Initial commit

This commit is contained in:
Patrick Marsceill
2017-03-09 13:16:08 -05:00
commit b7b0d0d7bf
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# media-feature-name-blacklist
Specify a blacklist of disallowed media feature names.
```css
@media (min-width: 700px) {}
/** ↑
* These media feature names */
```
**Caveat:** Media feature names within a range context are currently ignored.
## Options
`array|string|regex`: `["array", "of", "unprefixed", "media-features" or "regex"]|"media-feature"|/regex/`
Given:
```js
["max-width", "/^my-/"]
```
The following patterns are considered warnings:
```css
@media (max-width: 50em) {}
```
```css
@media (my-width: 50em) {}
```
The following patterns are *not* considered warnings:
```css
@media (min-width: 50em) {}
```
```css
@media print and (min-resolution: 300dpi) {}
```

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"use strict"
const atRuleParamIndex = require("../../utils/atRuleParamIndex")
const isCustomMediaQuery = require("../../utils/isCustomMediaQuery")
const isRangeContextMediaFeature = require("../../utils/isRangeContextMediaFeature")
const isStandardSyntaxMediaFeatureName = require("../../utils/isStandardSyntaxMediaFeatureName")
const matchesStringOrRegExp = require("../../utils/matchesStringOrRegExp")
const report = require("../../utils/report")
const ruleMessages = require("../../utils/ruleMessages")
const validateOptions = require("../../utils/validateOptions")
const _ = require("lodash")
const mediaParser = require("postcss-media-query-parser").default
const ruleName = "media-feature-name-blacklist"
const messages = ruleMessages(ruleName, {
rejected: name => `Unexpected media feature name "${name}"`,
})
const rule = function (blacklist) {
return (root, result) => {
const validOptions = validateOptions(result, ruleName, {
actual: blacklist,
possible: [_.isString],
})
if (!validOptions) {
return
}
root.walkAtRules(/^media$/i, atRule => {
mediaParser(atRule.params).walk(/^media-feature$/i, mediaFeatureNode => {
const parent = mediaFeatureNode.parent,
sourceIndex = mediaFeatureNode.sourceIndex,
value = mediaFeatureNode.value
if (isRangeContextMediaFeature(parent.value) || !isStandardSyntaxMediaFeatureName(value) || isCustomMediaQuery(value)) {
return
}
if (!matchesStringOrRegExp(value.toLowerCase(), blacklist)) {
return
}
report({
index: atRuleParamIndex(atRule) + sourceIndex,
message: messages.rejected(value),
node: atRule,
ruleName,
result,
})
})
})
}
}
rule.ruleName = ruleName
rule.messages = messages
module.exports = rule