Resolve Windows path installation problems. (#24)

* Try using `path.sep` to fix Windows path issues.

* Another Windows path issue.

* Finish spike on Windows issues.

Author: chriskrycho

blueprints/ember-cli-typescript/index.js

@@ -7,16 +7,20 @@ module.exports = {
     return [
       path.join(this.path, 'files', 'tsconfig.json'),
       path.join(this.path, 'files', 'app', 'config', 'environment.d.ts')
-      ];
+    ];
   },
 
-   mapFile: function() {
-    var result = this._super.mapFile.apply(this, arguments);
-    if (result.indexOf('/tsconfig.json')>-1) {
+  mapFile: function() {
+    const result = this._super.mapFile.apply(this, arguments);
+
+    const tsconfigPattern = `${path.sep}tsconfig.json`;
+    const appPattern = `${path.sep}app${path.sep}`;
+
+    if (result.indexOf(tsconfigPattern) > -1) {
       return 'tsconfig.json';
-    } else if (result.indexOf('/app/')>-1) {
-      var pos = result.indexOf('/app/');
-      return result.substring(pos+1);
+    } else if (result.indexOf(appPattern) > -1) {
+      var pos = result.indexOf(appPattern);
+      return result.substring(pos + 1);
     }
   },
 

lib/typescript-preprocessor.js

@@ -2,6 +2,7 @@ var tsc = require('broccoli-typescript-compiler').typescript;
 var fs = require('fs');
 var debug = require('debug')('ember-cli-typescript');
 var ts = require('typescript');
+const path = require('path');
 var stew = require('broccoli-stew');
 var find = stew.find;
 var MergeTrees = require("broccoli-merge-trees");
@@ -45,7 +46,7 @@ function typePaths(config) {
 }
 
 TypeScriptPreprocessor.prototype.toTree = function(inputNode, inputPath, outputPath) {
-  var config = readConfig("./tsconfig.json");
+  var config = readConfig(path.join(".", "tsconfig.json"));
   // "include" setting is meant for the IDE integration,
   // broccoli manages its own input files.
   if (config.include) {