I've been in e-commerce for 6 years now after leaving the homebuilding industry in the last market crash. Starting out in User Interface design, I've worked on websites totaling over $1 Billion in annual revenue. I transitioned to User Experience Architecture in 2013. I have worked on projects that were both customer facing and enterprise applications. Now I manage a team of Front-End developers for Pier1.com
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We have a front-end repo, back-end repo, and a pattern/style guide repo. They all work together to form the whole site but they are kept separate because they are versioned separate. The workflows are different and the teams are different. Sometimes in an enterprise setting, like ours, you can do multiple repos for one project depending on the team structure, technologies being used, and the security necessary for the application.
I would add. Don't hop around too much because some companies that are good for a long term role don't like to hire people that have a reputation of jumping for salary. I use a 20% rule. Everything summed up has to net out to 20% better than my current role or I don't move (salary, commute, company culture, work-life balance, etc).
While AI may replace a lot of redundant things we do it will never be able to understand the intent of a UI enough to build responsive, reusable, & modular code. It's been a subject we've seen before and it's a novelty at best. But this is just my opinion.
Find a small business that could benefit from a technology you can build, build it for them, let them use it as a beta tester for free and then sell it to other similar businesses. It's like your own little micro startup. If you can sell it you can make some money, otherwise you got some practice helped out a local business.
Similar to what @chakrihacker said. Just rename the directory or if it's files, place in a tmp directory while you do your other deployment tasks. After all other tasks are complete and you've verified the deployment to be successful, backup what was in the tmp directory and remove it.
Because they can't collectively afford 100,000 people at 300k per year. Demand is not the only driver to what you pay for something. Companies will put off business initiatives if they can't find the right developers at the right price. It would be bad business sense to hire people at too high a rate just to get a few more projects completed faster.
Short Answer from someone who has been hiring front-end devs recently, no. I've interviewed people from 6-12 week bootcamps who don't know enough to build even the most basic of features. My feelings on the ROI of most bootcamps is another discussion topic entirely. @tomhodgins said it best. I think that even the smartest, fastest learning, hardest working individuals would still take around 6 months of daily learning and practice to be proficient enough to work full-time doing JavaScript.