ECMAScript

Describe the feature

Related with swc-project/swc#3859.

We want to establish initial feature parity to existing @swc/cli to plan out migration with possible breaking changes.

These are initial flags we'd like to have.

• config
• config_file
• filename
• env_name
• ignore
• source_maps (https://github.com/swc-pro

ECMASCript feature

Implement Array.prototype [ @@unscopables ]. ECMAScript specification.

I will create a new project for this epic and several tickets related to it.

Please add comments or upvote the tickets of interest for you!

Discussed in asciidwango/js-primer#1387

var $; // OK: $が利用できる
var _title; // OK: _が利用できる
var jquery; // OK: 小文字のアルファベットが利用できる
var TITLE