[Pkg-javascript-devel] Bug#1006378: pkg-js-tools: pkg-js-autopkgtest-require fails with type=module without default export

[Jonas Smedegaard]

Package: pkg-js-tools
Version: 0.12.9
Severity: important

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EcmaScript modules are supported since nodejs v12.20.0, as documented at
https://nodejs.org/api/esm.html#modules-ecmascript-modules (in the
"History" foldout).

EcmaScript modules can export functions in two ways, and only in one of
them will a default export exists:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/export#description

When pkg-js-tools detects that a Node.js library is an EcmaScript module
it runs a test with the assumption that a default export exists.

This fails for EcmaScript modules using named export.

An example is the module espree.

Upgrading Debian package node-espree requires _avoiding_ pkg-js-tools,
because the autopkgtest will fail and apparently cannot be overridden
(seems only additionally added tests can be overridden).

Setting severity=important due to the affect of upgradability of
existing packages.


 - Jonas

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