feat: warn when font weights are not available

[qwerzl]

This pull request warns users when some of the font weights are not available, or throws an error when none of the font weights are available (as the latter situation causes a 400 error with an empty array).

[danielroe]

Nice idea! Do you have an example of a setup that would trigger this?

[qwerzl]

@danielroe Sure. If you add weights: [500, 700] to the config in playground, it would be triggered.

Total config is as belows:

export default defineNuxtConfig({
  modules: ['@nuxt/fonts', '@nuxtjs/tailwindcss', '@unocss/nuxt'],
  unocss: {
    disableNuxtInlineStyle: false,
  },
  fonts: {
    providers: {
      custom: '~/providers/custom'
    },
    families: [
      { name: 'Abel', provider: 'bunny' },
      { name: 'Satoshi', provider: 'fontshare' },
      { name: 'Kode Mono', provider: 'none' },
      { name: 'MyCustom', src: '/custom-font.woff2' },
      { name: 'CustomGlobal', global: true, src: '/font-global.woff2' },
      { name: 'Oswald', fallbacks: ['Times New Roman'] },
    ],
    defaults: {
      weights: [500, 700],
      fallbacks: {
        monospace: ['Tahoma']
      }
    }
  },
})

[danielroe]

Thank you for this!

Let's go ahead without logging errors but moving on to the next provider and warning if a custom configuration has produced the error. It's tricky to know how verbose to be when logging missing fonts but this is something we can iterate on.