import-alias.js

module.exports = {
    meta: {
        type: "problem",
        docs: {
            description: "replace certain import paths with aliased paths",
            category: "Stylistic Issues",
            recommended: false,
        },
        fixable: "code",
        schema: []
    },

    create(context) {
        return {
            ImportDeclaration(node) {
                const sourceValue = node.source.value;

                if (sourceValue === "@tver-palm/whyelse-ui") {
                    context.report({
                        node: node.source,
                        message: "Use the aliased path '@ui' for importing from '@tver-palm/whyelse-ui'",
                        fix(fixer) {
                            return fixer.replaceText(node.source, "'@ui'");
                        }
                    });
                }
            }
        };
    }
};

test-import-alias.js

const rule = require("../../../lib/rules/import-alias");
const { RuleTester } = require('eslint');

const ruleTester = new RuleTester({
    parserOptions: { ecmaVersion: 2020, sourceType: "module" }
});

ruleTester.run('import-alias', rule, {
    valid: [
        { code: 'import Button from "@ui";' }
    ],
    invalid: [
        {
            code: 'import Button from "@tver-palm/whyelse-ui";',
            output: 'import Button from "@ui";',
            errors: [
                { message: "Use the aliased path '@ui' for importing from '@tver-palm/whyelse-ui'" }
            ]
        }
    ]
});