make config simpler

lib/api.js

@@ -2,10 +2,11 @@ import axios from 'axios'
 import debounce from 'lodash.debounce'
 import ms from 'ms'
 
-import getConfig from 'next/config'
-const { publicRuntimeConfig } = getConfig()
-
-const client = axios.create({ baseURL: publicRuntimeConfig.API_URL })
+const client = axios.create({
+  baseURL: `${
+    process.env.API_URL || process.env.NODE_ENV === 'production' ? '' : 'http://localhost:4000'
+  }/api`
+})
 
 const RATE_LIMIT_CODE = 420
 

next.config.js

@@ -1,8 +1,2 @@
 // const { PHASE_DEVELOPMENT_SERVER } = require('next/constants')
 // const withOffline = require('next-offline')
-
-module.exports = {
-  publicRuntimeConfig: {
-    API_URL: process.env.API_URL || 'http://localhost:4000'
-  }
-}