ex
@@ -104,7 +101,9 @@ def build_index
         end
 
         # Generate JSON output
-        "{\"index\": #{index.indexJson()}, \"docs\": #{store.to_json}}"
+        context = ExecJS.compile(source.join("\n"))
+        json = context.eval('lunr.middlemanSearchIndex.indexJson()')
+        "{\"index\": #{json}, \"docs\": #{store.to_json}}"
       end
 
       def binary?

middleman-search.gemspec

@@ -19,9 +19,9 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "middleman-core", [">= 3.2"]
-  spec.add_dependency "therubyracer", ["~> 0.12.2"]
+  spec.add_dependency "mini_racer", ["~> 0.2.6"]
   spec.add_dependency "nokogiri", ["~> 1.6"]
 
-  spec.add_development_dependency "bundler", "~> 1.5"
+  spec.add_development_dependency "bundler", ">= 1.5"
   spec.add_development_dependency "rake"
 end