diff --git a/react/features/base/styles/createStyleSheet.js b/react/features/base/styles/createStyleSheet.js
deleted file mode 100644
index 7af74c01f..000000000
--- a/react/features/base/styles/createStyleSheet.js
+++ /dev/null
@@ -1,24 +0,0 @@
-import { shimStyles } from './shimStyles';
-
-/**
- * Create a style sheet using the provided style definitions.
- *
- * @param {Object} styles - A dictionary of named style definitions.
- * @param {Object} [overrides={}] - Optional set of additional (often
- * platform-dependent/specific) style definitions that will override the base
- * (often platform-independent) styles.
- * @returns {Object}
- */
-export function createStyleSheet(styles, overrides = {}) {
-    const combinedStyles = {};
-
-    for (const k of Object.keys(styles)) {
-        combinedStyles[k]
-            = shimStyles({
-                ...styles[k],
-                ...overrides[k]
-            });
-    }
-
-    return combinedStyles;
-}
diff --git a/react/features/base/styles/functions.js b/react/features/base/styles/functions.js
new file mode 100644
index 000000000..eaf2a150e
--- /dev/null
+++ b/react/features/base/styles/functions.js
@@ -0,0 +1,73 @@
+/* @flow */
+
+declare type StyleSheet = Object;
+
+/**
+ * The list of the well-known style properties which may not be numbers on Web
+ * but must be numbers on React Native.
+ *
+ * @private
+ */
+const _WELL_KNOWN_NUMBER_PROPERTIES = [ 'height', 'width' ];
+
+/* eslint-disable flowtype/space-before-type-colon */
+
+/**
+ * Create a style sheet using the provided style definitions.
+ *
+ * @param {StyleSheet} styles - A dictionary of named style definitions.
+ * @param {StyleSheet} [overrides={}] - Optional set of additional (often
+ * platform-dependent/specific) style definitions that will override the base
+ * (often platform-independent) styles.
+ * @returns {StyleSheet}
+ */
+export function createStyleSheet(styles: StyleSheet, overrides: StyleSheet = {})
+        : StyleSheet {
+
+/* eslint-enable flowtype/space-before-type-colon */
+
+    const combinedStyles = {};
+
+    for (const k of Object.keys(styles)) {
+        combinedStyles[k]
+            = _shimStyles({
+                ...styles[k],
+                ...overrides[k]
+            });
+    }
+
+    return combinedStyles;
+}
+
+/**
+ * Shims style properties to work correctly on native. Allows us to minimize the
+ * number of style declarations that need to be set or overridden for specific
+ * platforms.
+ *
+ * @param {StyleSheet} styles - An object which represents a stylesheet.
+ * @private
+ * @returns {StyleSheet}
+ */
+function _shimStyles<T: StyleSheet>(styles: T): T {
+    // Certain style properties may not be numbers on Web but must be numbers on
+    // React Native. For example, height and width may be expressed in percent
+    // on Web but React Native will not understand them and we will get errors
+    // (at least during development). Convert such well-known properties to
+    // numbers if possible; otherwise, remove them to avoid runtime errors.
+    for (const k of _WELL_KNOWN_NUMBER_PROPERTIES) {
+        const v = styles[k];
+        const typeofV = typeof v;
+
+        if (typeofV !== 'undefined' && typeofV !== 'number') {
+            const numberV = Number(v);
+
+            if (Number.isNaN(numberV)) {
+                delete styles[k];
+            } else {
+                styles[k] = numberV;
+            }
+        }
+    }
+
+    return styles;
+}
diff --git a/react/features/base/styles/index.js b/react/features/base/styles/index.js
index 28ce1978b..8b45add51 100644
--- a/react/features/base/styles/index.js
+++ b/react/features/base/styles/index.js
@@ -1,2 +1,2 @@
 export * from './components';
-export * from './createStyleSheet';
+export * from './functions';
diff --git a/react/features/base/styles/shimStyles.native.js b/react/features/base/styles/shimStyles.native.js
deleted file mode 100644
index 2fef643a7..000000000
--- a/react/features/base/styles/shimStyles.native.js
+++ /dev/null
@@ -1,38 +0,0 @@
-/**
- * The list of the well-known style properties which may not be numbers on Web
- * but must be numbers on React Native.
- */
-const WELL_KNOWN_NUMBER_PROPERTIES = [ 'height', 'width' ];
-
-/**
- * Shim style properties to work correctly on native.
- *
- * Using this shimStyles method allows us to minimize the number of style
- * declarations that need to be set or overridden for specific platforms.
- *
- * @param {Object} styles - A dictionary of named style definitions.
- * @returns {Object}
- */
-export function shimStyles(styles) {
-    // Certain style properties may not be numbers on Web but must be numbers on
-    // React Native. For example, height and width may be expressed in percent
-    // on Web but React Native will not understand them and we will get errors
-    // (at least during development). Convert such well-known properties to
-    // numbers if possible; otherwise, remove them to avoid runtime errors.
-    for (const k of WELL_KNOWN_NUMBER_PROPERTIES) {
-        const v = styles[k];
-        const typeofV = typeof v;
-
-        if (typeofV !== 'undefined' && typeofV !== 'number') {
-            const numberV = Number(v);
-
-            if (Number.isNaN(numberV)) {
-                delete styles[k];
-            } else {
-                styles[k] = numberV;
-            }
-        }
-    }
-
-    return styles;
-}