Fix webgpu support check failing if globalThis is undefined (#8073)

mattsoulanille · web-flow · commit 929b35db9553 · 2023-11-16T22:20:14.000Z
Fix WebGPU support not working on iOS, where globalThis is sometimes not
available.
diff --git a/tfjs-backend-webgpu/src/webgpu_util.ts b/tfjs-backend-webgpu/src/webgpu_util.ts
@@ -155,7 +155,8 @@ export function GPUBytesPerElement(dtype: DataType): number {
 }
 
 export function isWebGPUSupported(): boolean {
-  return !!(globalThis && (globalThis.navigator) && (globalThis.navigator.gpu));
+  return !!(typeof globalThis !== 'undefined' && (globalThis.navigator)
+    && (globalThis.navigator.gpu));
 }
 
 export function assertNotComplex(

Original file line number	Diff line number	Diff line change
`@@ -155,7 +155,8 @@ export function GPUBytesPerElement(dtype: DataType): number {`
`155`	`155`	`}`
`156`	`156`
`157`	`157`	`export function isWebGPUSupported(): boolean {`
`158`		`- return !!(globalThis && (globalThis.navigator) && (globalThis.navigator.gpu));`
	`158`	`+ return !!(typeof globalThis !== 'undefined' && (globalThis.navigator)`
	`159`	`+ && (globalThis.navigator.gpu));`
`159`	`160`	`}`
`160`	`161`
`161`	`162`	`export function assertNotComplex(`