target node14 uses spread polyfill

[reconbot]

Node14 supports the object spread syntax, however when bundling the __spreadValues helper is used instead.

config

build({
      entryPoints: ['index.ts],
      outfile: 'index.js',
      bundle: true,
      platform: 'node',
      minify: false,
      target: ['node14'],
    })

input

const foo = { a: 4}
const bar = { ...foo }

output

var __defProp = Object.defineProperty;
var __getOwnPropSymbols = Object.getOwnPropertySymbols;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __propIsEnum = Object.prototype.propertyIsEnumerable;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __spreadValues = (a, b) => {
  for (var prop in b || (b = {}))
    if (__hasOwnProp.call(b, prop))
      __defNormalProp(a, prop, b[prop]);
  if (__getOwnPropSymbols)
    for (var prop of __getOwnPropSymbols(b)) {
      if (__propIsEnum.call(b, prop))
        __defNormalProp(a, prop, b[prop]);
    }
  return a;
};

// ts-src/events/utility/index.ts
var foo = { a: 4 };
var bar = __spreadValues({}, foo);

[reconbot]

I did some digging and found a comment in the source code that lead to #951 which explains why we're not using object spread operators right now.