// SaveMyToken local lab. Run with Node.js 22 or newer.
import assert from "node:assert/strict";

// Supplied token counts, not a tokenizer or measured provider usage.
const windowSize = 1000, outputReserve = 200, fixedInput = 150;
const available = windowSize - outputReserve - fixedInput;
const items = [
  { id: "constraints", tokens: 120 },
  { id: "current-task", tokens: 180 },
  { id: "evidence", tokens: 250 },
  { id: "old-chatter", tokens: 400 },
];
let used = 0;
const kept = items.filter(item => {
  if (used + item.tokens > available) return false;
  used += item.tokens;
  return true;
});
assert.ok(used + fixedInput + outputReserve <= windowSize);
assert.equal(used, 550);
console.log("Available input budget:", available);
console.log("Kept:", kept.map(item => item.id).join(", "));
console.log("Unallocated tokens:", available - used);