part 1

2022/05/part1.js

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+import * as R from "remeda";
+
+import { readFile } from "../03/part1.js";
+
+export const sample = readFile("2022", "05", "sample");
+export const puzzleInput = readFile("2022", "05", "input");
+
+function parseHeaps(text) {
+    const lines = text.split("\n").filter( R.identity );
+    lines.reverse();
+
+    let [ header, ...crates ] = lines;
+
+    const stacks = [];
+
+    while(header.trimEnd()) {
+
+        header = header.replace( /^(\s+)\d/, (...args) => {
+            crates = crates.map( c => c.slice(args[1].length) );
+
+            const stack = [];
+
+            crates = crates.map( l => l.replace(/./, (c) => {
+                if( c !== ' ' ) stack.push(c);
+                return '';
+            }));
+
+
+            stacks.push(stack);
+
+            return '';
+        });
+    }
+
+    return stacks;
+}
+
+function parseCommands(text) {
+    return text.split("\n").filter(R.identity).map(
+        line => line.match(/\d+/g).map( x => parseInt(x) )
+    )
+}
+
+function moveStacks([stacks,commands]) {
+    for( let [move, from, to] of commands ) {
+        console.log({move,from,to});
+
+        while(move-- > 0) {
+            stacks[to-1].push( stacks[from-1].pop() );
+        }
+
+    }
+
+    return stacks;
+}
+
+const spy = x => { console.log(x); return x; }
+
+export const solutionPart1 = R.createPipe(
+    text => text.split("\n\n"),
+    ([heaps,commands]) => [ parseHeaps(heaps), parseCommands(commands) ],
+    moveStacks,
+    spy,
+    R.map( x => x.pop() ),
+    x => x.join('')
+)
+

2022/05/part2.js

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+import * as R from "remeda";

2022/05/sample

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+    [D]
+[N] [C]
+[Z] [M] [P]
+ 1   2   3
+
+move 1 from 2 to 1
+move 3 from 1 to 3
+move 2 from 2 to 1
+move 1 from 1 to 2

2022/05/test.js

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+import { test, expect, describe } from "vitest";
+
+import { expectSolution } from "../01/main.js";
+import { solutionPart1, puzzleInput,sample } from "./part1.js";
+import { solutionPart2 } from "./part2.js";
+
+describe("part 1", () => {
+    test( "sample", () => {
+        expect(solutionPart1(sample)).toEqual('CMZ');
+    });
+  test.only("solution", () => {
+    expectSolution(solutionPart1(puzzleInput)).toEqual("VPCDMSLWJ");
+  });
+});
+
+describe("part 2", () => {
+  test.todo("solution", () => {
+    expectSolution(solutionPart2(puzzleInput)).toEqual("TODO");
+  });
+});