1 files changed, 62 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/webgpu/constants.ts b/dom/webgpu/tests/cts/checkout/src/webgpu/constants.ts
new file mode 100644
index 0000000000..6a44983b53
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/webgpu/constants.ts
@@ -0,0 +1,62 @@
+// Note: Types ensure every field is specified.
+
+/* eslint-disable-next-line @typescript-eslint/no-unused-vars */
+function checkType<T>(x: T) {}
+
+const BufferUsage = {
+  MAP_READ: 0x0001,
+  MAP_WRITE: 0x0002,
+  COPY_SRC: 0x0004,
+  COPY_DST: 0x0008,
+  INDEX: 0x0010,
+  VERTEX: 0x0020,
+  UNIFORM: 0x0040,
+  STORAGE: 0x0080,
+  INDIRECT: 0x0100,
+  QUERY_RESOLVE: 0x0200,
+} as const;
+checkType<Omit<GPUBufferUsage, '__brand'>>(BufferUsage);
+
+const TextureUsage = {
+  COPY_SRC: 0x01,
+  COPY_DST: 0x02,
+  TEXTURE_BINDING: 0x04,
+  SAMPLED: 0x04,
+  STORAGE_BINDING: 0x08,
+  STORAGE: 0x08,
+  RENDER_ATTACHMENT: 0x10,
+} as const;
+checkType<Omit<GPUTextureUsage, '__brand'>>(TextureUsage);
+
+const ColorWrite = {
+  RED: 0x1,
+  GREEN: 0x2,
+  BLUE: 0x4,
+  ALPHA: 0x8,
+  ALL: 0xf,
+} as const;
+checkType<Omit<GPUColorWrite, '__brand'>>(ColorWrite);
+
+const ShaderStage = {
+  VERTEX: 0x1,
+  FRAGMENT: 0x2,
+  COMPUTE: 0x4,
+} as const;
+checkType<Omit<GPUShaderStage, '__brand'>>(ShaderStage);
+
+const MapMode = {
+  READ: 0x1,
+  WRITE: 0x2,
+} as const;
+checkType<Omit<GPUMapMode, '__brand'>>(MapMode);
+
+export const GPUConst = {
+  BufferUsage,
+  TextureUsage,
+  ColorWrite,
+  ShaderStage,
+  MapMode,
+} as const;
+
+export const kMaxUnsignedLongValue = 4294967295;
+export const kMaxUnsignedLongLongValue = Number.MAX_SAFE_INTEGER;