javascript.mk

   1 # This is free and unencumbered software released into the public
   2 # domain. To the extent possible under law, the author of this file
   3 # waives all copyright and related or neighboring rights to it.
   4
   5 .DELETE_ON_ERROR:
   6
   7 javascript>fallback = $(firstword $(shell command -v $1) $2 $1)
   8
   9 NPM ?= npm
  10 NPMROOT ?= .
  11
  12 npmbindir = $(NPMROOT)/node_modules/.bin
  13 .PRECIOUS: $(npmbindir)/%
  14
  15 from-npm = $(call javascript>fallback,$1,$(npmbindir)/$1)
  16
  17 JSTEST ?= $(npmbindir)/jstest
  18 JSHINT ?= $(call from-npm,jshint)
  19
  20 uglifyjs_npm_package := uglify-js
  21
  22 UGLIFY ?= $(call from-npm,uglifyjs)
  23 UGLIFYFLAGS ?= --comments \
  24                --compress $(UGLIFYCOMPRESSFLAGS) \
  25                --mangle $(UGLIFYMANGLEFLAGS)
  26
  27 JSSTAMPDIR ?= build/stamp
  28 JSHINTDIR ?= $(JSSTAMPDIR)
  29 JSTESTDIR ?= $(JSSTAMPDIR)
  30 JSUGLYDIR ?= .
  31
  32 JSHINTFLAGS += $(if $(JSHINTCONFIG),--config $(JSHINTCONFIG))
  33 JSTESTFLAGS += $(if $(JSTESTFORMAT),--format $(JSTESTFORMAT))
  34 JSTESTFORMAT ?= spec
  35
  36 jshint-stampify = $(patsubst %.js,$(JSHINTDIR)/%.js.lint,$1)
  37 uglify-stampify = $(patsubst %.js,$(JSUGLYDIR)/%.min.js,$1)
  38
  39 javascript>capture-to-target = @echo "$1" && $1 > $@ || (cat $@ && exit 1)
  40
  41 UGLIFY.js = $(UGLIFY) $(UGLIFYFLAGS)
  42 LINT.js = $(JSHINT) $(JSHINTFLAGS)
  43 TEST.js = $(JSTEST) $(JSTESTFLAGS)
  44
  45 $(JSUGLYDIR)/%.min.js: %.js | $(UGLIFY)
  46         @mkdir -p $(@D)
  47         $(UGLIFY.js) < $< > $@
  48
  49 $(JSHINTDIR)/%.js.lint: %.js | $(JSHINT)
  50         @mkdir -p $(@D)
  51         $(LINT.js) $<
  52         @touch $@
  53
  54 $(JSTESTDIR)/%.js.test: %.js | $(JSTEST)
  55         @mkdir -p $(@D)
  56         $(call javascript>capture-to-target,$(TEST.js) $<)
  57
  58 $(npmbindir)/%:
  59         $(NPM) install $(firstword $(value $(@F)_npm_package) $(@F))