spliffone commented on issue #20554:
URL: https://github.com/apache/echarts/issues/20554#issuecomment-2998956105
We face a similar issue after upgrading to Angular 20 which come with a new
typescript version 5.8.0. The `ng build` is failing with the following error:
```bash
✘ [ERROR] TS1203: Export assignment cannot be used when targeting ECMAScript
modules. Consider using 'export default' or another module format instead.
[plugin angular-compiler]
node_modules/echarts/index.d.ts:23:0:
23 │ export = echarts;
╵ ~~~~~~~~~~~~~~~~~
```
Since we use bundler with target es2022 the only workaround I found is to
add `skipLibCheck`:
```json
{
...
"compilerOptions": {
"module": "es2022",
"moduleResolution": "Bundler",
"target": "es2022",
"skipLibCheck": true,
...
}
}
```
But I believe it is better to adjust the types file
`https://github.com/apache/echarts/blob/master/index.d.ts`:
```diff
...
- import * as echarts from './types/dist/echarts';
+ export * from './types/dist/echarts'
// Export for UMD module.
export as namespace echarts;
- export = echarts;
```
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