Simplified proxy creation using prototypal inheritance

[kronodeus]

Figured it wouldn't hurt to cut down on boilerplate. Should be functionally equivalent.

[j4k0xb]

this crashes for me:

[error] Error: TypeScript Server Error (5.4.5)
this.languageService.getCurrentProgram is not a function
TypeError: this.languageService.getCurrentProgram is not a function
at ConfiguredProject2.updateGraphWorker (node_modules/typescript/lib/tsserver.js:179505:45)

but const proxy = { ...info.languageService }; works