2022-21 part 1 in js

2022/21-Monkey-Math/.eslintrc.json

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+{
+	"env": {
+		"es2021": true,
+		"node": true
+	},
+	"extends": [
+		"eslint:recommended",
+		"plugin:node/recommended"
+	],
+	"overrides": [
+		{
+			"files": ["*.js"],
+			"rules": {
+				"no-constant-condition": "off"
+			}
+		}
+	],
+	"parserOptions": {
+		"ecmaVersion": "latest",
+		"sourceType": "module"
+	},
+	"rules": {
+		"indent": [
+			"error",
+			"tab"
+		],
+		"linebreak-style": [
+			"error",
+			"unix"
+		],
+		"quotes": [
+			"error",
+			"double"
+		],
+		"semi": [
+			"error",
+			"always"
+		],
+		"node/no-unsupported-features/es-syntax": [
+			"error",
+			{ "ignores": ["modules"] }
+		]
+	}
+}

2022/21-Monkey-Math/example

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+root: pppw + sjmn
+dbpl: 5
+cczh: sllz + lgvd
+zczc: 2
+ptdq: humn - dvpt
+dvpt: 3
+lfqf: 4
+humn: 5
+ljgn: 2
+sjmn: drzm * dbpl
+sllz: 4
+pppw: cczh / lfqf
+lgvd: ljgn * ptdq
+drzm: hmdt - zczc
+hmdt: 32

2022/21-Monkey-Math/first.js

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+import * as fs from "fs";
+
+const simple = /(\w+): (\d+)/;
+const operation = /(\w+): (\w+) ([+\-*/]) (\w+)/;
+
+function load(filename) {
+	let res = {};
+	fs.readFileSync(filename, "utf8")
+		.trim()
+		.split("\n")
+		.forEach(line => {
+			const s = line.match(simple);
+			if (s) {
+				res[s[1]] = function() { return parseInt(s[2]); };
+			} else {
+				const o = line.match(operation);
+				res[o[1]] = function () {
+					let left = res[o[2]]();
+					let right = res[o[4]]();
+					switch(o[3]) {
+					case "+": return left + right;
+					case "-": return left - right;
+					case "*": return left * right;
+					case "/": return left / right;
+					}
+				};
+			}
+		});
+	return res;
+}
+
+let example = load("example");
+let input = load("input");
+
+function solve(input) {
+	return input["root"]();
+}
+
+const exampleOutput = solve(example);
+if (exampleOutput !== 152) {
+	console.log("Example failed with " + exampleOutput);
+	process.exit(1); // eslint-disable-line
+}
+
+console.log(solve(input));

2022/21-Monkey-Math/package.json

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+{
+	"type": "module",
+	"engines": {
+		"node": ">=18.10.0"
+	},
+	"dependencies": {
+		"eslint": "^8.30.0",
+		"eslint-plugin-node": "^11.1.0",
+		"jslint": "^0.12.1"
+	}
+}