Direct usage of core-js-compat

[zloirock]

As I could see, copy of core-js-compat data used in swc version of preset-env is critically obsolete - 1.5 year. Each new version of core-js-compat contains updates engines support data,

// .swcrc:
{
  "env": {
    "targets": {
      "safari": "14"
    },
    "mode": "entry",
    "coreJs": "3.11"
  }
}
// input.js:
import 'core-js/stable';
// output.js:
import   "core-js/modules/es.typed-array.int32-array";
import   "core-js/modules/es.typed-array.from";
import   "core-js/modules/web.immediate";
import   "core-js/modules/web.url-search-params";
import   "core-js/modules/es.typed-array.uint32-array";
import   "core-js/modules/web.url";
import   "core-js/modules/es.typed-array.float64-array";
import   "core-js/modules/es.typed-array.uint8-array";
import   "core-js/modules/es.typed-array.int16-array";
import   "core-js/modules/es.typed-array.int8-array";
import   "core-js/modules/es.string.replace";
import   "core-js/modules/es.typed-array.uint8-clamped-array";
import   "core-js/modules/es.typed-array.float32-array";
import   "core-js/modules/web.url.to-json";
import   "core-js/modules/es.typed-array.of";
import   "core-js/modules/es.typed-array.uint16-array";
// expected:
import   "core-js/modules/web.immediate";

core-js-compat contains information about new modules and entry points. Without this information impossible to use it correctly - new modules will not be injected even if they are required.

// .swcrc:
{
  "env": {
    "targets": {
      "safari": "13"
    },
    "mode": "entry",
    "coreJs": "3.11"
  }
}
// input.js:
import 'core-js/stable/promise';
// output.js:
import   "core-js/modules/es.promise.finally";
import   "core-js/modules/web.dom-collections.iterator";
// expected:
import   "core-js/modules/es.aggregate-error";
import   "core-js/modules/es.promise.any";
import   "core-js/modules/es.promise.finally";
import   "core-js/modules/web.dom-collections.iterator";

Compat data should be updated even without swc updates for making possible to use actual core-js versions properly, so the only way to do it - usage of core-js-compat as a dependency.

[zloirock]

@kdy1 please, take a look at this since at this moment is used critically obsolete compact data from core-js@3.6 - 2019.12.19 - 2 years old.

[Austaras]

I don't believe use core-js-compat as a dependency would be a good idea -- it would cause much trouble in wasm. However, I believe it's good to include_str core-js-compat directly since it will always reside in node_modules/core-js-compat. @kdy1 what's your opinion?

[kdy1]

@Austaras I think you are right, it will make updating much easier.

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.