process.env, global var, warning "plugin svelte: 'X' is not defined", plugin-replace

[frederikhors]

I'm using this in rollup.config.js:

import replace from 'rollup-plugin-replace';
...
const isProd = process.env.NODE_ENV === 'production';
...
replace({
  IS_PRODUCTION: isProd,
}),

and in my Svelte code like this ():

{#if !IS_PRODUCTION && failure}
  <p>{failure}</p>
{/if}

It works!

But I get an annoying warning in console during compilation:

(!) Plugin svelte: 'IS_PRODUCTION' is not defined
src\Router.svelte
101: {/if}
102:
103: {#if !IS_PRODUCTION && failure}

How to fix it?

[Conduitry]

Use the onwarn option to rollup-plugin-svelte to selectively suppress warnings. https://github.com/sveltejs/rollup-plugin-svelte#usage

[frederikhors]

There is no way to use comments instead?

Like eslint: /* global IS_PRODUCTION */?