refactor: drop lodash for new-post-path filter

[SukkaW]

What does it do?

This PR is part of #3753

How to test

git clone -b drop-lodash-for-new-post-path https://github.com/sukkaw/hexo.git
cd hexo
npm install
npm test

Screenshots

Pull request tasks

• Add test cases for the changes.
• Passed the CI test.

[yoshinorin]

Sorry, it's wrong. Please do not merge yet.

if permalink_defaults is null exctption occure.

TypeError: Cannot convert undefined or null to object

I accidentally approved it.

[yoshinorin]

I think we should set the default value at new_post_path.js#L26.

const permalinkDefaults = config.permalink_defaults || '';

[SukkaW]

@yoshinorin

Maybe Object.assign({}, permalinkDefaults, filenameData) should be used? Then null will be ignored.

[yoshinorin]

Maybe Object.assign({}, permalinkDefaults, filenameData) should be used?

I think it's better than set default value :)

[coveralls]

Coverage decreased (-0.1%) to 97.169% when pulling 330d88b on SukkaW:drop-lodash-for-new-post-path into c48f6a8 on hexojs:master.

[coveralls]

Coverage decreased (-0.1%) to 97.169% when pulling 330d88b on SukkaW:drop-lodash-for-new-post-path into c48f6a8 on hexojs:master.