feat(CI): CHANGELOG.mdの追記個所をチェックするCIを追加 (#12963)

* feat(CI): CHANGELOG.mdの追記個所をチェックするCIを追加

* fix

* remove strategy

* fix

* fix

1 files changed, 62 insertions, 0 deletions

diff --git a/scripts/changelog-checker/src/parser.ts b/scripts/changelog-checker/src/parser.ts
new file mode 100644
index 0000000000..d6a9ddeda8
--- /dev/null
+++ b/scripts/changelog-checker/src/parser.ts
@@ -0,0 +1,62 @@
+import * as fs from 'node:fs';
+import { unified } from 'unified';
+import remarkParse from 'remark-parse';
+import { Heading, List, Node } from 'mdast';
+import { toString } from 'mdast-util-to-string';
+
+export class Release {
+	public readonly releaseName: string;
+	public readonly categories: ReleaseCategory[];
+
+	constructor(releaseName: string, categories: ReleaseCategory[] = []) {
+		this.releaseName = releaseName;
+		this.categories = [...categories];
+	}
+}
+
+export class ReleaseCategory {
+	public readonly categoryName: string;
+	public readonly items: string[];
+
+	constructor(categoryName: string, items: string[] = []) {
+		this.categoryName = categoryName;
+		this.items = [...items];
+	}
+}
+
+function isHeading(node: Node): node is Heading {
+	return node.type === 'heading';
+}
+
+function isList(node: Node): node is List {
+	return node.type === 'list';
+}
+
+export function parseChangeLog(path: string): Release[] {
+	const input = fs.readFileSync(path, { encoding: 'utf8' });
+	const processor = unified().use(remarkParse);
+
+	const releases: Release[] = [];
+	const root = processor.parse(input);
+
+	let release: Release | null = null;
+	let category: ReleaseCategory | null = null;
+	for (const it of root.children) {
+		if (isHeading(it) && it.depth === 2) {
+			// リリース
+			release = new Release(toString(it));
+			releases.push(release);
+		} else if (isHeading(it) && it.depth === 3 && release) {
+			// リリース配下のカテゴリ
+			category = new ReleaseCategory(toString(it));
+			release.categories.push(category);
+		} else if (isList(it) && category) {
+			for (const listItem of it.children) {
+				// カテゴリ配下のリスト項目
+				category.items.push(toString(listItem));
+			}
+		}
+	}
+
+	return releases;
+}