API change (plugin now return a function)

See changelog for more informations

poke @jonathanong

Author: MoOx

CHANGELOG.md

@@ -1,3 +1,7 @@
+# 2.0.0 - 2014-08-06
+
+* Plugin now return a function to have a consistent api. ([ref1](https://github.com/ianstormtaylor/rework-color-function/issues/6), [ref2](https://twitter.com/jongleberry/status/496552790416576513))
+
 # 1.0.0 - 2014-08-04
 
 First release based on [rework-calc](https://github.com/reworkcss/rework-calc) v1.1.0 (code mainly exported to [`reduce-css-calc`](https://github.com/MoOx/reduce-css-calc))

README.md

@@ -17,7 +17,10 @@ npm install postcss-calc
 var postcss = require("postcss")
 var calc = require("postcss-calc")
 
-var css = postcss(calc).process(cssString).css;
+var css = postcss()
+  .use(calc())
+  .process(cssString)
+  .css
 ```
 
 ## Supported feature
@@ -41,7 +44,7 @@ var css = fs.readFileSync("style.css", "utf8")
 
 var output = postcss()
   .use(customProperties())
-  .use(calc)
+  .use(calc())
   .process(css)
   .css
 ```

index.js

@@ -1,7 +1,7 @@
 /**
  * Module dependencies.
  */
-var reduceCssCalc = require("reduce-css-calc")
+var reduceCSSCalc = require("reduce-css-calc")
 
 /**
  * Expose `plugin`.
@@ -10,47 +10,31 @@ var reduceCssCalc = require("reduce-css-calc")
 module.exports = plugin
 
 /**
- * Plugin to convert CSS color functions.
+ * Plugin to convert all function calls.
  *
  * @param {Object} stylesheet
  */
 
-function plugin(style) {
-  style.eachRule(rule)
-}
-
-/**
- * Convert an entire `rule`.
- *
- * @param {Object} rule
- */
-
-function rule(obj) {
-  obj.each(declaration)
-}
-
-/**
- * Convert a declaration.
- *
- * @param {Object} dec
- */
-
-function declaration(dec) {
-  if (!dec.value) {
-    return
-  }
-
-  try {
-    dec.value = convert(dec.value)
-  }
-  catch (err) {
-    err.position = dec.position
-    throw err
+function plugin() {
+  return function(style) {
+    style.eachDecl(function declaration(dec) {
+      if (!dec.value) {
+        return
+      }
+
+      try {
+        dec.value = convert(dec.value)
+      }
+      catch (err) {
+        err.position = dec.position
+        throw err
+      }
+    })
   }
 }
 
 /**
- * Reduce css calc()
+ * Reduce CSS calc()
  *
  * @param {String} string
  * @return {String}
@@ -61,5 +45,5 @@ function convert(string) {
     return string
   }
 
-  return reduceCssCalc(string)
+  return reduceCSSCalc(string)
 }

test/index.js

@@ -13,7 +13,7 @@ function fixture(name) {
 test("resolve what is possible in complex calc", function(t) {
   var actual = postcss()
     .use(customProperties())
-    .use(calc)
+    .use(calc())
     .process(fixture("calc"))
     .css
     .trim()