我收到参考错误
初始化之前无法访问“STRUCTURE_COLUMN_ID”
我有一个 StructureColumn 文件，其中包含以下内容：
import React from 'react';
import Column from './column';
export const STRUCTURE_COLUMN_ID = 'Structure';
export default class StructureColumn extends Column {
constructor(name) {
super(STRUCTURE_COLUMN_ID);
}
clone() {
return new StructureColumn(this.name);
}
getKey() {
return STRUCTURE_COLUMN_ID;
}
}当尝试从组件访问StructureColumn类或变量时，我收到上述错误。STRUCTURE_COLUMN_ID
该组件如下所示：
import React from 'react';
import { List, ListItem, Tooltip } from '@material-ui/core';
import { STRUCTURE_COLUMN_ID } from '../../../../models/structureColumn';
console.log(STRUCTURE_COLUMN_ID);
const CustomColumnsList = ({ onSelect }) => {
return (
<List>
{Object.values({}).map(col => (
<Tooltip …