add CI pipeline with lint, test, build

node_modules/eslint/lib/shared/message-counts.js

@@ -0,0 +1,46 @@
+/**
+ * @fileoverview Helpers for counting errors and warnings in lint messages.
+ * @author Nicholas C. Zakas
+ * @author Blake Sager
+ */
+
+"use strict";
+
+/**
+ * It will calculate the error and warning count for collection of messages per file
+ * @param {LintMessage[]} messages Collection of messages
+ * @returns {Object} Contains the stats
+ */
+function calculateStatsPerFile(messages) {
+	const stat = {
+		errorCount: 0,
+		fatalErrorCount: 0,
+		warningCount: 0,
+		fixableErrorCount: 0,
+		fixableWarningCount: 0,
+	};
+
+	for (let i = 0; i < messages.length; i++) {
+		const message = messages[i];
+
+		if (message.fatal || message.severity === 2) {
+			stat.errorCount++;
+			if (message.fatal) {
+				stat.fatalErrorCount++;
+			}
+			if (message.fix) {
+				stat.fixableErrorCount++;
+			}
+		} else {
+			stat.warningCount++;
+			if (message.fix) {
+				stat.fixableWarningCount++;
+			}
+		}
+	}
+	return stat;
+}
+
+module.exports = {
+	calculateStatsPerFile,
+};