Switch to Changesets-based release process

.github/workflows/version-or-publish.yml

@@ -0,0 +1,30 @@
+name: Version or Publish
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  changesets:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@master
+
+      - name: Setup Node.js 12.x
+        uses: actions/setup-node@master
+        with:
+          node-version: 12.x
+
+      - name: Install Dependencies
+        run: yarn
+
+      - name: Create Release Pull Request or Publish
+        id: changesets
+        uses: changesets/action@master
+        with:
+          version: yarn version
+          publish: yarn release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,4 +1,6 @@
 node_modules
 .parcel-cache
 .cache
-*.log
+*.log
+
+dist/

package.json

@@ -4,8 +4,8 @@
   "main": "dist/index.js",
   "license": "MIT",
   "devDependencies": {
-    "@changesets/cli": "^2.9.1",
-    "@changesets/write": "^0.1.3",
+    "@changesets/cli": "^2.18.0",
+    "@changesets/write": "^0.1.5",
     "fixturez": "^1.1.0",
     "parcel": "^1.12.3",
     "prettier": "^2.0.5",
@@ -14,11 +14,13 @@
   "scripts": {
     "build": "parcel build ./src/index.ts --no-source-maps --target=node --bundle-node-modules",
     "test": "jest",
-    "test:watch": "yarn test --watch"
+    "test:watch": "yarn test --watch",
+    "version": "changeset version",
+    "release": "node ./scripts/release.js"
   },
   "dependencies": {
     "@actions/core": "^1.2.4",
-    "@actions/exec": "^1.0.4",
+    "@actions/exec": "^1.1.0",
     "@actions/github": "^4.0.0",
     "@babel/core": "^7.13.10",
     "@babel/preset-env": "^7.13.10",
@@ -42,9 +44,7 @@
     "unified": "^8.3.2"
   },
   "husky": {
-    "hooks": {
-      "pre-commit": "yarn build && git add dist/index.js"
-    }
+    "hooks": {}
   },
   "prettier": {}
 }

scripts/release.js

@@ -0,0 +1,35 @@
+const path = require("path");
+const { exec, getExecOutput } = require("@actions/exec");
+const tag = `v${require("../package.json").version}`;
+
+process.chdir(path.join(__dirname, ".."));
+
+(async () => {
+  const { exitCode, stderr } = await getExecOutput(
+    `git`,
+    ["ls-remote", "--exit-code", "origin", "--tags", `refs/tags/${tag}`],
+    {
+      ignoreReturnCode: true,
+    }
+  );
+  const exists = stdout.trim() !== "";
+  if (exitCode === 0) {
+    console.log(
+      `Action is not being published because version ${tag} is already published`
+    );
+    return;
+  }
+  if (exitCode !== 2) {
+    throw new Error(`git ls-remote exited with ${exitCode}:\n${stderr}`);
+  }
+
+  await exec("yarn", ["build"]);
+
+  await exec("git", ["checkout", "--detach"]);
+  await exec("git", ["add", "--force", "dist"]);
+  await exec("git", ["commit", "-m", tag]);
+
+  await exec("changeset", ["tag"]);
+
+  await exec("git", ["push", "origin", tag]);
+})();

scripts/version.js

@@ -0,0 +1,19 @@
+const fs = require("fs");
+const path = require("path");
+const { exec } = require("@actions/exec");
+
+process.chdir(path.join(__dirname, ".."));
+
+(async () => {
+  await exec("changeset", ["version"]);
+
+  const tag = `v${require("../package.json").version}`;
+
+  const readmePath = path.join(__dirname, "..", "README.md");
+  const content = fs.readFileSync(readmePath, "utf8");
+  const updatedContent = content.replace(
+    /changesets\/action@[^\s]+/g,
+    `changesets/action@${tag}`
+  );
+  fs.writeFileSync(readmePath, updatedContent);
+})();