Cast to 'unknown' instead of '{}' in double assertions (#7116)

Avoid casting through '{}' with 'foo as {} as Bar' and instead use 'unknown', i.e. 'foo as unknown as Bar'. This is the preferred method according to Google's style guide. Internal link: go/tsstyle#double-assertions.

Author: mattsoulanille

tfjs-backend-cpu/src/backend_cpu.ts

@@ -82,7 +82,7 @@ export class MathBackendCPU extends KernelBackend {
     if (dtype === 'string' && values != null && values.length > 0 &&
         util.isString(values[0])) {
       const encodedValues =
-          (values as {} as string[]).map(d => util.encodeString(d));
+          (values as unknown as string[]).map(d => util.encodeString(d));
 
       outId = this.write(encodedValues, shape, dtype);
     } else {

tfjs-backend-cpu/src/kernels/Abs.ts

@@ -44,5 +44,5 @@ export const abs = (args: {inputs: AbsInputs, backend: MathBackendCPU}) => {
 export const absConfig: KernelConfig = {
   kernelName: Abs,
   backendName: 'cpu',
-  kernelFunc: abs as {} as KernelFunc,
+  kernelFunc: abs as unknown as KernelFunc,
 };

tfjs-backend-cpu/src/kernels/AddN.ts

@@ -44,5 +44,5 @@ export function addN(args: {inputs: AddNInputs, backend: MathBackendCPU}):
 export const addNConfig: KernelConfig = {
   kernelName: AddN,
   backendName: 'cpu',
-  kernelFunc: addN as {} as KernelFunc
+  kernelFunc: addN as unknown as KernelFunc
 };

tfjs-backend-cpu/src/kernels/All.ts

@@ -79,5 +79,5 @@ export function all(
 export const allConfig: KernelConfig = {
   kernelName: All,
   backendName: 'cpu',
-  kernelFunc: all as {} as KernelFunc
+  kernelFunc: all as unknown as KernelFunc
 };

tfjs-backend-cpu/src/kernels/Any.ts

@@ -79,5 +79,5 @@ export function any(
 export const anyConfig: KernelConfig = {
   kernelName: Any,
   backendName: 'cpu',
-  kernelFunc: any as {} as KernelFunc
+  kernelFunc: any as unknown as KernelFunc
 };

tfjs-backend-cpu/src/kernels/ArgMax.ts

@@ -73,5 +73,5 @@ export function argMax(
 export const argMaxConfig: KernelConfig = {
   kernelName: ArgMax,
   backendName: 'cpu',
-  kernelFunc: argMax as {} as KernelFunc
+  kernelFunc: argMax as unknown as KernelFunc
 };

tfjs-backend-cpu/src/kernels/ArgMin.ts

@@ -73,5 +73,5 @@ export function argMin(
 export const argMinConfig: KernelConfig = {
   kernelName: ArgMin,
   backendName: 'cpu',
-  kernelFunc: argMin as {} as KernelFunc
+  kernelFunc: argMin as unknown as KernelFunc
 };

tfjs-backend-cpu/src/kernels/AvgPool.ts

@@ -57,5 +57,5 @@ export function avgPool(
 export const avgPoolConfig: KernelConfig = {
   kernelName: AvgPool,
   backendName: 'cpu',
-  kernelFunc: avgPool as {} as KernelFunc
+  kernelFunc: avgPool as unknown as KernelFunc
 };

tfjs-backend-cpu/src/kernels/AvgPool3D.ts

@@ -46,5 +46,5 @@ export function avgPool3D(args: {
 export const avgPool3DConfig: KernelConfig = {
   kernelName: AvgPool3D,
   backendName: 'cpu',
-  kernelFunc: avgPool3D as {} as KernelFunc
+  kernelFunc: avgPool3D as unknown as KernelFunc
 };

tfjs-backend-cpu/src/kernels/AvgPool3DGrad.ts

@@ -108,5 +108,5 @@ export function avgPool3DGrad(args: {
 export const avgPool3DGradConfig: KernelConfig = {
   kernelName: AvgPool3DGrad,
   backendName: 'cpu',
-  kernelFunc: avgPool3DGrad as {} as KernelFunc
+  kernelFunc: avgPool3DGrad as unknown as KernelFunc
 };