feat: log filtered commits in debug

relates #29

Author: antongolub

lib/getCommitsFiltered.js

@@ -4,6 +4,7 @@ const execa = require("execa");
 const { check, ValueError } = require("./blork");
 const getStream = require("get-stream");
 const cleanPath = require("./cleanPath");
+const debug = require("debug")("msr:commitsFilter");
 
 /**
  * Retrieve the list of commits on the current branch since the commit sha associated with the last release, or all the commits of the current branch if there is no last released version.
@@ -43,10 +44,8 @@ async function getCommitsFiltered(cwd, dir, lastHead = undefined, branch = "mast
 
 	// Use git-log-parser to get the commits.
 	const relpath = relative(root, dir);
-	const stream = gitLogParser.parse(
-		{ _: ["--first-parent", branch, lastHead ? `${lastHead}..HEAD` : "HEAD", "--", relpath] },
-		{ cwd, env: process.env }
-	);
+	const gitLogFilterQuery = ["--first-parent", branch, lastHead ? `${lastHead}..HEAD` : "HEAD", "--", relpath];
+	const stream = gitLogParser.parse({ _: gitLogFilterQuery }, { cwd, env: process.env });
 	const commits = await getStream.array(stream);
 
 	// Trim message and tags.
@@ -55,6 +54,9 @@ async function getCommitsFiltered(cwd, dir, lastHead = undefined, branch = "mast
 		commit.gitTags = commit.gitTags.trim();
 	});
 
+	debug("git log filter query: %o", gitLogFilterQuery);
+	debug("filtered commits: %O", commits);
+
 	// Return the commits.
 	return commits;
 }