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							- let Declaration = require('../declaration')
 
- class GridStart extends Declaration {
 
-   /**
 
-    * Do not add prefix for unsupported value in IE
 
-    */
 
-   check(decl) {
 
-     let value = decl.value
 
-     return !value.includes('/') && !value.includes('span')
 
-   }
 
-   /**
 
-    * Return a final spec property
 
-    */
 
-   normalize(prop) {
 
-     return prop.replace('-start', '')
 
-   }
 
-   /**
 
-    * Change property name for IE
 
-    */
 
-   prefixed(prop, prefix) {
 
-     let result = super.prefixed(prop, prefix)
 
-     if (prefix === '-ms-') {
 
-       result = result.replace('-start', '')
 
-     }
 
-     return result
 
-   }
 
- }
 
- GridStart.names = ['grid-row-start', 'grid-column-start']
 
- module.exports = GridStart
 
 
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