fix(#4917): suppress YAMLException when load js-yaml

[yoshinorin]

refs: (#4917)

This PR is just a workaround. Not sure, but I assume this error seems incorrect version resolving of js-yaml.

How to reproduce?

#4917 (comment)

// git clone & checkout
$ git clone https://github.com/hexojs/hexo-generator-category.git
$ git checkout -b issue-4917 f51949900e5dbd15902b45fe4399afb634d54b21
$ git log --oneline
  f519499 (HEAD -> issue-4917) chore(ci): migrate travisCI to GitHubActions (#70)
  f233a38 chore(deps): bump hexo-pagination from 1.0.0 to 2.0.0 (#46)
  fadee1a Upgrade to GitHub-native Dependabot (#45)

// hexo@5.4.0 will be installed
$ npm install

// install hexo@6.1.0
$ npm install hexo@6.1.0

// run test
$ npm run test

> hexo-generator-category@1.0.0 test
> mocha test/index.js

YAMLException: Specified list of YAML types (or a single Type object) contains a non-Type object.
    at /mnt/c/Users/username/development/hexo/hexo-generator-category/node_modules/hexo/node_modules/js-yaml/lib/schema.js:104:13
    at Array.forEach (<anonymous>)
    at Schema.extend (/mnt/c/Users/username/development/hexo/hexo-generator-category/node_modules/hexo/node_modules/js-yaml/lib/schema.js:102:12)
    at Object.<anonymous> (/mnt/c/Users/username/development/hexo/hexo-generator-category/node_modules/hexo/lib/plugins/renderer/yaml.js:5:36)
    at Module._compile (node:internal/modules/cjs/loader:1103:14)

Dependency tree

Here is the dependency tree after exec How to reproduce? section. Certainly, hexo@6.1.0 depends on js-yaml@4.1.0 and it seems no problem.

$ npm list js-yaml

hexo-generator-category@1.0.0 /mnt/c/Users/username/hexo/hexo-generator-category
├─┬ coveralls@3.1.1
│ └── js-yaml@3.14.1
├─┬ eslint@7.32.0
│ ├─┬ @eslint/eslintrc@0.4.3
│ │ └── js-yaml@3.14.1 deduped
│ └── js-yaml@3.14.1 deduped
├─┬ hexo@6.1.0
│ ├─┬ hexo-front-matter@3.0.0
│ │ └── js-yaml@4.1.0
│ └── js-yaml@4.1.0             <- should be use this. but not actually used???
├─┬ mocha@8.4.0
│ └── js-yaml@4.0.0
└─┬ nyc@15.1.0
  └─┬ @istanbuljs/load-nyc-config@1.1.0
    └── js-yaml@3.14.1 deduped

But, as you know exception occurs when run test. I'm not sure but it seems the require('js-yaml') resolves older than the 4.0.0 version of js-yaml..

I don't know which is the cause hexo, npm, or js-yaml.

Others

I'm going to release a patch version 6.1.1 & 5.4.1 if this PR accepts.

Pull request tasks

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

[github-actions]

How to test

git clone -b fix/issue-4917 https://github.com/yoshinorin/hexo.git
cd hexo
npm install
npm test

[coveralls]

Coverage decreased (-0.05%) to 98.056% when pulling 610bf40 on yoshinorin:fix/issue-4917 into 8d21027 on hexojs:master.