Can't load ESM modules in config

Open

#3,003 opened on Aug 17, 2021 12 comments 2 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 35/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Stale
Tech stack: node.js, typescript
Domain: build-system, tooling

Research direction

Reproduce the failure from a stencil.config.ts that imports and uses globby@12, then inspect how the Stencil config is loaded. Confirm the build succeeds when an ESM module is imported from the config without the ERR_REQUIRE_ESM failure.

Written by the indexing model from the issue text.

Description

Resolution: Refine

Stencil version:

 @stencil/core@2.6.0

I'm submitting a:

[x] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://stencil-worldwide.herokuapp.com/ or https://forum.ionicframework.com/

Current behavior:

When trying to import a ESM module in the config file (in my example, globby), the build fails with:

[ ERROR ]  Error [ERR_REQUIRE_ESM]: require() of ES Module
           C:\Git\PolicyStaging.WebComponents\node_modules\globby\index.js from
           C:\Git\PolicyStaging.WebComponents\build\stencil\icu\gen\dts.ts not supported. Instead change the require of
           index.js in C:\Git\PolicyStaging.WebComponents\build\stencil\icu\gen\dts.ts to a dynamic import() which is
           available in all CommonJS modules.

Expected behavior:

The build should work as expected.

Steps to reproduce:

Create a stencil.config.ts, import and use globby@12 from it.

Dominant language: TypeScript
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Forks: 855
Avg merge: 4h 7m
Merged PRs (30d): 44

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