WorkerGlobalScope：isSecureContext 属性
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2018年4月.
WorkerGlobalScope 接口的 isSecureContext 只读属性返回一个布尔值，指示当前上下文是安全的（true）还是不安全的（false）。