typo in eslint filter apply

[oklas]

@oklas This almost works, but there is one bug:

- if(rule.use && 0 < rule.use.filter(isRuleOfEslint)) return true
+ if(rule.use && 0 < rule.use.filter(isRuleOfEslint).length) return true

Otherwise, this function always returns false. You can easily test it like this:

module.exports = function override(config) {
    const configCopy = JSON.parse(JSON.stringify(config));

    aliasDangerous({
        ...configPaths('tsconfig.paths.json')
    })(config);

    console.log("These should be equivalent:")
    console.log(configCopy.module.rules[1].include);
    console.log(config.module.rules[1].include);

    return config;
}

Also note that you might have cache pollution and need to delete the .cache folder in node_modules. I opened a new PR with the fix for the fix and some documentation.

Originally posted by @JollyGoodHolly in oklas/react-app-rewire-alias#3 (comment)