Bug Report

Current Behavior
SyntaxError: Identifier 'foo' has already been declared

Input Code

declare class foo {
}
declare module 'bar' {
  export var foo: any; // Identifier 'foo' has already been declared
}

Expected behavior/code
no error

Babel Configuration (.babelrc, package.json, cli command)
typescript plugin

Environment

• Babel version(s): 7.4.5
• Node/npm version: Node 11.13 / npm 6.7

Possible Solution
In tsParseModuleBlock(), should change its scope to SCOPE_VAR or something new.