[英]503 Error when switching node.js deployment from server.js to index.js (beginner)
[英]Node.JS module error - Is not a function when calling it from my index.js
我正在尝试使用新创建的 Node.JS 模块,但我收到一条错误消息: "Is not a function"
。
lib/weather.mjs
My module's code is below:
// Gets the weather of a given location
import fetch from 'node-fetch';
var latLongAirports = [{
"name": "Madrid",
"iata": "MAD",
"lat": 40.49565434242003,
"long": -3.574541319609411,
},{
"name": "Los Angeles",
"iata": "LAX",
"lat": 33.93771087455066,
"long": -118.4007447751959,
},{
"name": "Mexico City",
"iata": "MEX",
"lat": 19.437281814699613,
"long": -99.06588831304731,}]
export default function getTemperature (iata){
async (dispatch) =>{
let data = latLongAirports.find(el => el.iata === iata);
var url = "http://www.7timer.info/bin/api.pl?lon=" + data.long + "&lat=" + data.lat + "&product=astro&output=json"
const response = await fetch(url);
const myJson = await response.json();
return myJson.dataseries[0].temp2m
}
}
这就是我尝试从main.js 中使用它的方式
import weather from './lib/weather.mjs'
var temperature = weather.getTemperature("MEX")
我在这里做错了什么? 我应该如何声明和使用这样的自写模块?
谢谢!
weather.mjs
正在导出函数。 所以你在main.js
得到的是实际的函数。
在您的main.js
您应该调用导出的方法,例如
import getTemperature from './lib/weather.mjs'
var temperature = getTemperature("MEX")
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