diff --git a/lib/babel.config.cjs b/babel.config.cjs
rename from lib/babel.config.cjs
rename to babel.config.cjs
--- a/lib/babel.config.cjs
+++ b/babel.config.cjs
@@ -7,7 +7,6 @@
     '@babel/plugin-proposal-nullish-coalescing-operator',
     ['@babel/plugin-transform-runtime', { useESModules: true }],
   ],
-
   env: {
     test: {
       presets: [
@@ -22,4 +21,5 @@
       ],
     },
   },
+  babelrcRoots: ['.', 'keyserver', 'web', 'native', 'desktop', 'landing'],
 };
diff --git a/desktop/babel.config.cjs b/desktop/.babelrc.cjs
rename from desktop/babel.config.cjs
rename to desktop/.babelrc.cjs
diff --git a/keyserver/babel.config.cjs b/keyserver/.babelrc.cjs
copy from keyserver/babel.config.cjs
copy to keyserver/.babelrc.cjs
diff --git a/keyserver/Dockerfile b/keyserver/Dockerfile
--- a/keyserver/Dockerfile
+++ b/keyserver/Dockerfile
@@ -163,7 +163,7 @@
 # These are needed for babel-build-comm-config
 COPY --chown=comm keyserver/src keyserver/src
 COPY --chown=comm keyserver/bash/source-nvm.sh keyserver/bash/source-nvm.sh
-COPY --chown=comm keyserver/babel.config.cjs keyserver/babel.config.cjs
+COPY --chown=comm keyserver/.babelrc.cjs keyserver/.babelrc.cjs
 
 COPY --chown=comm lib lib/
 
diff --git a/keyserver/babel.config.cjs b/keyserver/babel.config.cjs
--- a/keyserver/babel.config.cjs
+++ b/keyserver/babel.config.cjs
@@ -1,35 +1,2 @@
-module.exports = {
-  presets: ['@babel/preset-react', '@babel/preset-flow'],
-  plugins: [
-    '@babel/plugin-proposal-class-properties',
-    '@babel/plugin-proposal-object-rest-spread',
-    '@babel/plugin-syntax-dynamic-import',
-    '@babel/plugin-proposal-optional-chaining',
-    '@babel/plugin-proposal-nullish-coalescing-operator',
-    ['@babel/plugin-transform-runtime', { useESModules: true }],
-  ],
-  env: {
-    test: {
-      presets: [
-        [
-          '@babel/preset-env',
-          {
-            targets: {
-              node: 'current',
-            },
-          },
-        ],
-      ],
-      plugins: [
-        // Replace the import.meta object in the Jest testing environment.
-        // This allows Jest to understand import.meta.url in rust-node-addon.
-        [
-          'babel-plugin-transform-import-meta',
-          {
-            replaceWith: '({ url: __filename })',
-          },
-        ],
-      ],
-    },
-  },
-};
+const config = require('./.babelrc.cjs');
+module.exports = config;
diff --git a/keyserver/package.json b/keyserver/package.json
--- a/keyserver/package.json
+++ b/keyserver/package.json
@@ -7,8 +7,8 @@
   "main": "dist/keyserver",
   "scripts": {
     "clean": "rm -rf dist/ && rm -rf node_modules/ && mkdir dist",
-    "babel-build-comm-config": ". bash/source-nvm.sh && yarn --silent babel src/lib/utils/comm-config.js --out-dir dist/lib/utils/ --config-file ./babel.config.cjs",
-    "babel-build": ". bash/source-nvm.sh && yarn --silent babel src/ --out-dir dist/ --config-file ./babel.config.cjs --verbose --ignore 'src/landing/flow-typed','src/landing/node_modules','src/landing/package.json','src/lib/flow-typed','src/lib/node_modules','src/lib/package.json','src/web/flow-typed','src/web/node_modules','src/web/package.json','src/web/dist','src/web/webpack.config.js','src/web/account-bar.react.js','src/web/app.react.js','src/web/calendar','src/web/chat','src/web/flow','src/web/loading-indicator.react.js','src/web/modals','src/web/root.js','src/web/router-history.js','src/web/script.js','src/web/selectors/chat-selectors.js','src/web/selectors/entry-selectors.js','src/web/splash','src/web/vector-utils.js','src/web/vectors.react.js'",
+    "babel-build-comm-config": ". bash/source-nvm.sh && yarn --silent babel src/lib/utils/comm-config.js --out-dir dist/lib/utils/ --config-file ./.babelrc.cjs",
+    "babel-build": ". bash/source-nvm.sh && yarn --silent babel src/ --out-dir dist/ --config-file ./.babelrc.cjs --verbose --ignore 'src/landing/flow-typed','src/landing/node_modules','src/landing/package.json','src/lib/flow-typed','src/lib/node_modules','src/lib/package.json','src/web/flow-typed','src/web/node_modules','src/web/package.json','src/web/dist','src/web/webpack.config.js','src/web/account-bar.react.js','src/web/app.react.js','src/web/calendar','src/web/chat','src/web/flow','src/web/loading-indicator.react.js','src/web/modals','src/web/root.js','src/web/router-history.js','src/web/script.js','src/web/selectors/chat-selectors.js','src/web/selectors/entry-selectors.js','src/web/splash','src/web/vector-utils.js','src/web/vectors.react.js'",
     "rsync": "rsync -rLpmuv --exclude '*/package.json' --exclude '*/node_modules/*' --include '*.json' --include '*.cjs' --include '*.node' --exclude '*.*' src/ dist/",
     "prod-build": "yarn babel-build && yarn rsync",
     "prod": "KEYSERVER=true node --trace-warnings --loader=./loader.mjs dist/keyserver",
@@ -102,7 +102,7 @@
       "<rootDir>/src"
     ],
     "transform": {
-      "\\.js$": "babel-jest"
+      "\\.js$": ["babel-jest", { "rootMode": "upward" }]
     },
     "transformIgnorePatterns": [
       "/node_modules/(?!@babel/runtime)"
diff --git a/landing/babel.config.cjs b/landing/.babelrc.cjs
rename from landing/babel.config.cjs
rename to landing/.babelrc.cjs
diff --git a/landing/webpack.config.cjs b/landing/webpack.config.cjs
--- a/landing/webpack.config.cjs
+++ b/landing/webpack.config.cjs
@@ -7,7 +7,7 @@
   createNodeServerRenderingConfig,
 } = require('lib/webpack/shared.cjs');
 
-const babelConfig = require('./babel.config.cjs');
+const babelConfig = require('./.babelrc.cjs');
 
 const baseBrowserConfig = {
   entry: {
diff --git a/lib/package.json b/lib/package.json
--- a/lib/package.json
+++ b/lib/package.json
@@ -67,7 +67,7 @@
   },
   "jest": {
     "transform": {
-      "\\.js$": "babel-jest"
+      "\\.js$": ["babel-jest", { "rootMode": "upward" }]
     },
     "transformIgnorePatterns": [
       "/node_modules/(?!@babel/runtime)"
diff --git a/native/babel.config.cjs b/native/.babelrc.cjs
copy from native/babel.config.cjs
copy to native/.babelrc.cjs
diff --git a/native/babel.config.cjs b/native/babel.config.cjs
--- a/native/babel.config.cjs
+++ b/native/babel.config.cjs
@@ -1,15 +1,2 @@
-module.exports = {
-  presets: ['module:metro-react-native-babel-preset'],
-  plugins: [
-    'transform-remove-strict-mode',
-    '@babel/plugin-proposal-optional-chaining',
-    '@babel/plugin-proposal-nullish-coalescing-operator',
-    // react-native-reanimated must be last
-    'react-native-reanimated/plugin',
-  ],
-  env: {
-    production: {
-      plugins: ['transform-remove-console'],
-    },
-  },
-};
+const config = require('./.babelrc.cjs');
+module.exports = config;
diff --git a/web/babel.config.cjs b/web/.babelrc.cjs
copy from web/babel.config.cjs
copy to web/.babelrc.cjs
diff --git a/web/babel.config.cjs b/web/babel.config.cjs
--- a/web/babel.config.cjs
+++ b/web/babel.config.cjs
@@ -1,24 +1,2 @@
-module.exports = {
-  presets: ['@babel/preset-react', '@babel/preset-flow'],
-  plugins: [
-    '@babel/plugin-proposal-class-properties',
-    '@babel/plugin-proposal-object-rest-spread',
-    '@babel/plugin-proposal-optional-chaining',
-    '@babel/plugin-proposal-nullish-coalescing-operator',
-    ['@babel/plugin-transform-runtime', { useESModules: true }],
-  ],
-  env: {
-    test: {
-      presets: [
-        [
-          '@babel/preset-env',
-          {
-            targets: {
-              node: 'current',
-            },
-          },
-        ],
-      ],
-    },
-  },
-};
+const config = require('./.babelrc.cjs');
+module.exports = config;
diff --git a/web/package.json b/web/package.json
--- a/web/package.json
+++ b/web/package.json
@@ -104,7 +104,7 @@
       "<rootDir>"
     ],
     "transform": {
-      "\\.js$": "babel-jest"
+      "\\.js$": ["babel-jest", { "rootMode": "upward" }]
     },
     "transformIgnorePatterns": [
       "/node_modules/(?!(@babel/runtime|thumbhash))"
diff --git a/web/webpack.config.cjs b/web/webpack.config.cjs
--- a/web/webpack.config.cjs
+++ b/web/webpack.config.cjs
@@ -9,7 +9,7 @@
   createWebWorkersConfig,
 } = require('lib/webpack/shared.cjs');
 
-const babelConfig = require('./babel.config.cjs');
+const babelConfig = require('./.babelrc.cjs');
 
 async function getConfig(configName) {
   const { getCommConfig } = await import(