"arRenderer" can be undefined in Controls.ts

[NicoPennec]

Since the latest release v4.2.0, this new error may occur:

Cannot read properties of null (reading 'isPresenting')

Related to an undefined value in controls.ts > [$syncCameraTarget] > arRenderer:

model-viewer/packages/model-viewer/src/features/controls.ts

Line 756 in edf2f3f

if (!this[$renderer].arRenderer.isPresenting) {

Reproduce on the following rowsers (issue tracked by Sentry):

• Chrome 146.0.0
• Chrome 145.0.0
• Chrome 144.0.0
• Chrome 142.0.0
• Firefox 149.0
• Firefox 148.0
• Firefox 147.0
• Edge 146.0.0
• ...

Stack Trace

TypeError: Cannot read properties of null (reading 'isPresenting')
  at y.<computed>(../../node_modules/@google/model-viewer/lib/features/controls.js:513:45)
  at <object>.value(../../node_modules/@google/model-viewer/lib/decorators.js:86:33)
  at <object>.updated.value(../../node_modules/@google/model-viewer/lib/decorators.js:96:30)
  at <object>.updated.value(../../node_modules/@google/model-viewer/lib/decorators.js:98:37)
  at <object>.updated.value(../../node_modules/@google/model-viewer/lib/decorators.js:98:37)
  at <object>.updated.value(../../node_modules/@google/model-viewer/lib/decorators.js:98:37)
  at <object>.updated.value(../../node_modules/@google/model-viewer/lib/decorators.js:98:37)
  at <object>.updated.value(../../node_modules/@google/model-viewer/lib/decorators.js:98:37)
  at i.updated(../../node_modules/@google/model-viewer/lib/features/environment.js:51:19)
  at i.updated(../../node_modules/@google/model-viewer/lib/features/staging.js:68:19)
  at <object>.updated.value(../../node_modules/@google/model-viewer/lib/decorators.js:98:37)
  at i.updated(../../node_modules/@google/model-viewer/lib/features/scene-graph.js:105:19)
  at y._$AE(../../node_modules/@lit/reactive-element/reactive-element.js:6:5456)
  at y.performUpdate(../../node_modules/@lit/reactive-element/reactive-element.js:6:5320)
  at y.scheduleUpdate(../../node_modules/@lit/reactive-element/reactive-element.js:6:4775)
  at y._$EP(../../node_modules/@lit/reactive-element/reactive-element.js:6:4683)
  at y._$EP(../../node_modules/@lit/reactive-element/reactive-element.js:6:4627)