Fix paths in Windows

Author: cpylua

lib/insert-demos.js

@@ -1,4 +1,5 @@
 var fs = require('fs');
+var path = require('path');
 var removePosition = require('unist-util-remove-position');
 var u = require('unist-builder');
 var _ = require('lodash');
@@ -12,6 +13,8 @@ var demoHeaders = {
   'en-US': 'Demos'
 }
 
+var I18N_KEY_REGEXP = /\{i18n\.([^\}]*)\}/;
+
 // var beautyConsole = require('./lib').beautyConsole;
 
 /**
@@ -55,8 +58,9 @@ function getDemoID(filename) {
 
 function extractDemos(demosPath, i18n, ctx) {
   var styles = [];
-  var demos = fs.readdirSync(demosPath + '/demos').map(filename => {
-    var filePath = demosPath + '/demos/' + filename;
+  var demoDir = path.join(demosPath, 'demos');
+  var demos = fs.readdirSync(demoDir).map(filename => {
+    var filePath = path.join(demosDir, filename);
     ctx.addDependency(filePath)
     var demoAST = markdownParser.parse(fs.readFileSync(filePath, { encoding: 'utf-8' })),
       yamlPart = (demoAST && demoAST.children && demoAST.children[0]) || {},
@@ -67,13 +71,13 @@ function extractDemos(demosPath, i18n, ctx) {
     if (yamlPart.type === 'yaml') {
       yaml = parseYAML(yamlPart.value);
     } else {
-      ctx.emitWarning(`\nYaml header in demo.md is required, ${demosPath + '/demos/' + filename} wasn't appended.\n`);
+      ctx.emitWarning('\nYaml header in demo.md is required, ' + filePath + ' wasn\'t appended.\n');
       return null;
     }
 
     // validate main content
     if (mainContent.type !== 'code') {
-      ctx.emitWarning(`\nThe first 2 sections of demo.md must be yaml header and code block, ${demosPath + '/demos/' + filename} wasn't appended.\n`);
+      ctx.emitWarning('\nThe first 2 sections of demo.md must be yaml header and code block, ' + filePath + ' wasn\'t appended.\n');
       return null;
     }
 
@@ -96,9 +100,11 @@ function extractDemos(demosPath, i18n, ctx) {
     });
 
     // check if any {i18n.xxx} exists after replace
-    if (/\{i18n\.[^\}]*\}/.test(mainContent.value)) {
+    var i18nMatchResult = I18N_KEY_REGEXP.exec(mainContent.value);
+    if (i18nMatchResult) {
+      var i18nMissingKey = i18nMatchResult[1];
       ctx.emitError(new Error(
-        `\nUnrecognized i18n variable {i18n.${/\{i18n\.([^\}]*)\}/.exec(mainContent.value)[1]}} in ${demosPath + '/demos/' + filename}`
+        '\nUnrecognized i18n variable {i18n.' + i18nMissingKey + '} in ' + filePath
       ));
       return null;
     }