[INTERNAL] Changelog: Consolidate dependency changes for GitHub relea…

…ses (#382)

Co-authored-by: Matthias Osswald <mat.osswald@sap.com>

.chglog/consolidate-changelogs.js

@@ -0,0 +1,59 @@
+const readline = require("readline");
+const path = require("path");
+const fs = require("fs");
+
+function handleDependencyBump(line) {
+	line = line.replace("[@ui5](https://github.com/ui5)", "@ui5");
+	const moduleMatch = line.match(/Bump (@ui5\/[^\s]+).*to ([0-9.]+)/);
+	if (moduleMatch) {
+		const [, moduleName, moduleVersion] = moduleMatch;
+		const moduleDir = path.dirname(require.resolve(moduleName));
+		const changelogPath = path.join(moduleDir, "CHANGELOG.md");
+		const changelog = fs.readFileSync(changelogPath, {
+			encoding: "utf8"
+		});
+		const sectionRegExp = new RegExp(`^## \\[v${moduleVersion.replace(".", "\\.")}\\].+\\n((?:.|\\n)+?)(?=\\n<a )`, "m");
+		const changelogMatch = changelog.match(sectionRegExp);
+		if (!changelogMatch) {
+			throw new Error(`Failed to find relevant changelog for ${moduleName}@${moduleVersion}`)
+		}
+		let versionChangelog = changelogMatch[1];
+		versionChangelog = versionChangelog.replace(/^### /gm, "#### ");
+		versionChangelog = versionChangelog.replace(/^./gm, "      $&");
+		const repoUrl = `https://github.com/SAP/${moduleName.replace("@ui5/", "ui5-")}/tree/v${moduleVersion}`;
+		line += `
+    - Changes contained in [v${moduleVersion}](${repoUrl})
+
+${versionChangelog}`;
+	}
+	return line;
+}
+
+function readStdin() {
+	return new Promise((resolve, reject) => {
+		const rl = readline.createInterface({
+		    input: process.stdin
+		});
+
+		let buffer = "";
+		rl.on("line", (line) => {
+			try {
+				if (line.startsWith("- Bump")) {
+					buffer += `${handleDependencyBump(line)}`
+				} else {
+					buffer += `${line}\n`;
+				}
+			} catch (err) {
+				reject(err)
+			}
+		});
+
+		rl.on("pause", () => {
+		  resolve(buffer);
+		});
+	});
+}
+
+readStdin().then((result) => {
+	process.stdout.write(result); // Don't use console.log since one new line at the end is already enough
+});

package.json

@@ -42,7 +42,7 @@
 		"preversion": "npm test",
 		"version": "git-chglog --next-tag v$npm_package_version -o CHANGELOG.md && git add CHANGELOG.md",
 		"prepublishOnly": "git push --follow-tags",
-		"release-note": "git-chglog -c .chglog/release-config.yml v$npm_package_version",
+		"release-note": "git-chglog -c .chglog/release-config.yml v$npm_package_version | node .chglog/consolidate-changelogs.js",
 		"report-coveralls": "nyc report --reporter=text-lcov | COVERALLS_PARALLEL=true coveralls"
 	},
 	"files": [
@@ -67,6 +67,7 @@
 			"text-summary"
 		],
 		"exclude": [
+			".chglog/**",
 			"docs/**",
 			"jsdocs/**",
 			"coverage/**",