createNext method ignores runtime basePath property

[reinisp]

Versions

• nuxt: v2.15.7
• node: v14.17.3

Reproduction

Additional Details

  const $config = ssrContext.runtimeConfig || {}
  const routerBase = ($config._app && $config._app.basePath) || '<%= router.base %>'

snippet from https://github.com/nuxt/nuxt.js/blob/dev/packages/vue-app/template/server.js#L62 always fallback to '<%= router.base %>' as $config._app is always undefined.
It could be accessed either from $config.public._app.basePath or $config.private._app.basePath

Steps to reproduce

What is Expected?

When using redirect('/some-path') on server side it reads basePath property from runtimeConfig if exists

What is actually happening?

When using redirect('/some-path') on server side it always prepends route.base property defined un build

[reinisp]

Current workaround by adding hook:

    'vue-renderer:ssr:prepareContext': (ssrContext) => {
      const { runtimeConfig } = ssrContext;

      if (runtimeConfig && !runtimeConfig._app && runtimeConfig.public?._app) {
        runtimeConfig._app = runtimeConfig.public._app;
      }
    },

[Atinux]

Thank you for your bug report. Do you mind opening a PR please?

[stale]

Thanks for your contribution to Nuxt!
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