mirror of https://github.com/thangisme/notes.git
87 lines
2.1 KiB
Markdown
87 lines
2.1 KiB
Markdown
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# declaration-property-value-whitelist
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Specify a whitelist of allowed property and value pairs within declarations.
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```css
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a { text-transform: uppercase; }
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/** ↑ ↑
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* These properties and these values */
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```
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## Options
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`object`: `{
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"unprefixed-property-name": ["array", "of", "values"],
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"unprefixed-property-name": ["/regex/", "non-regex"]
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}`
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If a property name is found in the object, only its whitelisted property values are allowed. This rule complains about all non-matching values. (If the property name is not included in the object, anything goes.)
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If a property name is surrounded with `"/"` (e.g. `"/^animation/"`), it is interpreted as a regular expression. This allows, for example, easy targeting of shorthands: `/^animation/` will match `animation`, `animation-duration`, `animation-timing-function`, etc.
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The same goes for values. Keep in mind that a regular expression value is matched against the entire value of the declaration, not specific parts of it. For example, a value like `"10px solid rgba( 255 , 0 , 0 , 0.5 )"` will *not* match `"/^solid/"` (notice beginning of the line boundary) but *will* match `"/\\s+solid\\s+/"` or `"/\\bsolid\\b/"`.
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Be careful with regex matching not to accidentally consider quoted string values and `url()` arguments. For example, `"/red/"` will match value such as `"1px dotted red"` as well as `"\"foo\""` and `"white url(/mysite.com/red.png)"`.
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Given:
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```js
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{
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"transform": ["/scale/"],
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"whitespace": ["nowrap"],
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"/color/": ["/^green/"]
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}
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```
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The following patterns are considered warnings:
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```css
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a { whitespace: pre; }
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```
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```css
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a { transform: translate(1, 1); }
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```
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```css
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a { -webkit-transform: translate(1, 1); }
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```
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```css
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a { color: pink; }
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```
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```css
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a { background-color: pink; }
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```
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The following patterns are *not* considered warnings:
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```css
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a { color: pink; }
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```
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```css
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a { whitespace: nowrap; }
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```
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```css
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a { transform: scale(1, 1); }
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```
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```css
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a { -webkit-transform: scale(1, 1); }
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```
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```css
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a { color: green; }
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```
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```css
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a { background-color: green; }
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```
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```css
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a { background: pink; }
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```
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