Unexpected behavior on extending config with rule 'type-enum'

[imrekq]

Expected Behavior

On extending config with rule type-enum should be capaility override this rule

Current Behavior

I has package with rules extending @commitlint/config-conventional. When I try use him in project that: 1) rule type-enum is a concatenation @commitlint/config-conventional and @ptsecurity/commitlint-config
2) on trying do commit with a wrong type that display this concatenation
type must be one of [feat, fix, docs, refactor, test, perf, bump, chore, revert, style, test] [type-enum]

Affected packages

• cli
• core
• prompt
• config-angular

Possible Solution

Steps to Reproduce (for bugs)

1. Clone prepared repo https://github.com/imrekb/issue-concatenation-type-enum
2. Try execute commit with message wrong: blah-blah
3. Display unexpected enum is concatenation @commitlint/config-conventional and @ptsecurity/commitlint-config

commitlint.config.js

module.exports = {
    extends: ['@ptsecurity/commitlint-config'],
    rules: {
        'scope-enum': [
            2,
            'always',
            [
                // as examples
                'app',
                'common'
            ]
        ]
    }
};

Context

Your Environment

Executable	Version
commitlint --version	7.2.1
git --version	2.17.1
node --version	8.11.2

[marionebl]

That's lodash acting up on this. We should prob. use mergeWith and pass a costumizer fn to handle string[] merges differently:

• https://github.com/marionebl/commitlint/blob/master/%40commitlint/load/src/index.js#L20
• https://github.com/marionebl/commitlint/blob/master/%40commitlint/resolve-extends/src/index.js#L13
• https://github.com/marionebl/commitlint/blob/master/%40commitlint/resolve-extends/src/index.js#L42

[imrekq]

https://github.com/marionebl/commitlint/pull/539

[marionebl]

#539 landed and released with 7.4 and higher