== npm registry state ==
three latest: 0.185.1
vgpu latest: 0.3.1
PASS: vgpu@0.3.1 (version cited in vgpu-wgsl.md) exists on npm

== install real deps ==
exit: 0
node:internal/modules/cjs/loader:686
      throw e;
      ^

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './package.json' is not defined by "exports" in /private/tmp/shader-functional-20260902/proj/node_modules/three/package.json
    at exportsNotFound (node:internal/modules/esm/resolve:314:10)
    at packageExportsResolve (node:internal/modules/esm/resolve:662:9)
    at resolveExports (node:internal/modules/cjs/loader:679:36)
    at Module._findPath (node:internal/modules/cjs/loader:746:31)
    at Module._resolveFilename (node:internal/modules/cjs/loader:1433:27)
    at defaultResolveImpl (node:internal/modules/cjs/loader:1059:19)
    at resolveForCJSWithHooks (node:internal/modules/cjs/loader:1064:22)
    at Module._load (node:internal/modules/cjs/loader:1234:25)
    at TracingChannel.traceSync (node:diagnostics_channel:328:14)
    at wrapModuleLoad (node:internal/modules/cjs/loader:245:24) {
  code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
}

Node.js v24.13.1
vgpu resolved: 0.3.1

== three.js claims in glsl-patterns.md / color-direction.md ==
ShaderChunk tonemapping_fragment: EXISTS
ShaderChunk colorspace_fragment: EXISTS
compileAsync this-method in build: EXISTS
checkShaderErrors in build: EXISTS
SRGBColorSpace: srgb
NoColorSpace: 
GLSL3 enum: 300 es
PASS: ShaderChunk tonemapping_fragment exists (glsl-patterns.md claim)
PASS: ShaderChunk colorspace_fragment exists (glsl-patterns.md claim)
PASS: renderer.compileAsync exists (glsl-patterns.md claim)
PASS: renderer.debug.checkShaderErrors exists (glsl-patterns.md claim)
PASS: SRGBColorSpace export (textures-and-distortion.md claim)
PASS: NoColorSpace export (textures-and-distortion.md claim)
PASS: THREE.GLSL3 enum (glsl-patterns.md GLSL3 path)

== vgpu claims in vgpu-wgsl.md ==
PASS: VGPU-SURFACE-NOT-IN-FRAME error code real in vgpu@0.3.1
PASS: VGPU-DEVICE-LOST error code real in vgpu@0.3.1
vgpu exports: Geometry,Uniform,VGPUError,bundle,clock,compute,draw,effect,frame,frameLoop,geometry,init,initFromDevice,pingPong,pingPongStorage,sampler,storage,surface,target,timer,uniforms,visibility
PASS: contained-renderer APIs present (init, surface, effect, draw, frameLoop, clock)
PASS: TargetSignature type real (compile() signature claim)
docs cat exit: 0, bytes: 5972
PASS: documented 'vgpu docs cat' command works as written
check --help exit: 1 (help text often exits non-zero)
PASS: 'vgpu check' validation command exists (validation-gate claim, usage printed)
PASS: '--require-validation' device-backed flag real (validation-gate claim)

functional pass rate: 15/15