能否支持一下angular？

[Shanzhi Chen]

好像不支持angular项目？试了一下报错。

core.mjs:6485 ERROR Error: Uncaught (in promise): TypeError: Cannot read properties of null (reading 'append')
TypeError: Cannot read properties of null (reading 'append')
at Watermark. (index.js:350:23)
at Generator.next ()
at fulfilled (index.js:25:24)
at ZoneDelegate.invoke (zone.js:372:1)
at Object.onInvoke (core.mjs:25488:1)
at ZoneDelegate.invoke (zone.js:371:1)
at Zone.run (zone.js:134:1)
at zone.js:1276:1
at ZoneDelegate.invokeTask (zone.js:406:1)
at Object.onInvokeTask (core.mjs:25475:1)
at ZoneDelegate.invokeTask (zone.js:405:1)
at Zone.runTask (zone.js:178:1)
at drainMicroTaskQueue (zone.js:582:1)
at invokeTask (zone.js:491:1)
at ZoneTask.invoke (zone.js:476:1)
at resolvePromise (zone.js:1213:1) [angular]
at :8100/polyfills.js:4261:17 [angular]
at fulfilled (index.js:27:9) [angular]
at Object.onInvoke (core.mjs:25488:1) [angular]
at :8100/polyfills.js:4417:36 [angular]
at Object.onInvokeTask (core.mjs:25475:1) [angular]
at drainMicroTaskQueue (zone.js:582:1) []
at invokeTask (zone.js:491:1) []

[wangxingkang]

暂时不支持的，不是很了解 angular 欢迎PR