[英]Can't use ES6 import syntax
I'm trying to use the ES6 import syntax and keep running into errors. 我正在尝试使用ES6导入语法,并继续遇到错误。 This is my data type,
这是我的数据类型
class UnionFind{
constructor(n){
this.items = n;
}
union(p, q){
}
connected(p, q){
}
find(p){
}
count(){
}
}
export default UnionFind
Saved in a file UnionFind.js 保存在文件UnionFind.js中
This the calling client, 这个主叫客户,
import { UnionFind } from './unionFind';
const readline = require('readline');
const rl = readline.createInterface({
input:process.stdin,
output:process.stdout,
terminal:false
});
uf = new UnionFind(10)
rl.on('numbers', function (line) {
arr = number.split(' ')
console.log(arr);
});
This is saved in a file client.mjs 这保存在文件client.mjs中
This is how I'm running it, 这就是我的运行方式
node --experimental-modules union-find/client.mjs
I get the following error, 我收到以下错误,
(node:13465) ExperimentalWarning: The ESM module loader is experimental.
file:///Users/mstewart/Dropbox/data-structures-algorithms-princeton/union-find/client.mjs:1
import { UnionFind } from './unionFind';
^^^^^^^^^
SyntaxError: The requested module does not provide an export named 'UnionFind'
at ModuleJob._instantiate (internal/modules/esm/ModuleJob.js:89:21)
at <anonymous>
What am I doing wrong here? 我在这里做错了什么?
In this case, use 在这种情况下,请使用
import UnionFind from './UnionFind.js';
if you declared 如果你宣布
export class UnionFind{ ....
then you use 然后你用
import { UnionFind } from './UnionFind.js';
Also take a look at the file name: UnionFind.js . 还要看看文件名:UnionFind.js。 You are using './unionFind'.
您正在使用“ ./unionFind”。 This is case sensitive
这是区分大小写的
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