1 files changed, 17 insertions, 1 deletions

diff --git a/src/config.js b/src/config.js
index 127dcd2dc..189959a4d 100644
--- a/src/config.js
+++ b/src/config.js
@@ -196,7 +196,23 @@ if (process.env.FERDI_APPDATA_DIR != null) {
   app.setPath('userData', path.join(app.getPath('appData'), app.name));
 }
 
-export const isDevMode = !app.isPackaged;
+const ELECTRON_IS_DEV_VAR = 'ELECTRON_IS_DEV';
+const NODE_ENV_VAR = 'NODE_ENV';
+
+// TODO Move this to environment.js and remove the re-export from there.
+export const isDevMode = (() => {
+  const isEnvVarSet = name => name in process.env;
+  if (isEnvVarSet(ELECTRON_IS_DEV_VAR)) {
+    // Copied from https://github.com/sindresorhus/electron-is-dev/blob/f05330b856782dac7987b10859bfd95ea6a187a6/index.js
+    // but electron-is-dev breaks in a renderer process, so we use the app import from above instead.
+    const electronIsDev = process.env[ELECTRON_IS_DEV_VAR];
+    return electronIsDev === 'true' || Number.parseInt(electronIsDev, 10) === 1;
+  }
+  if (isEnvVarSet(NODE_ENV_VAR)) {
+    return process.env[NODE_ENV_VAR] === 'development';
+  }
+  return !app.isPackaged;
+})();
 if (isDevMode) {
   app.setPath('userData', path.join(app.getPath('appData'), `${app.name}Dev`));
 }