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eb39fafa4f
includes a (minimal) working wrapper Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
107 lines
3.2 KiB
Markdown
107 lines
3.2 KiB
Markdown
# enforce position of line comments (line-comment-position)
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Line comments can be positioned above or beside code. This rule helps teams maintain a consistent style.
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```js
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// above comment
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var foo = "bar"; // beside comment
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```
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## Rule Details
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This rule enforces consistent position of line comments. Block comments are not affected by this rule. By default, this rule ignores comments starting with the following words: `eslint`, `jshint`, `jslint`, `istanbul`, `global`, `exported`, `jscs`, `falls through`.
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## Options
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This rule takes one argument, which can be a string or an object. The string settings are the same as those of the `position` property (explained below). The object option has the following properties:
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### position
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The `position` option has two settings:
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* `above` (default) enforces line comments only above code, in its own line.
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* `beside` enforces line comments only at the end of code lines.
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#### position: above
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Examples of **correct** code for the `{ "position": "above" }` option:
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```js
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/*eslint line-comment-position: ["error", { "position": "above" }]*/
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// valid comment
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1 + 1;
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```
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Examples of **incorrect** code for the `{ "position": "above" }` option:
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```js
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/*eslint line-comment-position: ["error", { "position": "above" }]*/
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1 + 1; // invalid comment
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```
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#### position: beside
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Examples of **correct** code for the `{ "position": "beside" }` option:
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```js
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/*eslint line-comment-position: ["error", { "position": "beside" }]*/
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1 + 1; // valid comment
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```
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Examples of **incorrect** code for the `{ "position": "beside" }` option:
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```js
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/*eslint line-comment-position: ["error", { "position": "beside" }]*/
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// invalid comment
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1 + 1;
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```
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### ignorePattern
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By default this rule ignores comments starting with the following words: `eslint`, `jshint`, `jslint`, `istanbul`, `global`, `exported`, `jscs`, `falls through`. An alternative regular expression can be provided.
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Examples of **correct** code for the `ignorePattern` option:
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```js
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/*eslint line-comment-position: ["error", { "ignorePattern": "pragma" }]*/
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1 + 1; // pragma valid comment
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```
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Examples of **incorrect** code for the `ignorePattern` option:
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```js
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/*eslint line-comment-position: ["error", { "ignorePattern": "pragma" }]*/
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1 + 1; // invalid comment
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```
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### applyDefaultIgnorePatterns
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Default ignore patterns are applied even when `ignorePattern` is provided. If you want to omit default patterns, set this option to `false`.
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Examples of **correct** code for the `{ "applyDefaultIgnorePatterns": false }` option:
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```js
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/*eslint line-comment-position: ["error", { "ignorePattern": "pragma", "applyDefaultIgnorePatterns": false }]*/
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1 + 1; // pragma valid comment
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```
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Examples of **incorrect** code for the `{ "applyDefaultIgnorePatterns": false }` option:
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```js
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/*eslint line-comment-position: ["error", { "ignorePattern": "pragma", "applyDefaultIgnorePatterns": false }]*/
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1 + 1; // falls through
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```
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**Deprecated:** the object property `applyDefaultPatterns` is deprecated. Please use the property `applyDefaultIgnorePatterns` instead.
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## When Not To Use It
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If you aren't concerned about having different line comment styles, then you can turn off this rule.
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## Compatibility
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**JSCS**: [validateCommentPosition](https://jscs-dev.github.io/rule/validateCommentPosition)
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