Question

所以我正在尝试实现elasticsearch

const express = require('express');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const hbs = require('hbs');
const expressValidator = require('express-validator');
const flash = require('connect-flash');
const session = require('express-session');
const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;
const mongoose = require('mongoose');
const fs = require('fs');

const sslRedirect = require('heroku-ssl-redirect');
const elasticsearch = require('elasticsearch');

var app = express();

// elasticsearch
var connectionString = process.env.SEARCHBOX_URL;
var client = new elasticsearch.Client({
  if (process.env.NODE_ENV === 'production') {
    hosts: connectionString
  } else {
    hosts: ['http://localhost:9200']
  }
});

client.ping({
  requestTimeout: 30000,
}, function(error) {
  if (error) {
    console.error('elasticsearch cluster is down!');
  } else {
    console.log('Everything is ok');
  }
});

但是我收到以下错误。

if (process.env.NODE_ENV === 'production') {
           ^

SyntaxError: Unexpected token .

我已经看过我如何在各个地方获得环境，而且我也是这样做的。所以不确定为什么错误会在这里抛出。

Answer 1

您的语法无效。如果您需要有条件使用ternary operator：

const isProduction = process.env.NODE_ENV === 'production'
const client = new elasticsearch.Client({
  hosts: isProduction ? connectionString : ['http://localhost:9200']
});

SyntaxError：意外的令牌。在尝试获取process.env node.js

1 个答案: