Why string.replaceAll was polyfilled by esnext.string.replaceAll when setting useBuiltIns: entry

[maoxiaoke]

Here is my @babel/preset-env settings:

{
    "presets": [
    [
      "@babel/preset-env",
      {
        "useBuiltIns": "usage",
	 "corejs": 3
      }
    ]
  ],
  "targets": {
    "chrome": "58",
    "ie": "11"
  }
}

And I found usageGlobal inject polyfill within esnext.string.replaceAll as fallback, while entryGlobal not.

I'm really curious about this. Could someone explain this to me?

[zloirock]

What about corejs: '3.19'?