Change API to remove postCSS dependency

Author: jacobp100

README.md

@@ -77,10 +77,11 @@ The API is mostly for implementors. However, the main API may be useful for non-
 import transform from 'css-to-react-native';
 // or const transform = require('css-to-react-native').default;
 
-transform(`
-  font: bold 14/16 "Helvetica";
-  margin: 5 7 2;
-`); // => { fontFamily: 'Helvetica', ... }
+transform([
+  ['font', 'bold 14/16 "Helvetica"'],
+  ['margin', '5 7 2'],
+  ['border-left-width', '5'],
+]); // => { fontFamily: 'Helvetica', ... }
 ```
 
 For implementors, there is also,

package.json

@@ -32,7 +32,6 @@
   "dependencies": {
     "css-color-list": "0.0.1",
     "fbjs": "^0.8.5",
-    "nearley": "^2.7.7",
-    "postcss": "^5.2.5"
+    "nearley": "^2.7.7"
   }
 }

src/index.js

@@ -1,5 +1,4 @@
 /* eslint-disable no-param-reassign */
-const postcss = require('postcss');
 const nearley = require('nearley');
 const camelizeStyleName = require('fbjs/lib/camelizeStyleName');
 const grammar = require('./grammar');
@@ -42,16 +41,9 @@ export const getStylesForProperty = (propName, inputValue) => {
 
 export const getPropertyName = camelizeStyleName;
 
-const getStylesForDecl = decl =>
-  getStylesForProperty(getPropertyName(decl.prop), decl.value);
-
-export default (css) => {
-  const root = postcss.parse(css);
-
-  const decls = [];
-  root.walkDecls((decl) => { decls.push(decl); });
-
-  const style = decls.reduce((accum, decl) => Object.assign(accum, getStylesForDecl(decl)), {});
-
-  return style;
-};
+export default rules => rules.reduce((accum, rule) => (
+  Object.assign(accum, getStylesForProperty(
+    getPropertyName(rule[0]),
+    rule[1],
+  ))
+), {});