svelte missing custom element compile options
# Generate a JavaScript module from MyComponent.html
svelte compile MyComponent.html > MyComponent.js
svelte compile -i MyComponent.html -o MyComponent.js
# Generate a UMD module from MyComponent.html, inferring its name from the filename ('MyComponent')
svelte compile -f umd MyComponent.html > MyComponent.js
# Generate a UMD module, specifying the name
svelte compile -f umd -n CustomName MyComponent.html > MyComponent.js
# Compile all .html files in a directory
svelte compile -i src/components -o build/components