allow sending certain errors to the user

this is useful because:

      // onedrive gives some errors here that the user might want to know about
      // e.g. these happen if you try to login to a users in an organization,
      // without an Office365 licence or OneDrive account setup completed
      // 400: Tenant does not have a SPO license
      // 403: You do not have access to create this personal site or you do not have a valid license

packages/@uppy/companion/src/server/provider/providerErrors.js

@@ -1,7 +1,10 @@
 const logger = require('../logger')
-const { ProviderApiError, ProviderAuthError } = require('./error')
+const { ProviderApiError, ProviderUserError, ProviderAuthError } = require('./error')
 
-async function withProviderErrorHandling ({ fn, tag, providerName, isAuthError = () => false, getJsonErrorMessage }) {
+async function withProviderErrorHandling ({
+  // eslint-disable-next-line no-unused-vars
+  fn, tag, providerName, isAuthError = () => false, isUserFacingError = (response) => false, getJsonErrorMessage,
+}) {
   function getErrorMessage (response) {
     if (typeof response.body === 'object') {
       const message = getJsonErrorMessage(response.body)
@@ -25,6 +28,7 @@ async function withProviderErrorHandling ({ fn, tag, providerName, isAuthError =
     if (response) {
       // @ts-ignore
       if (isAuthError(response)) err2 = new ProviderAuthError()
+      if (isUserFacingError(response)) err2 = new ProviderUserError({ message: getErrorMessage(response) })
       else err2 = new ProviderApiError(getErrorMessage(response), response.statusCode)
     }
 

packages/@uppy/provider-views/src/ProviderView/ProviderView.jsx

@@ -187,6 +187,13 @@ export default class ProviderView extends View {
         this.plugin.setPluginState({ folders, files, breadcrumbs, filterInput: '' })
       })
     } catch (err) {
+      // This is the first call that happens when the provider view loads, after auth, so it's probably nice to show any
+      // error occurring here to the user.
+      if (err instanceof UserFacingApiError) {
+        this.plugin.uppy.info({ message: this.plugin.uppy.i18n(err.message) }, 'warning', 5000)
+        return
+      }
+
       this.handleError(err)
     } finally {
       this.setLoading(false)