add a script that concatenates changelog_unreleased into a blog post …

…draft

scripts/draft-blog-post.js

@@ -0,0 +1,87 @@
+"use strict";
+
+const fs = require("fs");
+const path = require("path");
+
+const changelogUnreleasedDir = path.join(__dirname, "../changelog_unreleased");
+const blogDir = path.join(__dirname, "../website/blog");
+
+const version = require("../package.json").version.replace(/-.+/, "");
+const versionShort = version.replace(/\.0$/, "");
+
+const categories = [
+  { dir: "javascript", title: "JavaScript" },
+  { dir: "typescript", title: "TypeScript" },
+  { dir: "flow", title: "Flow" },
+  { dir: "json", title: "JSON" },
+  { dir: "css", title: "CSS" },
+  { dir: "scss", title: "SCSS" },
+  { dir: "less", title: "Less" },
+  { dir: "html", title: "HTML" },
+  { dir: "vue", title: "Vue" },
+  { dir: "angular", title: "Angular" },
+  { dir: "lwc", title: "LWC" },
+  { dir: "handlebars", title: "Handlebars" },
+  { dir: "graphql", title: "GraphQL" },
+  { dir: "markdown", title: "Markdown" },
+  { dir: "mdx", title: "MDX" },
+  { dir: "yaml", title: "YAML" },
+  { dir: "api", title: "API" },
+  { dir: "cli", title: "CLI" }
+];
+
+const categoriesByDir = categories.reduce((result, category) => {
+  result[category.dir] = category;
+  return result;
+}, {});
+
+const dirs = fs
+  .readdirSync(changelogUnreleasedDir, { withFileTypes: true })
+  .filter(entry => entry.isDirectory());
+
+for (const dir of dirs) {
+  const dirPath = path.join(changelogUnreleasedDir, dir.name);
+  const category = categoriesByDir[dir.name];
+
+  if (!category) {
+    throw new Error("Unknown category: " + dir.name);
+  }
+
+  category.entries = fs
+    .readdirSync(path.join(changelogUnreleasedDir, dir.name))
+    .filter(fileName => /^pr-\d+\.md$/.test(fileName))
+    .map(fileName =>
+      fs
+        .readFileSync(path.join(dirPath, fileName), "utf8")
+        .trim()
+        .replace(/^#### [a-z]/, s => s.toUpperCase())
+    );
+}
+
+const result = [
+  `---
+author: "🚧"
+authorURL: "https://github.com/🚧"
+title: "Prettier ${versionShort}: 🚧"
+---`,
+  "🚧 Write an introduction here.",
+  "<!--truncate-->",
+  "## Highlights",
+  "🚧 Move the most interesting changes here.",
+  "## Other changes"
+];
+
+for (const category of categories) {
+  if (!category.entries || category.entries.length === 0) {
+    continue;
+  }
+
+  result.push("### " + category.title);
+
+  result.push(...category.entries);
+}
+
+fs.writeFileSync(
+  path.join(blogDir, `${new Date().getFullYear()}-00-00-${version}.md`),
+  result.join("\n\n") + "\n"
+);