build: bundle all with ncc

.gitignore

@@ -1 +1,4 @@
 node_modules
+
+.sentinel
+build

Makefile

@@ -0,0 +1,59 @@
+# This Makefile has been written according to guidelines at
+# https://tech.davis-hansson.com/p/make/
+
+# Use ">" instead of "\t" for blocks to avoid surprising whitespace issues
+ifeq ($(origin .RECIPEPREFIX), undefined)
+  $(error This Make does not support .RECIPEPREFIX. Please use GNU Make 4.0 or later. If you've installed an up-to-date Make with homebrew, you maye need to invoke 'gmake' instead of 'make'.)
+endif
+.RECIPEPREFIX = >
+
+# Make sure we use actual bash instead of zsh or sh
+SHELL := bash
+
+# Enfore bash "strict mode"
+# http://redsymbol.net/articles/unofficial-bash-strict-mode/
+.SHELLFLAGS := -euo pipefail -c
+
+# Use one shell session per rule instead of one shell session per line
+.ONESHELL:
+
+# Delete the target of a Make rule if the rule fails
+.DELETE_ON_ERROR:
+
+# Warn on undefined variables
+MAKEFLAGS += --warn-undefined-variables
+
+# Disabling all the magical-but-unreadable bits of Make
+MAKEFLAGS += --no-builtin-rules
+
+# Wrap npx so it only uses local dependencies
+NPX := npx --no-install
+
+SRC := $(shell find src -type f)
+
+# The first entry in a make file is the one that gets called by `make` without
+# arguments
+default: dist/index.js
+.PHONY: default
+
+clean:
+> rm -rf .sentinel build dist
+.PHONY: clean
+
+.sentinel/lint/es: $(SRC)
+> npm run lint:es
+> @mkdir -p $(@D)
+> @touch $@
+
+.sentinel/lint/types: $(SRC)
+> npm run lint:types
+> @mkdir -p $(@D)
+> @touch $@
+
+.sentinel/build: $(SRC)
+> $(NPX) babel --extensions '.js,.ts' --source-maps -d build src
+> @mkdir -p $(@D)
+> @touch $@
+
+dist/index.js: .sentinel/build
+> $(NPX) ncc build build/index.js --source-map

action.yml

@@ -35,4 +35,4 @@ inputs:
     required: false
 runs:
   using: 'node12'
-  main: 'index.js'
+  main: 'dist/index.js'