scriptc/tests/corpus/6830-node-island-callbacks/lib.cjs

"use strict";
const { EventEmitter } = require("node:events");

class Bus extends EventEmitter {
  fire(n) {
    const delivered = this.emit("data", n, `item-${n}`);
    return delivered;
  }
}

function each(items, fn) {
  const out = [];
  for (let i = 0; i < items.length; i++) out.push(fn(items[i], i));
  return out;
}

function compute(n, callback) {
  setTimeout(() => {
    if (n < 0) callback(new RangeError(`negative: ${n}`));
    else callback(null, n * n);
  }, 5);
}

function guarded(fn, value) {
  try {
    return `ok ${fn(value)}`;
  } catch (e) {
    return `caught ${e.name}: ${e.message}`;
  }
}

function twice(fn) {
  return [fn(1), fn(2)];
}

function same(a, b) {
  return a === b;
}

module.exports = { Bus, each, compute, guarded, twice, same };