feat(upgrade): migrate to ESM

Author: gfortaine

CHANGELOG.md

@@ -1,5 +1,8 @@
 # CHANGELOG
 
+## 3.0.0
+- This package is now pure ESM. Please [read this](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c).
+
 ## 2.0.1
 This release adds support for esmodule imports (see #4).
 

jasmine.json

@@ -1,6 +1,6 @@
 {
     "spec_dir": "lib",
     "spec_files": [
-        "**/*.spec.js"
+        "**/*.spec.cjs"
     ]
 }

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@microsoft/fetch-event-source",
-  "version": "2.0.1",
+  "version": "3.0.0",
   "description": "A better API for making Event Source requests, with all the features of fetch()",
   "homepage": "https://github.com/Azure/fetch-event-source#readme",
   "repository": "github:Azure/fetch-event-source",
@@ -13,10 +13,20 @@
   "module": "lib/esm/index.js",
   "types": "lib/cjs/index.d.ts",
   "sideEffects": false,
+  "type": "module",
+  "files": [
+    "CHANGELOG.md",
+    "lib",
+    "tsconfig.esm.json"
+  ],
+  "engines": {
+    "node": ">=14.16"
+  },
   "scripts": {
     "clean": "rimraf ./lib ./coverage",
     "prebuild": "npm run clean",
     "build": "tsc && tsc -p tsconfig.esm.json",
+    "postbuild": "find ./lib/cjs -name \"*.js\" -exec sh -c 'mv \"$1\" \"${1%.js}.cjs\"' _ {} \\;",
     "test": "nyc jasmine --config=jasmine.json",
     "prepublishOnly": "npm run build && npm run test"
   },

package.json

@@ -1,4 +1,4 @@
-import { EventSourceMessage, getBytes, getLines, getMessages } from './parse';
+import { EventSourceMessage, getBytes, getLines, getMessages } from './parse.js';
 
 export const EventStreamContentType = 'text/event-stream';
 

src/fetch.ts

@@ -1,2 +1,2 @@
-export { fetchEventSource, FetchEventSourceInit, EventStreamContentType } from './fetch';
+export { fetchEventSource, FetchEventSourceInit, EventStreamContentType } from './fetch.js';
 export { EventSourceMessage } from './parse';