IE download fix

.gitignore

@@ -1 +1,2 @@
 shpwrite.js
+node_modules

README.md

@@ -16,26 +16,31 @@ Or in a browser
 
     https://unpkg.com/shp-write@latest/shpwrite.js
 
+## Testing
+
+To test the download functionality run `npm run make-test` and open index.html in browser.
+This should start an immediate download of test features defined in `indexTest.js`.
+
 ## Caveats
 
 * Requires a capable fancy modern browser with [Typed Arrays](http://caniuse.com/#feat=typedarrays)
   support
 * Geometries: Point, LineString, Polygon, MultiLineString, MultiPolygon
 * Tabular-style properties export with Shapefile's field name length limit
-* Uses jsZip for ZIP files, but [compression is buggy](https://github.com/Stuk/jszip/issues/53) so it uses STORE instead of DEFLATE.
 
 ## Example
 
 ```js
 var shpwrite = require('shp-write');
 
-// (optional) set names for feature types and zipped folder
+// (optional) set names for zip file, zipped folder and feature types
 var options = {
+    file: 'myshapes'
     folder: 'myshapes',
     types: {
         point: 'mypoints',
         polygon: 'mypolygons',
-        line: 'mylines'
+        polyline: 'mylines'
     }
 }
 // a GeoJSON bridge for features

index.html

@@ -1 +1 @@
-<script src='bundle.js'></script>
+<script src='shpwrite.js'></script>

indexTest.js

@@ -0,0 +1,85 @@
+require('./src/download')({
+    "type": "FeatureCollection",
+    "features": [{
+            "type": "Feature",
+            "properties": {},
+            "geometry": {
+                "type": "Polygon",
+                "coordinates": [
+                    [
+                        [
+                            24.936046600341797,
+                            60.175245406790246
+                        ],
+                        [
+                            24.920597076416016,
+                            60.15577400466598
+                        ],
+                        [
+                            24.953556060791016,
+                            60.1570553725571
+                        ],
+                        [
+                            24.936046600341797,
+                            60.175245406790246
+                        ]
+                    ],
+                    [
+                        [
+                            24.93523120880127,
+                            60.169247224327165
+                        ],
+                        [
+                            24.945573806762695,
+                            60.15874243076889
+                        ],
+                        [
+                            24.928064346313477,
+                            60.15825127085746
+                        ],
+                        [
+                            24.93523120880127,
+                            60.169247224327165
+                        ]
+                    ]
+                ]
+            }
+        },
+        {
+            "type": "Feature",
+            "properties": {},
+            "geometry": {
+                "type": "LineString",
+                "coordinates": [
+                    [
+                        24.920940399169922,
+                        60.17977000114811
+                    ],
+                    [
+                        24.953556060791016,
+                        60.17486121440947
+                    ]
+                ]
+            }
+        },
+        {
+            "type": "Feature",
+            "properties": {},
+            "geometry": {
+                "type": "Point",
+                "coordinates": [
+                    24.925403594970703,
+                    60.171830205844614
+                ]
+            }
+        }
+    ]
+}, {
+    file: 'shapefiles',
+    folder: 'shapefiles',
+    types: {
+        point: 'points',
+        polygon: 'polygons',
+        polyline: 'lines'
+    }
+});

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "test": "mocha -R spec",
     "prepublish": "npm run make",
-    "make": "browserify -s shpwrite ./ > shpwrite.js"
+    "make": "browserify -s shpwrite ./ > shpwrite.js",
+    "make-test": "browserify indexTest.js > shpwrite.js"
   },
   "repository": {
     "type": "git",
@@ -35,7 +36,8 @@
   },
   "dependencies": {
     "dbf": "0.1.4",
-    "jszip": "2.5.0"
+    "file-saver": "1.3.3",
+    "jszip": "3.1.3"
   },
   "devDependencies": {
     "browserify": "^13.0.0",

src/download.js

@@ -1,6 +1,6 @@
 var zip = require('./zip');
+var saveAs = require("file-saver").saveAs;
 
 module.exports = function(gj, options) {
-    var content = zip(gj, options);
-    location.href = 'data:application/zip;base64,' + content;
+    zip(gj, options).then(function(blob) { saveAs(blob, options.file + '.zip'); });
 };

src/zip.js

@@ -28,11 +28,8 @@ module.exports = function(gj, options) {
         }
     });
 
-    var generateOptions = { compression:'STORE' };
-
-    if (!process.browser) {
-      generateOptions.type = 'nodebuffer';
-    }
-
-    return zip.generate(generateOptions);
+    return zip.generateAsync({
+        type: process.browser === undefined ? 'nodebuffer' : 'blob',
+        compression: 'DEFLATE'
+    });
 };