fix(types): remove export assignment to support typescript esm compatibility

[akashsonune]

See https://github.com/apache/echarts/issues/21250

Brief Information

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• [x] bug fixing
• [ ] new feature
• [ ] others

What does this PR do?

Fixed issues

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After: How does it behave after the fixing?

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• [x] This PR doesn't relate to document changes
• [ ] The document should be updated later
• [ ] The document changes have been made in apache/echarts-doc#xxx

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• [ ] This PR uses security-sensitive Web APIs.

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• [ ] This PR depends on ZRender changes (ecomfe/zrender#xxx).

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[echarts-bot[bot]]

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[akashsonune]

@Ovilia Can you take a look at the PR 🙇

[akashsonune]

@100pah @Ovilia any update on this PR

[100pah]

@akashsonune Thank you for this contribution. I made some modification based on your code, including:

• Separated ESM and CJS(UMD) TS entries:

  • echarts has been providing a UMD bundle (echarts/dist/echarts.js) as one of the default entries, and index.d.ts has been corresponding to it, where statements export = echarts and export as namespace echarts provide types for the UMD bundle. However, they effectively mismatches the ESM entry. tsc no longer tolerates this mismatch since TS v5.6 and reports error TS1203. Therefore, ESM entries and UMD entries are separately provided.

• Explicit file extensions:

  • Previously echarts used extensionless path in DTS, e.g., "from "echarts/types/dist/core". However, explicit file extensions are required when package.json uses "type": "module" and tsconfig.json uses "moduleResolution": "NodeNext"; otherwise TS error TS2834 occurs.
  • This new modification uses pseudo .js to redirect to .d.ts, e.g., export {some} from "echarts/types/dist/core.js". If using "from "echarts/types/dist/core.d.ts", TS error TS2846 occurs.

• Avoid duplicated type declarations:

  • Previously in echarts/type/echarts.d.ts and echarts/type/dist/shared.d.ts types are defined in duplicate. It causes issues:
    • issue1:

      import {use} from 'echarts';
      import {BarChart} from 'echarts/charts';
      use([BarChart]);
      // TS error TS2442 may throws.
      // Although this usage is not recommended officially, misuse may occur.
      

    • issue2:

      import {use as use1} from 'echarts';
      import {use as use2} from 'echarts/core';
      import {violinCustomSeriesInstaller} from '@echarts-x/custom-violin';
      // Now how to make type for `violinCustomSeriesInstaller` to support
      // both and TS2442 does not occur?
      use1(violinCustomSeriesInstaller);
      use2(violinCustomSeriesInstaller);
      

  • In this new modification, echarts/type/dist/all.d.ts echarts/type/dist/core.d.ts echarts/type/dist/option.d.ts echarts/type/dist/features.d.ts echarts/type/dist/components.d.ts echarts/type/dist/charts.d.ts echarts/type/dist/renderers.d.ts import type declarations from a single source echarts/types/dist/shared.d.ts.

• CJS and ESM interop under "NodeNext":

  • TSv4.7~TSv5.7 disallows require a ESM file from a CJS file when moduleResolution: "NodeNext" (introduced in TSv4.7); otherwise TS error TS1471 may arise. Therefore, the new modification use echarts.d.cts instead of d.ts for CJS case, and make it self-contained to avoid importing ESM from CJS DTS.

Close #21250 , Close #20554

[echarts-bot[bot]]

Congratulations! Your PR has been merged. Thanks for your contribution! 👍