TypeScript syntax highlighting is broken when using backticks and equals signs on a single line

[niieani]

• VSCode Version: 1.23-0-insider
• OS Version: macOS

Steps to Reproduce:

1. Enter the following code in a .ts file:

const example = () => (
  {example: "`x=y`"} // everything after this line is highlighted like a string
)

const brokenHighlighting = true

Interestingly, the same issue occurs with:

const example = () => (
  {example: `x=y`} // everything after this line is highlighted like a string
)

const brokenHighlighting = true

But it does not occur when the preceding bracket ( is on the same line as {:

const example = () => ({
  example: "`x=y`"
})

Does this issue occur when all extensions are disabled?: Yes

This does not occur in latest stable v1.22.2, so this is a regression.

[mjbvz]

This issue was moved to microsoft/TypeScript-TmLanguage#608