diff --git a/Libraries/StyleSheet/__tests__/__snapshots__/processTransform-test.js.snap b/Libraries/StyleSheet/__tests__/__snapshots__/processTransform-test.js.snap
new file mode 100644
index 00000000000000..548a7a81410dac
--- /dev/null
+++ b/Libraries/StyleSheet/__tests__/__snapshots__/processTransform-test.js.snap
@@ -0,0 +1,27 @@
+exports[`processTransform validation should throw on invalid transform property 1`] = `"Invalid transform translateW: {\"translateW\":10}"`;
+
+exports[`processTransform validation should throw on object with multiple properties 1`] = `"You must specify exactly one property per transform object. Passed properties: {\"scale\":0.5,\"translateY\":10}"`;
+
+exports[`processTransform validation should throw when not passing an array to an array prop 1`] = `"Transform with key of matrix must have an array as the value: {\"matrix\":\"not-a-matrix\"}"`;
+
+exports[`processTransform validation should throw when not passing an array to an array prop 2`] = `"Transform with key of translate must have an array as the value: {\"translate\":10}"`;
+
+exports[`processTransform validation should throw when passing a matrix of the wrong size 1`] = `"Matrix transform must have a length of 9 (2d) or 16 (3d). Provided matrix has a length of 4: {\"matrix\":[1,1,1,1]}"`;
+
+exports[`processTransform validation should throw when passing a perspective of 0 1`] = `"Transform with key of \"perspective\" cannot be zero: {\"perspective\":0}"`;
+
+exports[`processTransform validation should throw when passing a translate of the wrong size 1`] = `"Transform with key translate must be an array of length 2 or 3, found 1: {\"translate\":[1]}"`;
+
+exports[`processTransform validation should throw when passing a translate of the wrong size 2`] = `"Transform with key translate must be an array of length 2 or 3, found 4: {\"translate\":[1,1,1,1]}"`;
+
+exports[`processTransform validation should throw when passing an Animated.Value 1`] = `"You passed an Animated.Value to a normal component. You need to wrap that component in an Animated. For example, replace by ."`;
+
+exports[`processTransform validation should throw when passing an invalid angle prop 1`] = `"Transform with key of \"rotate\" must be a string: {\"rotate\":10}"`;
+
+exports[`processTransform validation should throw when passing an invalid angle prop 2`] = `"Rotate transform must be expressed in degrees (deg) or radians (rad): {\"skewX\":\"10drg\"}"`;
+
+exports[`processTransform validation should throw when passing an invalid value to a number prop 1`] = `"Transform with key of \"translateY\" must be a number: {\"translateY\":\"20deg\"}"`;
+
+exports[`processTransform validation should throw when passing an invalid value to a number prop 2`] = `"Transform with key of \"scale\" must be a number: {\"scale\":{\"x\":10,\"y\":10}}"`;
+
+exports[`processTransform validation should throw when passing an invalid value to a number prop 3`] = `"Transform with key of \"perspective\" must be a number: {\"perspective\":[]}"`;
diff --git a/Libraries/StyleSheet/__tests__/processTransform-test.js b/Libraries/StyleSheet/__tests__/processTransform-test.js
new file mode 100644
index 00000000000000..ac5cde1ccb2d9f
--- /dev/null
+++ b/Libraries/StyleSheet/__tests__/processTransform-test.js
@@ -0,0 +1,86 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+'use strict';
+
+jest.disableAutomock();
+
+const processTransform = require('processTransform');
+
+describe('processTransform', () => {
+ describe('validation', () => {
+ it('should accept an empty array', () => {
+ processTransform([]);
+ });
+
+ it('should accept a simple valid transform', () => {
+ processTransform([
+ {scale: 0.5},
+ {translateX: 10},
+ {translateY: 20},
+ {rotate: '10deg'},
+ ]);
+ });
+
+ it('should throw on object with multiple properties', () => {
+ expect(() => processTransform([{scale: 0.5, translateY: 10}])).toThrowErrorMatchingSnapshot();
+ });
+
+ it('should throw on invalid transform property', () => {
+ expect(() => processTransform([{translateW: 10}])).toThrowErrorMatchingSnapshot();
+ });
+
+ it('should throw when not passing an array to an array prop', () => {
+ expect(() => processTransform([{matrix: 'not-a-matrix'}])).toThrowErrorMatchingSnapshot();
+ expect(() => processTransform([{translate: 10}])).toThrowErrorMatchingSnapshot();
+ });
+
+ it('should accept a valid matrix', () => {
+ processTransform([{matrix: [1, 1, 1, 1, 1, 1, 1, 1, 1]}]);
+ processTransform([{matrix: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}]);
+ });
+
+ it('should throw when passing a matrix of the wrong size', () => {
+ expect(() => processTransform([{matrix: [1, 1, 1, 1]}])).toThrowErrorMatchingSnapshot();
+ });
+
+ it('should accept a valid translate', () => {
+ processTransform([{translate: [1, 1]}]);
+ processTransform([{translate: [1, 1, 1]}]);
+ });
+
+ it('should throw when passing a translate of the wrong size', () => {
+ expect(() => processTransform([{translate: [1]}])).toThrowErrorMatchingSnapshot();
+ expect(() => processTransform([{translate: [1, 1, 1, 1]}])).toThrowErrorMatchingSnapshot();
+ });
+
+ it('should throw when passing an invalid value to a number prop', () => {
+ expect(() => processTransform([{translateY: '20deg'}])).toThrowErrorMatchingSnapshot();
+ expect(() => processTransform([{scale: {x: 10, y: 10}}])).toThrowErrorMatchingSnapshot();
+ expect(() => processTransform([{perspective: []}])).toThrowErrorMatchingSnapshot();
+ });
+
+ it('should throw when passing a perspective of 0', () => {
+ expect(() => processTransform([{perspective: 0}])).toThrowErrorMatchingSnapshot();
+ });
+
+ it('should accept an angle in degrees or radians', () => {
+ processTransform([{skewY: '10deg'}]);
+ processTransform([{rotateX: '1.16rad'}]);
+ });
+
+ it('should throw when passing an invalid angle prop', () => {
+ expect(() => processTransform([{rotate: 10}])).toThrowErrorMatchingSnapshot();
+ expect(() => processTransform([{skewX: '10drg'}])).toThrowErrorMatchingSnapshot();
+ });
+
+ it('should throw when passing an Animated.Value', () => {
+ expect(() => processTransform([{rotate: {getValue: () => {}}}])).toThrowErrorMatchingSnapshot();
+ });
+ });
+});
diff --git a/Libraries/StyleSheet/processTransform.js b/Libraries/StyleSheet/processTransform.js
index a00dc1d0196b9b..695bb07f0f1e0a 100644
--- a/Libraries/StyleSheet/processTransform.js
+++ b/Libraries/StyleSheet/processTransform.js
@@ -25,7 +25,7 @@ var stringifySafe = require('stringifySafe');
* be applied in an arbitrary order, and yet have a universal, singular
* interface to native code.
*/
-function processTransform(transform: Object): Object {
+function processTransform(transform: Array