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87 lines
3.7 KiB
Markdown
87 lines
3.7 KiB
Markdown
# CONTRIBUTING to eslint-plugin-jsdoc
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## Testing changes locally
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You might try a TDD approach and add tests within the `test` directory,
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to try different configs, you may find it easier to try out changes in
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a separate local directory.
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You can run [`npm link`](https://docs.npmjs.com/cli/link) for this purpose,
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pointing from your project to this project. For example, while in your project
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root and with `eslint-plugin-jsdoc` as a sibling, run:
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```shell
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npm link ../eslint-plugin-jsdoc
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```
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## Building the project
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After running `npm install` to get the latest dependencies and devDependencies,
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you can run the following command to update the `dist` files, with `dist/index.js`
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being the `main` entrance point from `package.json`:
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```shell
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npm run build
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```
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## Coding standards
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The project follows ESLint rules from [`canonical`](https://www.npmjs.com/package/eslint-config-canonical)
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and testing follows its subconfig, `canonical/mocha`.
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## Testing
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Tests are expected. Each rule file should be in CamelCase (despite the rule names themselves being hyphenated) and should be added within `test/assertions` and then imported/required by
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`test/rules/index.js`.
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Each rule file should be an ESM default export of an object which has `valid` and `invalid` array properties containing the tests. Tests of each type should be provided.
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`parserOptions` will be `ecmaVersion: 6` by default, but tests can override `parserOptions`
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with their own.
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See ESLint's [RuleTester](https://eslint.org/docs/developer-guide/nodejs-api#ruletester)
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for more on the allowable properties (e.g., `code`, `errors` (for invalid rules),
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`options`, `settings`, etc.).
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Note that besides `npm test`, there is `npm run test-cov` which shows more
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detailed information on coverage. Coverage should be maintained at 100%, and
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if there are a few guards in place for future use, the code block in question
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can be ignored by being preceded by `/* istanbul ignore next */` (including
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for warnings where the block is never passed over (i.e., the block is always
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entered)). If you want to test without coverage at all, you can use
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`npm run test-no-cov`. To only test rules rather than other files, you
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can use `npm run test-index`.
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To test specific rules, you can supply a comma-separated list with the `--rule`
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flag passed to `test-index`, e.g., for `check-examples` and `require-example`:
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`npm run --rule=check-examples,require-example test-index`.
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You can further limit this by providing `--invalid` and/or `--valid` flags
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with a comma-separated list of 0-based indexes that you wish to include (also
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accepts negative offsets from the end, e.g., `-1` for the last item). For
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example, to check the first and third invalid tests of `check-examples`
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alon with the second valid test, you can run:
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`npm run --rule=check-examples --invalid=0,2 --valid=1 test-index`.
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## Requirements for PRs
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PRs should be mergeable, [rebasing](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
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first against the latest `master`.
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The number of commits will ideally be limited in number, unless extra commits
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can better show a progression of features.
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Commit messages should be worded clearly and the reason for any PR made clear
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by linking to an issue or giving a full description of what it achieves.
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## Merging
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We use [semantic-release](https://github.com/semantic-release/semantic-release)
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for preparing releases, so the commit messages (or at least the merge that
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brings them into `master`) must follow the
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[AngularJS commit guidelines](https://github.com/angular/angular.js/blob/master/DEVELOPERS.md#-git-commit-guidelines) with a special format such as `feat: describe new feature`
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in order for the releasing to occur and for the described items to be added
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to the release notes.
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