Validate to work your application on IE11 using webpack plugin

Building a webpack plugin to validate your bundle files for IE11 I guess most developers don’t use IE11 as their developer environment. But we often have to support IE11 as an environment for our applications. These days, we write application code using TypeScript, ES2020, or JSX and compile them to ES5 JavaScript, so we don’t have to care about what ECMAScript features our support browsers suppor

[akymrk]

ie11

[nc44v-134-nvtyqfgq]

ビルド時にES5のnpmパッケージが含まれてるか判定するwebpackプラグインを作った話。webpackプラグインの、作り方とテストの方法が紹介されている。

[Shisama]

acorn のパース関数にesのバージョン渡せるの知らんかった