add CI pipeline with lint, test, build

node_modules/eslint/lib/rules/no-nested-ternary.js

@@ -0,0 +1,46 @@
+/**
+ * @fileoverview Rule to flag nested ternary expressions
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../types').Rule.RuleModule} */
+module.exports = {
+	meta: {
+		type: "suggestion",
+
+		docs: {
+			description: "Disallow nested ternary expressions",
+			recommended: false,
+			frozen: true,
+			url: "https://eslint.org/docs/latest/rules/no-nested-ternary",
+		},
+
+		schema: [],
+
+		messages: {
+			noNestedTernary: "Do not nest ternary expressions.",
+		},
+	},
+
+	create(context) {
+		return {
+			ConditionalExpression(node) {
+				if (
+					node.alternate.type === "ConditionalExpression" ||
+					node.consequent.type === "ConditionalExpression"
+				) {
+					context.report({
+						node,
+						messageId: "noNestedTernary",
+					});
+				}
+			},
+		};
+	},
+};