Throw error if TypeScript class has empty implements

[existentialism]

Q	A
Fixed Issues?	Fixes #9286
Patch: Bug Fix?	Y
Major: Breaking Change?	N
Minor: New Feature?	N
Tests Added + Pass?	Yes
Documentation PR Link
Any Dependency Changes?
License	MIT

[babel-bot]

Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/9718/

Since the same function is used to parse foo<X, Y>(), maybe we should move the check to tsParseDelimitedList?

[armano2]

i just checked and looks like error is missing also in interface heritage
this PR is going to add error for it but with wrong message.

'extends' list cannot be empty.

interface foo extends {
}

babel/packages/babel-parser/src/plugins/typescript.js

Line 1890 in ff467e4

node.implements = this.tsParseHeritageClause();

babel/packages/babel-parser/src/plugins/typescript.js

Line 941 in ff467e4

node.extends = this.tsParseHeritageClause();

[existentialism]

@armano2 Updated to handle interface/extends as well.

@nicolo-ribaudo will follow-up with another PR that improves the error message for foo<>(), it's not as straightforward to handle directly inside tsParseDelimitedList due to all of our try/catches for maybe parsing things.