diff --git a/.prettierrc.json b/.prettierrc.json
index 0fef0b8..e21c116 100644
--- a/.prettierrc.json
+++ b/.prettierrc.json
@@ -2,5 +2,6 @@
   "singleQuote": true,
   "bracketSpacing": false,
   "arrowParens": "always",
-  "trailingComma": "all"
+  "trailingComma": "all",
+  "endOfLine": "crlf"
 }
diff --git a/package-lock.json b/package-lock.json
index 872fd59..1c4f85b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,7 +5,6 @@
   "requires": true,
   "packages": {
     "": {
-      "name": "topola-viewer",
       "version": "1.0.0",
       "dependencies": {
         "@artsy/fresnel": "^1.3.1",
@@ -63,6 +62,7 @@
         "gh-pages": "^3.1.0",
         "prettier": "^2.2.1",
         "react-scripts": "^4.0.3",
+        "run-script-os": "^1.1.6",
         "start-server-and-test": "^1.12.1",
         "tslint-config-prettier": "^1.18.0",
         "typescript": "^4.2.3"
@@ -6501,6 +6501,7 @@
       "version": "3.10.0",
       "resolved": "https://registry.npmjs.org/core-js/-/core-js-3.10.0.tgz",
       "integrity": "sha512-MQx/7TLgmmDVamSyfE+O+5BHvG1aUGj/gHhLn1wVtm2B5u1eVIPvh7vkfjwWKNCjrTJB8+He99IntSQ1qP+vYQ==",
+      "devOptional": true,
       "hasInstallScript": true,
       "funding": {
         "type": "opencollective",
@@ -19909,6 +19910,16 @@
         "aproba": "^1.1.1"
       }
     },
+    "node_modules/run-script-os": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/run-script-os/-/run-script-os-1.1.6.tgz",
+      "integrity": "sha512-ql6P2LzhBTTDfzKts+Qo4H94VUKpxKDFz6QxxwaUZN0mwvi7L3lpOI7BqPCq7lgDh3XLl0dpeXwfcVIitlrYrw==",
+      "dev": true,
+      "bin": {
+        "run-os": "index.js",
+        "run-script-os": "index.js"
+      }
+    },
     "node_modules/rxjs": {
       "version": "6.6.7",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.6.7.tgz",
@@ -30689,7 +30700,8 @@
     "core-js": {
       "version": "3.10.0",
       "resolved": "https://registry.npmjs.org/core-js/-/core-js-3.10.0.tgz",
-      "integrity": "sha512-MQx/7TLgmmDVamSyfE+O+5BHvG1aUGj/gHhLn1wVtm2B5u1eVIPvh7vkfjwWKNCjrTJB8+He99IntSQ1qP+vYQ=="
+      "integrity": "sha512-MQx/7TLgmmDVamSyfE+O+5BHvG1aUGj/gHhLn1wVtm2B5u1eVIPvh7vkfjwWKNCjrTJB8+He99IntSQ1qP+vYQ==",
+      "devOptional": true
     },
     "core-js-compat": {
       "version": "3.10.0",
@@ -41382,6 +41394,12 @@
         "aproba": "^1.1.1"
       }
     },
+    "run-script-os": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/run-script-os/-/run-script-os-1.1.6.tgz",
+      "integrity": "sha512-ql6P2LzhBTTDfzKts+Qo4H94VUKpxKDFz6QxxwaUZN0mwvi7L3lpOI7BqPCq7lgDh3XLl0dpeXwfcVIitlrYrw==",
+      "dev": true
+    },
     "rxjs": {
       "version": "6.6.7",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.6.7.tgz",
diff --git a/package.json b/package.json
index d756166..cd78935 100644
--- a/package.json
+++ b/package.json
@@ -58,13 +58,18 @@
     "gh-pages": "^3.1.0",
     "prettier": "^2.2.1",
     "react-scripts": "^4.0.3",
+    "run-script-os": "^1.1.6",
     "start-server-and-test": "^1.12.1",
     "tslint-config-prettier": "^1.18.0",
     "typescript": "^4.2.3"
   },
   "scripts": {
-    "start": "REACT_APP_CHANGELOG=`cat CHANGELOG.md` REACT_APP_GIT_SHA=`git rev-parse --short HEAD` REACT_APP_GIT_TIME=`git log -1 --format=%ci` react-scripts start",
-    "build": "REACT_APP_CHANGELOG=`cat CHANGELOG.md` REACT_APP_GIT_SHA=`git rev-parse --short HEAD` REACT_APP_GIT_TIME=`git log -1 --format=%ci` react-scripts build",
+    "start": "run-script-os",
+    "start:default": "REACT_APP_CHANGELOG=`cat CHANGELOG.md` REACT_APP_GIT_SHA=`git rev-parse --short HEAD` REACT_APP_GIT_TIME=`git log -1 --format=%ci` react-scripts start",
+    "start:windows": "react-scripts start",
+    "build": "run-script-os",
+    "build:default": "REACT_APP_CHANGELOG=`cat CHANGELOG.md` REACT_APP_GIT_SHA=`git rev-parse --short HEAD` REACT_APP_GIT_TIME=`git log -1 --format=%ci` react-scripts build",
+    "build:windows": "react-scripts build",
     "test": "react-scripts test --env=jsdom",
     "prettier": "prettier --write src/**/*.{ts,tsx,json} && prettier --write src/*.{ts,tsx,json}",
     "predeploy": "npm run build",
diff --git a/src/changelog.tsx b/src/changelog.tsx
index cbb594d..37f530d 100644
--- a/src/changelog.tsx
+++ b/src/changelog.tsx
@@ -19,16 +19,16 @@ export async function getChangelog(maxVersions: number, seenVersion?: string) {
     ? Date.parse(seenVersion.slice(0, 10))
     : 0;
 
-  const changes = process.env
-    .REACT_APP_CHANGELOG!.split('##')
-    .slice(1, maxVersions + 1)
-    .map((notes) => {
-      const date = Date.parse(notes.split('\n')[0].trim());
-      return {date, notes: '####' + notes};
-    })
-    .filter((release) => release.date > seenVersionDate)
-    .map((release) => release.notes)
-    .join('\n');
+  const changes =
+    process.env.REACT_APP_CHANGELOG?.split('##')
+      .slice(1, maxVersions + 1)
+      .map((notes) => {
+        const date = Date.parse(notes.split('\n')[0].trim());
+        return {date, notes: '####' + notes};
+      })
+      .filter((release) => release.date > seenVersionDate)
+      .map((release) => release.notes)
+      .join('\n') || '';
 
   const parsedChanges = await unified()
     .use(remarkParse)
diff --git a/src/datasource/wikitree.ts b/src/datasource/wikitree.ts
index 4cb5d09..f1bf116 100644
--- a/src/datasource/wikitree.ts
+++ b/src/datasource/wikitree.ts
@@ -680,14 +680,15 @@ function famToGedcom(fam: JsonFam): GedcomEntry {
       tree: [],
     });
   }
-  (fam.children || []).forEach(child =>
+  (fam.children || []).forEach((child) =>
     record.tree.push({
       level: 1,
       pointer: child,
       tag: 'CHILD',
       data: '',
       tree: [],
-    }));
+    }),
+  );
   if (fam.marriage) {
     record.tree.push({
       level: 1,
diff --git a/src/intro.tsx b/src/intro.tsx
index 84abed4..822af38 100644
--- a/src/intro.tsx
+++ b/src/intro.tsx
@@ -19,7 +19,7 @@ function GedcomLink(props: {url: string; text: string}) {
 }
 
 function formatBuildDate(dateString: string) {
-  return dateString.slice(0, 16);
+  return dateString?.slice(0, 16) || '';
 }
 
 function Contents() {