lodash: Add a Makefile and pre/post compiling scripts. [jddalton]

Former-commit-id: 70c1881b0b9a7fa8a51294780b97516144682649

Makefile

@@ -0,0 +1,37 @@
+BUILD_DIR = ${CURDIR}/build
+DIST_DIR = ${CURDIR}/dist
+VENDOR_DIR = ${CURDIR}/vendor
+
+JS_ENGINE ?= `which node nodejs 2>/dev/null`
+
+LODASH_TMP = ${BUILD_DIR}/lodash.tmp.js
+LODASH_COMPILER = ${DIST_DIR}/lodash.compiler.js
+LODASH_UGLIFY = ${DIST_DIR}/lodash.uglify.js
+
+UGLIFY = ${VENDOR_DIR}/uglifyjs/bin/uglifyjs
+CLOSURE_COMPILER = java -jar ${VENDOR_DIR}/closure-compiler/compiler.jar
+
+PRE_COMPILER = ${JS_ENGINE} ${BUILD_DIR}/pre-compile.js
+POST_COMPILER = ${JS_ENGINE} ${BUILD_DIR}/post-compile.js
+
+core:
+	mkdir -p ${DIST_DIR}
+	cp ${CURDIR}/lodash.js ${LODASH_TMP}
+	${PRE_COMPILER} ${LODASH_TMP}
+
+	${CLOSURE_COMPILER} \
+	  --compilation_level=ADVANCED_OPTIMIZATIONS \
+	  --language_in=ECMASCRIPT5_STRICT \
+	  --warning_level=QUIET \
+	  --js ${LODASH_TMP} \
+	  --js_output_file ${LODASH_COMPILER}
+	${POST_COMPILER} ${LODASH_COMPILER}
+
+	${UGLIFY} \
+	  --unsafe \
+      --max-line-len 500 \
+	  -o ${LODASH_UGLIFY} \
+	  ${LODASH_TMP}
+	${POST_COMPILER} ${LODASH_UGLIFY}
+
+	rm -f ${LODASH_TMP}