fix: add hint for "universal" mode only (#10)

README.md

@@ -28,6 +28,8 @@
 
 ✓ ...and more! (see [http-proxy-middleware](https://github.com/chimurai/http-proxy-middleware) docs)
 
+⚠ Does not work in generated/static mode!
+
 ## Setup
 - Add `@nuxtjs/proxy` dependency using yarn or npm to your project
 - Add `@nuxtjs/proxy` to `modules` section of `nuxt.config.js`

lib/module.js

@@ -12,6 +12,10 @@ module.exports = function nuxtProxy (options) {
     return
   }
 
+  this.nuxt.hook('generate:before', () => {
+    consola.warn('This module does not work in generated mode')
+  })
+
   // Defaults
   const defaults = Object.assign(
     {

test/module.test.js

@@ -1,11 +1,50 @@
-const { Nuxt } = require('nuxt-edge')
-const request = require('request-promise-native')
+const { Nuxt, Generator, Builder } = require('nuxt-edge')
+const consola = require('consola')
 
+const request = require('request-promise-native')
 const config = require('./fixture/nuxt.config')
 
 const url = path => `http://localhost:3000${path}`
 const get = path => request(url(path))
 
+describe('warnings', () => {
+  let nuxt
+  let log
+
+  beforeEach(() => {
+    log = jest.fn()
+    consola.clear().add({ log })
+  })
+
+  afterEach(async () => {
+    await nuxt.close()
+  })
+
+  it('generate', async () => {
+    nuxt = new Nuxt(
+      Object.assign({}, config, {
+        render: {
+          ssr: false
+        },
+        proxy: {
+          '/proxy': url('/api'),
+          '/rewrite': {
+            target: url('/api'),
+            pathRewrite: { '^/rewrite': '' }
+          }
+        }
+      })
+    )
+    const generator = new Generator(nuxt, new Builder(nuxt))
+    await generator.initiate()
+    await generator.initRoutes()
+
+    const messageInExtendFunction = 'This module does not work in generated mode'
+    const consolaMessages = log.mock.calls.map(c => c[0].message)
+    expect(consolaMessages).toContain(messageInExtendFunction)
+  }, 30000)
+})
+
 describe('object mode', () => {
   let nuxt