routie dev init since i didn't adhere to any proper guidance up until now

frontend/node_modules/eslint-plugin-unicorn/rules/no-this-assignment.js

@@ -0,0 +1,40 @@
+const MESSAGE_ID = 'no-this-assignment';
+const messages = {
+	[MESSAGE_ID]: 'Do not assign `this` to `{{name}}`.',
+};
+
+function getProblem(variableNode, valueNode) {
+	if (
+		variableNode.type !== 'Identifier'
+		|| valueNode?.type !== 'ThisExpression'
+	) {
+		return;
+	}
+
+	return {
+		node: valueNode.parent,
+		data: {name: variableNode.name},
+		messageId: MESSAGE_ID,
+	};
+}
+
+/** @param {import('eslint').Rule.RuleContext} context */
+const create = context => {
+	context.on('VariableDeclarator', node => getProblem(node.id, node.init));
+	context.on('AssignmentExpression', node => getProblem(node.left, node.right));
+};
+
+/** @type {import('eslint').Rule.RuleModule} */
+const config = {
+	create,
+	meta: {
+		type: 'suggestion',
+		docs: {
+			description: 'Disallow assigning `this` to a variable.',
+			recommended: 'unopinionated',
+		},
+		messages,
+	},
+};
+
+export default config;