flow like the river

VISUALIZACION/node_modules/autoprefixer/lib/hacks/grid-start.js

@@ -0,0 +1,71 @@
+(function() {
+  var Declaration, GridStart,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  Declaration = require('../declaration');
+
+  GridStart = (function(superClass) {
+    extend(GridStart, superClass);
+
+    function GridStart() {
+      return GridStart.__super__.constructor.apply(this, arguments);
+    }
+
+    GridStart.names = ['grid-row-start', 'grid-column-start', 'grid-row', 'grid-column'];
+
+    GridStart.prototype.check = function(decl) {
+      return decl.value.indexOf('/') === -1 || decl.value.indexOf('span') !== -1;
+    };
+
+    GridStart.prototype.normalize = function(prop) {
+      return prop.replace('-start', '');
+    };
+
+    GridStart.prototype.prefixed = function(prop, prefix) {
+      if (prefix === '-ms-') {
+        return prefix + prop.replace('-start', '');
+      } else {
+        return GridStart.__super__.prefixed.call(this, prop, prefix);
+      }
+    };
+
+    GridStart.prototype.insert = function(decl, prefix, prefixes) {
+      var parts;
+      parts = this.splitValue(decl, prefix);
+      if (parts.length === 2) {
+        decl.cloneBefore({
+          prop: '-ms-' + decl.prop + '-span',
+          value: parts[1]
+        });
+      }
+      return GridStart.__super__.insert.call(this, decl, prefix, prefixes);
+    };
+
+    GridStart.prototype.set = function(decl, prefix) {
+      var parts;
+      parts = this.splitValue(decl, prefix);
+      if (parts.length === 2) {
+        decl.value = parts[0];
+      }
+      return GridStart.__super__.set.call(this, decl, prefix);
+    };
+
+    GridStart.prototype.splitValue = function(decl, prefix) {
+      var parts;
+      if (prefix === '-ms-' && decl.prop.indexOf('-start') === -1) {
+        parts = decl.value.split(/\s*\/\s*span\s+/);
+        if (parts.length === 2) {
+          return parts;
+        }
+      }
+      return false;
+    };
+
+    return GridStart;
+
+  })(Declaration);
+
+  module.exports = GridStart;
+
+}).call(this);