ES Module

.gitignore

@@ -1,9 +1,13 @@
 *.min.js.gz
+*.mjs
+*.tgz
 *~
 .DS_Store
-.idea
+.idea/
+.vscode/
 .nyc_output/
 gh-pages
 node_modules
 npm-debug.log*
 package-lock.json
+~$*

Makefile

@@ -1,15 +1,17 @@
 #!/usr/bin/env bash -c make
 
 SRC=./int64-buffer.js
-TESTS=./test/*.js
+JSTEST=./test/test.js
 DIST=./dist
 JSDEST=./dist/int64-buffer.min.js
 JSGZIP=./dist/int64-buffer.min.js.gz
+ESMDEST=./int64-buffer.mjs
+ESMTEST=./test/test.mjs
 
-all: $(JSGZIP)
+all: $(JSGZIP) $(ESMDEST)
 
 clean:
-	rm -fr $(JSDEST) $(JSGZIP)
+	rm -fr $(JSDEST) $(JSGZIP) $(ESMDEST) $(ESMTEST)
 
 $(DIST):
 	mkdir -p $@
@@ -27,10 +29,23 @@ test-coverage:
 	./node_modules/.bin/nyc make mocha
 	./node_modules/.bin/nyc report --reporter=text-lcov > .nyc_output/lcov.info
 
-mocha:
-	./node_modules/.bin/mocha -R spec $(TESTS)
+mocha: $(JSTEST) $(ESMTEST)
+	./node_modules/.bin/mocha -R spec $(JSTEST)
+	./node_modules/.bin/mocha -R spec $(ESMTEST)
 
 jshint:
 	./node_modules/.bin/jshint .
 
-.PHONY: all clean test jshint mocha
+#### ES Module
+
+$(ESMDEST): $(SRC) Makefile
+	mkdir -p $(dir $@)
+	perl -pe 's#^(var|.*export)#/// $$1#; s#^(\s*)(\S.*= )(factory.")#$$1export const $$2/* \@__PURE__ */ $$3#' < $< > $@
+
+$(ESMTEST): $(JSTEST) Makefile
+	mkdir -p $(dir $@)
+	perl -pe 's#^(var exported)#/// $$1#; s#^.*#import * as exported from "../int64-buffer.mjs";# if $$. == 1' < $< > $@
+
+####
+
+.PHONY: all clean test jshint mocha esm

package.json

@@ -19,12 +19,18 @@
     "nyc": "^17.1.0",
     "terser": "^5.37.0"
   },
+  "exports": {
+    "types": "./int64-buffer.d.ts",
+    "import": "./int64-buffer.mjs",
+    "require": "./int64-buffer.js"
+  },
   "files": [
     "LICENSE",
     "README.md",
     "dist/int64-buffer.min.js",
     "int64-buffer.js",
-    "int64-buffer.d.ts"
+    "int64-buffer.d.ts",
+    "int64-buffer.mjs"
   ],
   "homepage": "https://github.com/kawanet/int64-buffer",
   "jshintConfig": {
@@ -65,5 +71,6 @@
     "prepack": "make clean all test",
     "test": "make test"
   },
+  "type": "commonjs",
   "typings": "int64-buffer.d.ts"
 }