add CI pipeline with lint, test, build

node_modules/eslint/messages/plugin-conflict.js

@@ -0,0 +1,22 @@
+"use strict";
+
+module.exports = function (it) {
+	const { pluginId, plugins } = it;
+
+	let result = `ESLint couldn't determine the plugin "${pluginId}" uniquely.
+`;
+
+	for (const { filePath, importerName } of plugins) {
+		result += `
+- ${filePath} (loaded in "${importerName}")`;
+	}
+
+	result += `
+
+Please remove the "plugins" setting from either config or remove either plugin installation.
+
+If you still can't figure out the problem, please see https://eslint.org/docs/latest/use/troubleshooting.
+`;
+
+	return result;
+};