Initial commit

node_modules/autoprefixer/lib/supports.js

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+(function() {
+  var Browsers, Supports, Value, brackets, browser, data, postcss, ref, support, supported, utils, version, versions;
+
+  Browsers = require('./browsers');
+
+  brackets = require('./brackets');
+
+  Value = require('./value');
+
+  utils = require('./utils');
+
+  postcss = require('postcss');
+
+  supported = [];
+
+  data = require('caniuse-db/features-json/css-featurequeries.json');
+
+  ref = data.stats;
+  for (browser in ref) {
+    versions = ref[browser];
+    for (version in versions) {
+      support = versions[version];
+      if (/y/.test(support)) {
+        supported.push(browser + ' ' + version);
+      }
+    }
+  }
+
+  Supports = (function() {
+    function Supports(Prefixes, all1) {
+      this.Prefixes = Prefixes;
+      this.all = all1;
+    }
+
+    Supports.prototype.prefixer = function() {
+      var browsers, filtered;
+      if (this.prefixerCache) {
+        return this.prefixerCache;
+      }
+      filtered = this.all.browsers.selected.filter((function(_this) {
+        return function(i) {
+          return supported.indexOf(i) !== -1;
+        };
+      })(this));
+      browsers = new Browsers(this.all.browsers.data, filtered, this.all.options);
+      return this.prefixerCache = new this.Prefixes(this.all.data, browsers, this.all.options);
+    };
+
+    Supports.prototype.parse = function(str) {
+      var prop, ref1, value;
+      ref1 = str.split(':'), prop = ref1[0], value = ref1[1];
+      value || (value = '');
+      return [prop.trim(), value.trim()];
+    };
+
+    Supports.prototype.virtual = function(str) {
+      var prop, ref1, rule, value;
+      ref1 = this.parse(str), prop = ref1[0], value = ref1[1];
+      rule = postcss.parse('a{}').first;
+      rule.append({
+        prop: prop,
+        value: value,
+        raws: {
+          before: ''
+        }
+      });
+      return rule;
+    };
+
+    Supports.prototype.prefixed = function(str) {
+      var decl, j, k, len, len1, prefixer, ref1, ref2, rule, value;
+      rule = this.virtual(str);
+      if (this.disabled(rule.first)) {
+        return rule.nodes;
+      }
+      prefixer = this.prefixer().add[rule.first.prop];
+      if (prefixer != null) {
+        if (typeof prefixer.process === "function") {
+          prefixer.process(rule.first);
+        }
+      }
+      ref1 = rule.nodes;
+      for (j = 0, len = ref1.length; j < len; j++) {
+        decl = ref1[j];
+        ref2 = this.prefixer().values('add', rule.first.prop);
+        for (k = 0, len1 = ref2.length; k < len1; k++) {
+          value = ref2[k];
+          value.process(decl);
+        }
+        Value.save(this.all, decl);
+      }
+      return rule.nodes;
+    };
+
+    Supports.prototype.isNot = function(node) {
+      return typeof node === 'string' && /not\s*/i.test(node);
+    };
+
+    Supports.prototype.isOr = function(node) {
+      return typeof node === 'string' && /\s*or\s*/i.test(node);
+    };
+
+    Supports.prototype.isProp = function(node) {
+      return typeof node === 'object' && node.length === 1 && typeof node[0] === 'string';
+    };
+
+    Supports.prototype.isHack = function(all, unprefixed) {
+      var check;
+      check = new RegExp('(\\(|\\s)' + utils.escapeRegexp(unprefixed) + ':');
+      return !check.test(all);
+    };
+
+    Supports.prototype.toRemove = function(str, all) {
+      var checker, j, len, prop, ref1, ref2, ref3, unprefixed, value;
+      ref1 = this.parse(str), prop = ref1[0], value = ref1[1];
+      unprefixed = this.all.unprefixed(prop);
+      if (((ref2 = this.all.cleaner().remove[prop]) != null ? ref2.remove : void 0) && !this.isHack(all, unprefixed)) {
+        return true;
+      }
+      ref3 = this.all.cleaner().values('remove', unprefixed);
+      for (j = 0, len = ref3.length; j < len; j++) {
+        checker = ref3[j];
+        if (checker.check(value)) {
+          return true;
+        }
+      }
+      return false;
+    };
+
+    Supports.prototype.remove = function(nodes, all) {
+      var i;
+      i = 0;
+      while (i < nodes.length) {
+        if (!this.isNot(nodes[i - 1]) && this.isProp(nodes[i]) && this.isOr(nodes[i + 1])) {
+          if (this.toRemove(nodes[i][0], all)) {
+            nodes.splice(i, 2);
+          } else {
+            i += 2;
+          }
+        } else {
+          if (typeof nodes[i] === 'object') {
+            nodes[i] = this.remove(nodes[i], all);
+          }
+          i += 1;
+        }
+      }
+      return nodes;
+    };
+
+    Supports.prototype.cleanBrackets = function(nodes) {
+      return nodes.map((function(_this) {
+        return function(i) {
+          if (typeof i === 'object') {
+            if (i.length === 1 && typeof i[0] === 'object') {
+              return _this.cleanBrackets(i[0]);
+            } else {
+              return _this.cleanBrackets(i);
+            }
+          } else {
+            return i;
+          }
+        };
+      })(this));
+    };
+
+    Supports.prototype.convert = function(progress) {
+      var i, j, len, result;
+      result = [''];
+      for (j = 0, len = progress.length; j < len; j++) {
+        i = progress[j];
+        result.push([i.prop + ": " + i.value]);
+        result.push(' or ');
+      }
+      result[result.length - 1] = '';
+      return result;
+    };
+
+    Supports.prototype.normalize = function(nodes) {
+      if (typeof nodes === 'object') {
+        nodes = nodes.filter(function(i) {
+          return i !== '';
+        });
+        if (typeof nodes[0] === 'string' && nodes[0].indexOf(':') !== -1) {
+          return [brackets.stringify(nodes)];
+        } else {
+          return nodes.map((function(_this) {
+            return function(i) {
+              return _this.normalize(i);
+            };
+          })(this));
+        }
+      } else {
+        return nodes;
+      }
+    };
+
+    Supports.prototype.add = function(nodes, all) {
+      return nodes.map((function(_this) {
+        return function(i) {
+          var prefixed;
+          if (_this.isProp(i)) {
+            prefixed = _this.prefixed(i[0]);
+            if (prefixed.length > 1) {
+              return _this.convert(prefixed);
+            } else {
+              return i;
+            }
+          } else if (typeof i === 'object') {
+            return _this.add(i, all);
+          } else {
+            return i;
+          }
+        };
+      })(this));
+    };
+
+    Supports.prototype.process = function(rule) {
+      var ast;
+      ast = brackets.parse(rule.params);
+      ast = this.normalize(ast);
+      ast = this.remove(ast, rule.params);
+      ast = this.add(ast, rule.params);
+      ast = this.cleanBrackets(ast);
+      return rule.params = brackets.stringify(ast);
+    };
+
+    Supports.prototype.disabled = function(node) {
+      var other;
+      if (this.all.options.grid === false) {
+        if (node.prop === 'display' && node.value.indexOf('grid') !== -1) {
+          return true;
+        }
+        if (node.prop.indexOf('grid') !== -1 || node.prop === 'justify-items') {
+          return true;
+        }
+      }
+      if (this.all.options.flexbox === false) {
+        if (node.prop === 'display' && node.value.indexOf('flex') !== -1) {
+          return true;
+        }
+        other = ['order', 'justify-content', 'align-items', 'align-content'];
+        if (node.prop.indexOf('flex') !== -1 || other.indexOf(node.prop) !== -1) {
+          return true;
+        }
+      }
+      return false;
+    };
+
+    return Supports;
+
+  })();
+
+  module.exports = Supports;
+
+}).call(this);