// TODO: this is all copy pasted from Vite - can they expose a module that exports only constants?

export const KNOWN_ASSET_TYPES: string[] = [
  // images
  'apng',
  'bmp',
  'png',
  'jpe?g',
  'jfif',
  'pjpeg',
  'pjp',
  'gif',
  'svg',
  'ico',
  'webp',
  'avif',

  // media
  'mp4',
  'webm',
  'ogg',
  'mp3',
  'wav',
  'flac',
  'aac',

  // fonts
  'woff2?',
  'eot',
  'ttf',
  'otf',

  // other
  'webmanifest',
  'pdf',
  'txt',
]

export const KNOWN_ASSET_RE: RegExp = new RegExp(`\\.(${KNOWN_ASSET_TYPES.join('|')})$`)
export const CSS_LANGS_RE: RegExp = /\.(css|less|sass|scss|styl|stylus|pcss|postcss|sss)(?:$|\?)/
/**
 * Prefix for resolved Ids that are not valid browser import specifiers
 */
export 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}`
 */
export const NULL_BYTE_PLACEHOLDER = `__x00__`