fix: false-positive error 'ts server not found' if project wasn't open

[vlad0337187]

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Identify the Bug

Didn't create new issue, because this is realted to changes, made in: #154
If to open project without locally specified TS server path, it will show error alert.
Also if to open project with locally specified TS server path, it'll show error alert anyway, because project path is not always set.

Description of the Change

Just check that path doesn't exist and do nothing.
Also did a little refactor for already added code.

Alternate Designs

just a fix

Possible Drawbacks

Didn't find such, use this fix locally for near one month.

Verification Process

Use this plugin with my typescript project near one month.

Release Notes

[vlad0337187]

Fixed found caused by recent PR issue.
If anybody will have some time to review and merge - would be grateful =)

@Aerijo
@damieng
@darangi
@jasonrudolph
@dmleong
@daviwil

[vlad0337187]

Sorry for pinging about this. Just wanna leave a notification.

@Aerijo
@damieng
@darangi
@jasonrudolph
@dmleong
@daviwil

[damieng]

Please stop "pinging" everybody who ever contributed to this repo. This project was discontinued by github and most of the people on your list are no longer involved or have access.

Darangi is seemingly the only active contributor. If they can respond they will.

[darangi]

@vlad0337187 Thanks for the contributions 🙇🏾