fix 0x0 icon size in debian package

.afterPack.js

@@ -0,0 +1,19 @@
+// The hook is a temporary fix to set the right icon size for the deb archive.
+// The hook only applies to the `deb` target.
+// The hook will set the icon size to 512 for all icons with a size of 0.
+// The hook can be removed once:
+// 1. The proper fix (https://github.com/develar/app-builder/pull/71) is merged.
+// 2. New versions of app-builder and app-builder-bin are released.
+// 3. A version of electron-builder with the fixed app-builder-bin is released.
+// 4. The electron-builder dev dependency is updated.
+exports.default = async function(context) {
+    context.targets.forEach(target => {
+        if (target.name !== "deb") { return }
+
+        target.helper.iconPromise.value = target.helper.iconPromise.value.then(
+            icons => icons.map(
+                icon => ({...icon, size: icon.size === 0 ? 512 : icon.size})
+            )
+        )
+    })
+}

package.json

@@ -148,7 +148,8 @@
             "provider": "github",
             "owner": "jeffvli",
             "repo": "feishin"
-        }
+        },
+        "afterPack": ".afterPack.js"
     },
     "repository": {
         "type": "git",