add some packages

node_modules/clean-css/lib/writer/simple.js

@@ -0,0 +1,52 @@
+var all = require('./helpers').all;
+
+var lineBreak = require('os').EOL;
+
+function store(serializeContext, token) {
+  var value = typeof token == 'string' ?
+    token :
+    token[1];
+  var wrap = serializeContext.wrap;
+
+  wrap(serializeContext, value);
+  track(serializeContext, value);
+  serializeContext.output.push(value);
+}
+
+function wrap(serializeContext, value) {
+  if (serializeContext.column + value.length > serializeContext.format.wrapAt) {
+    track(serializeContext, lineBreak);
+    serializeContext.output.push(lineBreak);
+  }
+}
+
+function track(serializeContext, value) {
+  var parts = value.split('\n');
+
+  serializeContext.line += parts.length - 1;
+  serializeContext.column = parts.length > 1 ? 0 : (serializeContext.column + parts.pop().length);
+}
+
+function serializeStyles(tokens, context) {
+  var serializeContext = {
+    column: 0,
+    format: context.options.format,
+    indentBy: 0,
+    indentWith: '',
+    line: 1,
+    output: [],
+    spaceAfterClosingBrace: context.options.compatibility.properties.spaceAfterClosingBrace,
+    store: store,
+    wrap: context.options.format.wrapAt ?
+      wrap :
+      function () { /* noop */  }
+  };
+
+  all(serializeContext, tokens);
+
+  return {
+    styles: serializeContext.output.join('')
+  };
+}
+
+module.exports = serializeStyles;