How to suppress warning with __FEATURE_ESM_BUNDLER_WARN__ ?

This might not be a bug, but maybe a missing part of the docs. I am using Vue 3 with Vue CLI and a vue.config.js. I had no luck adding it to chainWebpack like this, so how do I configure that flag?

  chainWebpack: config => {
    config.plugin('define').tap(args => {
      args[0] = {
         ...args[0],
         __FEATURE_ESM_BUNDLER_WARN__: false
      }
      return args
   })
  },

Module versions

• “vue”: “^3.0.0”,
• “vue-i18n”: “^9.0.0”,

[rstoenescu]

Hi,

I don’t think this is fixed yet. Even if one sets all the necessary flags, on dev it will show the warning regardless, and this is because of the following:

// extract from dist/vue-i18n.esm-bundler.js

if ((process.env.NODE_ENV !== 'production') && typeof true === 'boolean') {
    // in dev, it'll always get in here so it will trigger the warning
    needWarn = true;
}

The part with typeof true === 'boolean' is because the vue-i18n build script always replaces __FEATURE_ESM_BUNDLER_WARN__ with true (in the source code). As displayed in the rollup.config.js (__FEATURE_ESM_BUNDLER_WARN__: true, ~line 238).

[Oleksii14]

@Unkrass I have been importing vue-i18n incorrectly, now It’s fixed!