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							- let Declaration = require('../declaration')
 
- let flexSpec = require('./flex-spec')
 
- class JustifyContent extends Declaration {
 
-   /**
 
-    * Return property name by final spec
 
-    */
 
-   normalize() {
 
-     return 'justify-content'
 
-   }
 
-   /**
 
-    * Change property name for 2009 and 2012 specs
 
-    */
 
-   prefixed(prop, prefix) {
 
-     let spec
 
-     ;[spec, prefix] = flexSpec(prefix)
 
-     if (spec === 2009) {
 
-       return prefix + 'box-pack'
 
-     }
 
-     if (spec === 2012) {
 
-       return prefix + 'flex-pack'
 
-     }
 
-     return super.prefixed(prop, prefix)
 
-   }
 
-   /**
 
-    * Change value for 2009 and 2012 specs
 
-    */
 
-   set(decl, prefix) {
 
-     let spec = flexSpec(prefix)[0]
 
-     if (spec === 2009 || spec === 2012) {
 
-       let value = JustifyContent.oldValues[decl.value] || decl.value
 
-       decl.value = value
 
-       if (spec !== 2009 || value !== 'distribute') {
 
-         return super.set(decl, prefix)
 
-       }
 
-     } else if (spec === 'final') {
 
-       return super.set(decl, prefix)
 
-     }
 
-     return undefined
 
-   }
 
- }
 
- JustifyContent.names = ['justify-content', 'flex-pack', 'box-pack']
 
- JustifyContent.oldValues = {
 
-   'flex-end': 'end',
 
-   'flex-start': 'start',
 
-   'space-around': 'distribute',
 
-   'space-between': 'justify'
 
- }
 
- module.exports = JustifyContent
 
 
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