Eslint-plugin-import: no-cycle rule not working with babel-eslint parser

[jer-sen]

Here is a simple repro:

package.json

{
  "dependencies": {
    "babel-eslint": "^9.0.0",
    "eslint": "^5.4.0",
    "eslint-plugin-import": "^2.14.0"
  }
}

.eslintrc

{
    parser: "babel-eslint",
    parserOptions: {
        sourceType: 'module',
    },
    plugins: ['import'],
    rules: { 'import/no-cycle': 'error' },
}

a.js

import B from './b';
export default "A" + B;

b.js

import A from './a';
export default A + "B";

No error is found by eslint but if default parser is used (by removing line parser: "babel-eslint",) then no-cycle errors are found in each file.

Is it the expected behaviour ? An issue with eslint-plugin-import ? An issue with babel-eslint ?

[edmorley]

I encountered this too.

Inspecting sourceNode in the babel-parser case, _babelType is 'Literal', which means this rule is being skipped by:
https://github.com/benmosher/eslint-plugin-import/blob/e8954dbaacd9590a8c46e3fc8ba31056576302cd/src/rules/no-cycle.js#L37-L39

If I comment that return out, then the no-cycle errors are reported as expected.

It was added in #1126 to fix #1098, though perhaps is not needed for ESLint 5 any more?
@gajus I don't suppose you can remember why it was needed? :-)

[gajus]

If I comment that return out, the the no-cycle errors are reported as expected.

It was added for support of ESLint <5.

[edmorley]

Ok, but the rule is now being skipped for ESLint 5 too. Should we just version-check, or can you remember more specifically what was missing, so that we can feature detect that instead?

[gajus]

Do not remember more specifically.

[bora89]

Hey guys, any progress on this? We experience the same issue, with babel parser no-cycle does not work