Add WebExtension port of this add-on

.gitignore

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+smart-referer*.xpi

.gitmodules

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+[submodule "webextension/deps/public-suffix-list"]
+	path = webextension/deps/public-suffix-list
+	url = https://github.com/wrangr/psl.git

Makefile

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+# Once we migrate to WebExtensions for good, this can probably be replaced by the `web-ext` tool…
+
+
+# Name of target file is based on version number
+DISTFILE := smart-referer.xpi
+
+# Assemble list of files that will be included in the final archive
+#  ~ Only consider currently tracked GIT files
+FILELIST := $(shell git ls-files)
+#  ~ Skip ALL hidden files
+FILELIST := $(filter-out .%,       ${FILELIST})
+#  ~ Skip build system files
+FILELIST := $(filter-out Makefile, ${FILELIST})
+#  ~ Only include the pre-assembled, non-minimized distribution file of the PSL
+FILELIST := $(filter-out webextension/deps/public-suffix-list%, ${FILELIST}) webextension/deps/public-suffix-list/dist/psl.js
+
+
+
+# Default target
+.PHONY: all
+all: xpi
+
+# Target from creating a read-to-ship XPI
+.PHONY: xpi
+xpi: ${DISTFILE}
+
+${DISTFILE}: ${FILELIST}
+	rm "${DISTFILE}" 2>/dev/null ||:
+	zip -9 "${DISTFILE}" ${FILELIST}
+
+# Target for making a new GIT release (and building an XPI for it)
+.PHONY .ONESHELL .SILENT: release
+release: ${DISTFILE}
+	##########################
+	# Sanity check for macOS #
+	##########################
+	_dummy_value_check=x
+	test -n "$${_dummy_value_check}" || echo "make .ONESHELL command not supported, please use GNU Make 4.0+!" >&2
+
+	############################
+	# Determine target version #
+	############################
+	version="$$(grep '<em:version>.*</em:version>' "install.rdf" | cut -d'>' -f2 | cut -d'<' -f 1)"
+	if [ -z "$${version}" ];
+	then
+		echo 'Could not detect the current version number' >&2
+		exit 1
+	fi
+
+	######################################
+	# Make sure version number is unique #
+	######################################
+	if git show-ref "v$${version}" >/dev/null;
+	then
+		echo 'Release $${version} already exists, please increment the version number in the "install.rdf" file' >&2
+		exit 2
+	fi
+
+	###########################################
+	# Make sure everything has been committed #
+	###########################################
+	if [ -n "$$(git status --short)" ];
+	then
+		echo 'There are uncommitted files in your repository, please commit or stash them before continuing' >&2
+		exit 3
+	fi
+
+	#################################
+	# Tag the newly created version #
+	#################################
+	git tag "v$${version}"
+
+	#########################
+	# Archive the final XPI #
+	#########################
+	cp "${DISTFILE}" "smart-referer-$${version}.xpi"
+
+# Technically JPM is only for Jetpack-based add-ons, but it has enough compatibility hacks to work
+# with out bootstrapped extension just fine
+.PHONY: run
+run:
+	jpm --binary $$(which firefox) ${JPMARGS} run