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

frontend/node_modules/eslint-plugin-unicorn/rules/number-literal-case.js

@@ -0,0 +1,82 @@
+import {checkVueTemplate} from './utils/rule.js';
+import {isNumericLiteral, isBigIntLiteral} from './ast/index.js';
+
+const MESSAGE_ID = 'number-literal-case';
+const messages = {
+	[MESSAGE_ID]: 'Invalid number literal casing.',
+};
+
+/**
+@param {string} raw
+@param {Options} options
+*/
+const fix = (raw, {hexadecimalValue}) => {
+	let fixed = raw.toLowerCase();
+	if (fixed.startsWith('0x')) {
+		fixed = '0x' + fixed.slice(2)[hexadecimalValue === 'lowercase' ? 'toLowerCase' : 'toUpperCase']();
+	}
+
+	return fixed;
+};
+
+/** @param {import('eslint').Rule.RuleContext} context */
+const create = context => {
+	context.on('Literal', node => {
+		const {raw} = node;
+
+		/** @type {Options} */
+		const options = context.options[0] ?? {};
+		options.hexadecimalValue ??= 'uppercase';
+
+		let fixed = raw;
+		if (isNumericLiteral(node)) {
+			fixed = fix(raw, options);
+		} else if (isBigIntLiteral(node)) {
+			fixed = fix(raw.slice(0, -1), options) + 'n';
+		}
+
+		if (raw !== fixed) {
+			return {
+				node,
+				messageId: MESSAGE_ID,
+				fix: fixer => fixer.replaceText(node, fixed),
+			};
+		}
+	});
+};
+
+/** @typedef {Record<keyof typeof schema[0]["properties"], typeof caseEnum["enum"][number]>} Options */
+
+const caseEnum = /** @type {const} */ ({
+	enum: ['uppercase', 'lowercase'],
+});
+
+const schema = [
+	{
+		type: 'object',
+		additionalProperties: false,
+		properties: {
+			hexadecimalValue: caseEnum,
+		},
+	},
+];
+
+/** @type {import('eslint').Rule.RuleModule} */
+const config = {
+	create: checkVueTemplate(create),
+	meta: {
+		type: 'suggestion',
+		docs: {
+			description: 'Enforce proper case for numeric literals.',
+			recommended: 'unopinionated',
+		},
+		fixable: 'code',
+		schema,
+		defaultOptions: [{
+			hexadecimalValue: 'uppercase',
+		}],
+		messages,
+	},
+};
+
+export default config;