// TODO: this is all copy pasted from Vite - can they expose a module that exports only constants?
const KNOWN_ASSET_TYPES = [
	"apng",
	"bmp",
	"png",
	"jpe?g",
	"jfif",
	"pjpeg",
	"pjp",
	"gif",
	"svg",
	"ico",
	"webp",
	"avif",
	"mp4",
	"webm",
	"ogg",
	"mp3",
	"wav",
	"flac",
	"aac",
	"woff2?",
	"eot",
	"ttf",
	"otf",
	"webmanifest",
	"pdf",
	"txt"
];
const KNOWN_ASSET_RE = new RegExp(`\\.(${KNOWN_ASSET_TYPES.join("|")})$`);
const CSS_LANGS_RE = /\.(css|less|sass|scss|styl|stylus|pcss|postcss|sss)(?:$|\?)/;
/**
* Prefix for resolved Ids that are not valid browser import specifiers
*/
const VALID_ID_PREFIX = `/@id/`;
/**
* Plugins that use 'virtual modules' (e.g. for helper functions), prefix the
* module ID with `\0`, a convention from the rollup ecosystem.
* This prevents other plugins from trying to process the id (like node resolution),
* and core features like sourcemaps can use this info to differentiate between
* virtual modules and regular files.
* `\0` is not a permitted char in import URLs so we have to replace them during
* import analysis. The id will be decoded back before entering the plugins pipeline.
* These encoded virtual ids are also prefixed by the VALID_ID_PREFIX, so virtual
* modules in the browser end up encoded as `/@id/__x00__{id}`
*/
const NULL_BYTE_PLACEHOLDER = `__x00__`;

export { CSS_LANGS_RE, KNOWN_ASSET_RE, KNOWN_ASSET_TYPES, NULL_BYTE_PLACEHOLDER, VALID_ID_PREFIX };