Tracking external issues for bug fixing and improvements

[edoardocavazza]

🐛 Bugs

• Invalid coverage (Sourcemaps are missing closing braces evanw/esbuild#1448)
• Duplicated import statements for the same source (Useless repeated imports when using external modules evanw/esbuild#475)

⚡️ Speed

• Core URL assets (URL assets bundling evanw/esbuild#795)
• ES5 support (Lowering for ES5? evanw/esbuild#297, Support SystemJS as a format evanw/esbuild#192)

🧰 Maintenance

• Webpack comments (Support for magic comments in import() evanw/esbuild#1240)
• JSX import source (Add support for jsxImportSource evanw/esbuild#1172)
• Improve HTML generation ([Feature] Use html as start point for bundling evanw/esbuild#31)
• Use mocha spec reporter ([test-runner-mocha] implement mocha-style reporter modernweb-dev/web#229)

[okikio]

Quick question, I'd like to use @chialab/esbuild-plugin-worker together with gulp-esbuild as a plugin for loading workers, but I am not clear on how I'm supposed to do that. the docs don't mention how you create workers.