Error: Unknown object type "asyncfunction" in rollup-plugin-typescript2

[KrzysztofMadejski]

Version

5.0.0

Steps to reproduce

https://github.com/apache/incubator-echarts/wiki/How-to-setup-the-dev-environment

Called node build/build.js --watch, got:

i18n build completed
[1/5/2021, 1:34:05 PM] build bundle start
[1/5/2021, 1:34:22 PM] build error

PLUGIN_ERROR

Error: Unknown object type "asyncfunction"
    at Object._object (/Users/kmadejski/Projects/echarts/node_modules/rollup-plugin-typescript2/dist/rollup-plugin-typescript2.cjs.js:23697:17)

What is expected?

Project will build

What is actually happening?

Is not building

---

This is registered as ezolenko/rollup-plugin-typescript2#105, bumping version to 0.29.x resolved the issue, will send PR.

Question: What is the general approach to fix issue present in multiple versions. Do you:

• fix it in newest and backmerge
• fix in oldest supported version observed and cherry-picked in new?
• some other approach?

It would be good to document it in https://github.com/apache/incubator-echarts/wiki/How-to-make-a-pull-request.

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[KrzysztofMadejski]

It was present 2 days ago, today not anymore. I see rolloup-plugin-typescript was removed in 40b4c84#diff-7ae45ad102eab3b6d7e7896acd08c427a9b25b346470d7bc6507b6481575d519.

Anyhow now --watch option of node build/build.js --watch is not working anymore. It is mentioned on https://github.com/apache/incubator-echarts/wiki/How-to-setup-the-dev-environment