versioning scripts

package.json

@@ -7,7 +7,10 @@
     "lint": "eslint",
     "lint:fix": "eslint --fix",
     "test": "mocha",
-    "build": "./build-release.mjs"
+    "build": "./build-release.mjs",
+    "preversion": "npm test",
+    "version": "npm run build && ./prep-changelog && git add -A dist CHANGELOG.md",
+    "postversion": "git push origin HEAD && git push origin v$(npm pkg get version --workspaces=false | tr -d \\\") && git push -f origin $(./retag)"
   },
   "repository": {
     "type": "git",

prep-changelog

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+
+import { readFile, writeFile, rename } from 'node:fs/promises';
+import process from 'node:process';
+
+async function main() {
+  const version = JSON.parse(await readFile('./package.json', { encoding: 'utf8' })).version;
+  const changesFile = 'CHANGELOG.md';
+  const changes = await readFile(changesFile, { encoding: 'utf8' });
+  const unreleasedRx = /^## Unreleased\n/m;
+  if (!changes.match(unreleasedRx)) {
+    console.error("Unable to find Unreleased section!");
+    process.exit(1);
+  }
+  if (changes.match(new RegExp(`^## ${version.replace('.', '\\.')} `, 'm'))) {
+    console.error(`${version} section already exists!`);
+    process.exit(1);
+  }
+  const date = new Date();
+  const dateString = [date.getUTCFullYear(), date.getUTCMonth()+1, date.getUTCDate()].map(d => d.toString().padStart(2, '0')).join('-');
+  const newChanges = changes.replace(/^## Unreleased\n/m, `## ${version} (${dateString})\n`);
+  const newFile = `CHANGELOG.md.${process.pid}`;
+  await writeFile(newFile, newChanges, { encoding: 'utf8' });
+  await rename(newFile, changesFile);
+}
+
+main();

retag

@@ -0,0 +1,42 @@
+#!/usr/bin/env node
+
+import process from 'node:process';
+import child_process from 'node:child_process';
+import { promisify } from 'node:util';
+import { readFile } from 'node:fs/promises';
+
+const execFile = promisify(child_process.execFile);
+
+async function main() {
+  let version;
+  if (process.argv.length == 2) {
+    const content = await readFile('./package.json', { encoding: 'utf8' });
+    version = JSON.parse(content).version;
+  }
+  else if (process.argv.length == 3) {
+    version = process.argv[2];
+  }
+  else {
+    throw new Error(`Invalid args ${process.argv.join(', ')}`);
+  }
+
+  const res = version.match(/^v?((([0-9]+)\.[0-9]+)\.[0-9]+)$/);
+  if (res === null) {
+    throw new Error(`Invalid version ${version}`);
+  }
+
+  const [ , patch, minor, major ] = res;
+
+  const { stdout, stderr } = await execFile('git', ['rev-parse', '--verify', '--quiet', `v${patch}`]);
+  if (stderr.length) {
+    process.stderr.write(stderr);
+  }
+  const tagRef = stdout.trim();
+
+  for (const tag of [minor, major]) {
+    await execFile('git', ['update-ref', `refs/tags/v${tag}`, tagRef]);
+    process.stdout.write(`v${tag}\n`);
+  }
+}
+
+main();