Grant Forrest

.gitignore

@@ -0,0 +1 @@
+node_modules

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+  "github.copilot.enable": {
+    "*": false
+  },
+  "prettier.enable": false,
+  "prettier.requireConfig": true
+}

README.md

@@ -1,3 +1,8 @@
+# Instructions for my repo
+
+Install Node/NPM
+`npm start`
+
 # What is Code Golf?
 
 > Code golf is a type of recreational computer programming competition in which participants strive to achieve the shortest possible source code that solves a certain problem. Code golf challenges and tournaments may also be named with the programming language used. --- [Wikipedia](https://en.wikipedia.org/wiki/Code_golf)
@@ -9,7 +14,6 @@
 3. Don't Google/Bing/DDG/Kagi for answers.
 4. All pull requests must be opened before Aug 14 2025 11:30 AM EDT.
 
-
 The shortest _correct_ program wins. In the event no submissions fully pass the test suite winners will be selected by number of passing test cases and code brevity.
 
 ## Supported Languages
@@ -81,4 +85,3 @@ if __name__ == "__main__":
 ```
 
 This repo contains a [sample file](https://github.com/kevsmith/code_golf/blob/main/input.txt) you can use for development.
-

main.mjs

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+import * as fs from "fs";let p=[[1000,"M"],[900,'CM'],[500,"D"],[400,"CD"],[100,"C"],[90,"XC"],[50,"L"],[40,"XL"],[10,"X"],[9,"IX"],[5,"V"],[4,"IV"]],v,o,x,r,l='';for (l of fs.readFileSync(process.argv[2],'utf-8').split("\n")){v="I".repeat(0+l);o="";for([x,r]of p)while(v[x-1]){o+=r;v=v.slice(x)}console.log(o+v)}

main.test.mjs

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+import {expect} from "vitest"
+import {it, mock, vi, beforeEach} from "vitest"
+import * as fs from "fs/promises"
+
+vi.mock("fs", () => ({
+  readFileSync: () => `43
+104
+243
+401
+3277
+90
+449
+1199
+905
+`
+}))
+
+const outputs = [
+  'XLIII',
+  'CIV',
+  'CCXLIII',
+  'CDI',
+  'MMMCCLXXVII',
+  'XC',
+  'CDXLIX',
+  'MCXCIX',
+  'CMV'
+]
+
+let log = vi.spyOn(console, "log")
+
+it("produces the right output", async () => {
+  await import("./src.mjs")
+  for (let i = 0; i < outputs.length; i++) {
+    expect(log).toHaveBeenNthCalledWith(i + 1, outputs[i]);
+  }
+})
+
+it("produces the right output minified", async () => {
+  await import("./main.mjs")
+  for (let i = 0; i < outputs.length; i++) {
+    expect(log).toHaveBeenNthCalledWith(i + 1, outputs[i]);
+  }
+})
+
+it("golfs", async () => {
+  const content = await fs.readFile("./main.mjs", "utf-8")
+  expect(content.length).toMatchInlineSnapshot(`313`)
+})

min.mjs

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+import * as fs from 'fs';
+
+
+fs.watchFile('./src.mjs', { }, (cur) => {
+	const content = fs.readFileSync('./src.mjs', 'utf-8');
+	fs.writeFileSync('./main.mjs', content.replace(/\/\/.*$/gm,'').replace(/\n+/g, '').replace(/\t+/g,''));
+})

package.json

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+{
+  "name": "code_golf",
+  "dependencies": {
+    "@types/node": "24.2.1"
+  },
+  "engines": {
+    "node": "24.5.0"
+  },
+  "volta": {
+    "node": "24.5.0"
+  },
+  "scripts": {
+    "test": "vitest",
+    "dev": "pnpm min && node ./main.mjs ./input.txt",
+    "start": "node ./main.mjs",
+    "min": "node ./min.mjs"
+  },
+  "devDependencies": {
+    "vitest": "^3.2.4"
+  }
+}