feat: migrate to native esm

[JounQin]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: 9294165

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@pkgr/es-modules	Minor
@pkgr/imagemin	Minor
@pkgr/rollup	Minor
@pkgr/umd-globals	Minor
@pkgr/utils	Minor
@pkgr/webpack	Patch

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[lgtm-com]

This pull request introduces 2 alerts when merging 8ae5c57 into fe6af2c - view on LGTM.com

new alerts:

• 1 for Useless assignment to local variable
• 1 for Invocation of non-function

[codecov]

Codecov Report

Merging #220 (9294165) into master (fe6af2c) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #220   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines           43        43           
  Branches        16        16           
=========================================
  Hits            43        43           

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