fix

book/node_modules/front-matter/Makefile

@@ -0,0 +1,70 @@
+MAKEFLAGS += --warn-undefined-variables
+PATH := node_modules/.bin:$(PATH)
+SHELL := /bin/bash
+
+.SHELLFLAGS := -eu -o pipefail -c
+.DEFAULT_GOAL := all
+.DELETE_ON_ERROR:
+.SUFFIXES:
+
+TEST ?= node
+version ?= patch
+
+node_modules: package.json
+	@npm prune
+	@npm install
+	@touch node_modules
+
+.PHONY: clean
+clean:
+	@$(RM) -fr node_modules
+	@$(RM) -fr npm-debug.log
+	@$(RM) -fr coverage
+
+.PHONY: fmt
+fmt: node_modules
+	@standard-format -w
+
+.PHONY: lint
+lint: node_modules
+	@standard
+
+.PHONY: test
+test: lint
+	@if [ "$(TEST)" = "browser" ]; \
+		then make test-browser; \
+		else make test-node; \
+	fi
+
+.PHONY: test-node
+test-node: node_modules
+	tape test/index.js
+
+.PHONY: test-browser
+test-browser: node_modules
+ifeq ($(TRAVIS_PULL_REQUEST),true)
+	zuul -- test/index.js
+endif
+
+.PHONY: zuul
+zuul: node_modules
+	zuul --local 8080 --ui tape -- test/index.js
+
+.PHONY: release
+release: test
+	npm version $(version)
+	git push && git push --tags
+	npm publish
+
+.PHONY: coverage
+coverage: node_modules index.js test/index.js node_modules
+	@istanbul cover --report html --print detail ./test/index.js
+	@touch coverage
+
+.PHONY: coveralls
+coveralls: node_modules coverage
+	@istanbul report lcov
+	(cat coverage/lcov.info | coveralls) || exit 0
+
+.PHONY: travis
+travis: test coveralls