I'm going to go ahead and decent from the consensus by saying: it is okay.
TypeScript is JavaScript. You're still going to learn all the fundamentals of JavaScript, it's just going to be sugarcoated with type-safety.
However, I think it would be a bad idea to apply for a position looking for a JS dev if you've never actually written plain JavaScript. If you're writing TypeScript, you're almost certainly writing ES 2015+ syntax. There's a ton of ES5 (and below) code out there today in production so it's quite likely you'll run into it in the future.
Without strict typing and modern syntax, you'll probably be in over your head a little bit. Old JS blows! The days of jQuery were dark indeed. So I really suggest after you get the basics(let/const, types, loops, arrays, objects, classes, npm, etc) you make a concerted effort to go back and rewrite some of that same code in ES5. That will force you to understand prototypes, closures, the various class patterns, JavaScript's numerous quirks, etc. Once you have atleast a mild understanding of that, read into how babel and webpack work; that will make you a pro!
Starting off with TS might make the transition from a strictly typed language smoother, just don't neglect to learn about ugly bits.