proposal for #3: build different patterns independently

Makefile

@@ -1,5 +1,7 @@
-SRC = src/p.js
-UGLY = build/p.min.js
+SRC_DIR = src
+BUILD_DIR = build
+SRC = $(SRC_DIR)/p.js
+UGLY = $(BUILD_DIR)/p.min.js
 UGLIFYJS ?= uglifyjs
 CLEAN += $(UGLY)
 
@@ -13,6 +15,29 @@ $(UGLY): $(SRC)
 $(PRETTY): $(SRC)
 	$(UGLIFYJS) -b $(SRC) > $(UGLY)
 
+# special builds
+COMMONJS = $(BUILD_DIR)/p.commonjs.js
+COMMONJS_POST = src/p.commonjs_post.js
+CLEAN += $(COMMONJS)
+$(COMMONJS): $(SRC) $(COMMONJS_POST)
+	cat $(SRC) $(COMMONJS_POST) > $(COMMONJS)
+
+AMD = $(BUILD_DIR)/p.amd.js
+AMD_MIN = $(BUILD_DIR)/p.amd.min.js
+CLEAN += $(AMD) $(AMD_MIN)
+AMD_POST = src/p.amd_post.js
+$(AMD): $(SRC) $(AMD_POST)
+	cat $(SRC) $(AMD_POST) > $(AMD)
+
+$(AMD_MIN): $(AMD)
+	$(UGLIFYJS) $(AMD) > $(AMD_MIN)
+
+.PHONY: commonjs
+commonjs: $(COMMONJS)
+
+.PHONY: amd
+amd: $(AMD) $(AMD_MIN)
+
 .PHONY: report
 report: $(UGLY)
 	wc -c $(UGLY)
@@ -21,7 +46,7 @@ report: $(UGLY)
 MOCHA ?= mocha
 TESTS = ./test/*.test.js
 .PHONY: test
-test: $(UGLY)
+test: $(COMMONJS)
 	$(MOCHA) $(TESTS)
 
 # -*- packaging -*- #

index.js

@@ -1,2 +1,2 @@
-exports.P = require('./src/p').P;
+exports.P = require('./build/p.commonjs').P;
 exports.version = JSON.parse(require('fs').readFileSync(__dirname + '/package.json')).version;

package.json

@@ -12,6 +12,7 @@
     "mocha": "0.8.1"
   },
   "scripts": {
+    "install": "make commonjs",
     "test": "make test"
   }
 }

src/amd_post.js

@@ -0,0 +1 @@
+define({P: P});

src/p.amd_post.js

@@ -0,0 +1 @@
+define(P);

src/p.commonjs_post.js

@@ -0,0 +1 @@
+exports.P = P;

src/p.js

@@ -44,5 +44,3 @@ var P = (function(slice, prototype, hasOwnProperty, undefined) {
 
   return P;
 })([].slice, 'prototype', ({}).hasOwnProperty);
-
-if (typeof exports !== 'undefined') exports.P = P