Interpolation broken by change in 3.13.1

Describe the bug We upgraded from LinguiJS 3.13.0 to 3.13.1 and started seeing many errors logged in the console, all looking like this:

Plurals for locale en aren't loaded. Use i18n.loadLocaleData method to load plurals for specific locale. Using other plural rule as a fallback. 

We are definitely loading the locale data though, so we investigated further.

Looking into the few changes in 3.13.1, the only significant commit seems to be f8f47a2. And ignoring the formatting changes in that commit, the only functional change that I can find is that it bypasses the property getters for locale, locales, and localeData when calling interpolate(). To be honest, I have no idea why that would have fixed the problem that a locale did not get immediately activated?

In any case, while bypassing the getters for locale and locales makes no functional difference, bypassing the getter for localeData seems to break the functionality. _localeData is of type AllLocaleData, but localeData is of type LocaleData, and the getter looks like this:

  get localeData(): LocaleData {
    return this._localeData[this._locale] ?? {}
  }

So really you can’t substitute localeData with _localeData as they are different things, causing the error inside the interpolate function.

To Reproduce

I am not sure if there’s anything specific required to trigger the error, as far as I can tell we’re using Lingui in a pretty basic way.

import {i18n, Messages} from '@lingui/core';
import {I18nProvider} from '@lingui/react';
import {en as enPlurals, type PluralCategory} from 'make-plural/plurals';
import {messages as enMessages} from '~/src/i18n/en.po';

i18n.loadLocaleData({
  en: {plurals: enPlurals},
});
i18n.load('en', enMessages);
i18n.activate('en');

function Foo() {
  return <Trans>Hello</Trans>;
}

Expected behavior The console shouldn’t be full of the above error 😃

Additional context

• jsLingui version 1.3.1
• Babel version @7.16.10
• Using @lingui/loader with Webpack 5.67.0

[semoal]

Damn, you’re right. Will push a fix today

[cmlenz]

Looks good now, thanks!