vue hello world项目
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let Declaration = require('../declaration')
let utils = require('./grid-utils')
class PlaceSelf extends Declaration {
/**
* Translate place-self to separate -ms- prefixed properties
*/
insert(decl, prefix, prefixes) {
if (prefix !== '-ms-') return super.insert(decl, prefix, prefixes)
// prevent doubling of prefixes
if (decl.parent.some(i => i.prop === '-ms-grid-row-align')) {
return undefined
}
let [[first, second]] = utils.parse(decl)
if (second) {
utils.insertDecl(decl, 'grid-row-align', first)
utils.insertDecl(decl, 'grid-column-align', second)
} else {
utils.insertDecl(decl, 'grid-row-align', first)
utils.insertDecl(decl, 'grid-column-align', first)
}
return undefined
}
}
PlaceSelf.names = ['place-self']
module.exports = PlaceSelf