Fix dynamic styles placeholder replacement

expression -> placeholder

refs: https://github.com/zeit/styled-jsx/blob/master/src/_utils.js#L250-L261

Author: RusinovAnton

index.js

@@ -4,12 +4,12 @@ const loopWhile = require("deasync").loopWhile;
 module.exports = (css, settings) => {
     const cssWithPlaceholders = css
         .replace(
-            /\:\s*%%styled-jsx-expression-(\d+)%%/g,
-            (_, id) => `: styled-jsx-expression-${id}()`
+            /\:\s*%%styled-jsx-placeholder-(\d+)%%/g,
+            (_, id) => `: styled-jsx-placeholder-${id}()`
         )
         .replace(
-            /%%styled-jsx-expression-(\d+)%%/g,
-            (_, id) => `/*%%styled-jsx-expression-${id}%%*/`
+            /%%styled-jsx-placeholder-(\d+)%%/g,
+            (_, id) => `/*%%styled-jsx-placeholder-${id}%%*/`
         );
 
     let wait = true;
@@ -31,11 +31,11 @@ module.exports = (css, settings) => {
 
     return preprocessed
         .replace(
-            /\:\s*styled-jsx-expression-(\d+)\(\)/g,
-            (_, id) => `: %%styled-jsx-expression-${id}%%`
+            /\:\s*styled-jsx-placeholder-(\d+)\(\)/g,
+            (_, id) => `: %%styled-jsx-placeholder-${id}%%`
         )
         .replace(
-            /\/\*%%styled-jsx-expression-(\d+)%%\*\//g,
-            (_, id) => `%%styled-jsx-expression-${id}%%`
+            /\/\*%%styled-jsx-placeholder-(\d+)%%\*\//g,
+            (_, id) => `%%styled-jsx-placeholder-${id}%%`
         );
 };