chore: set up changesets for version and release automation

.changeset/README.md

@@ -0,0 +1,8 @@
+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
+with multi-package repos, or single-package repos to help you version and publish your code. You can
+find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in
+[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)

.changeset/config.json

@@ -0,0 +1,10 @@
+{
+  "$schema": "https://unpkg.com/@changesets/[email protected]/schema.json",
+  "changelog": "@changesets/cli/changelog",
+  "commit": false,
+  "linked": [],
+  "access": "public",
+  "baseBranch": "master",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

.changeset/lemon-comics-knock.md

@@ -0,0 +1,5 @@
+---
+"@rdfjs/types": major
+---
+
+First release, migrated from @types/rdf-js

.github/workflows/release.yml

@@ -0,0 +1,35 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@master
+        with:
+          # This makes Actions fetch all Git history so that Changesets can generate changelogs with the correct commits
+          fetch-depth: 0
+
+      - name: Setup Node.js
+        uses: actions/[email protected]
+        with:
+          node-version: 14
+
+      - name: Install Dependencies
+        run: yarn
+
+      - name: Create Release Pull Request or Publish to npm
+        id: changesets
+        uses: changesets/action@master
+        with:
+          # This expects you to have a script called release which does a build for your packages and calls changeset publish
+          publish: yarn release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@rdfjs/types",
-  "version": "2.0.0",
+  "version": "0.0.0",
   "types": "index.d.ts",
   "author": {
     "name": "RDF/JS Representation Task Force",
@@ -9,12 +9,14 @@
   },
   "scripts": {
     "lint": "eslint . --ext .ts",
-    "test": "tsc --noEmit"
+    "test": "tsc --noEmit",
+    "release": "changeset publish"
   },
   "dependencies": {
     "@types/node": "*"
   },
   "devDependencies": {
+    "@changesets/cli": "^2.16.0",
     "@typescript-eslint/eslint-plugin": "^4.5.0",
     "@typescript-eslint/parser": "^4.5.0",
     "eslint": "^7.12.0",