Upgrade Node.js, TypeScript, TSLint, Babel, etc. in `build-tools` (#2009)
Upgrade Node.js, TypeScript, TSLint, Babel, etc. in `build-tools` (#2009)

* Upgrade Node.js, TypeScript, TSLint, Babel in build-tools

Signed-off-by: Xiaoyang Liu <fe2d25028837695f20ec7204bdafb623bebd83d0@gmail.com>

* Fix the error 'Tracker idealTree already exists'

Signed-off-by: Xiaoyang Liu <fe2d25028837695f20ec7204bdafb623bebd83d0@gmail.com>
istio/tools,istio/tools,istio/tools,istio/tools,istio/tools,istio/tools