Initial commit

node_modules/@11ty/eleventy/src/Util/DateGitFirstAdded.js

@@ -0,0 +1,24 @@
+import spawn from "cross-spawn";
+
+function getGitFirstAddedTimeStamp(filePath) {
+	return (
+		parseInt(
+			spawn
+				.sync(
+					"git",
+					// Formats https://www.git-scm.com/docs/git-log#_pretty_formats
+					// %at author date, UNIX timestamp
+					["log", "--diff-filter=A", "--follow", "-1", "--format=%at", filePath],
+				)
+				.stdout.toString("utf-8"),
+		) * 1000
+	);
+}
+
+// return a Date
+export default function (inputPath) {
+	let timestamp = getGitFirstAddedTimeStamp(inputPath);
+	if (timestamp) {
+		return new Date(timestamp);
+	}
+}