/**
 * parse reads markdown source at s and converts it to HTML.
 * When output is a byte array, it will be a reference.
 */
export function parse(s :Source, o? :ParseOptions & { bytes? :never|false }) :string
export function parse(s :Source, o? :ParseOptions & { bytes :true }) :Uint8Array

/** Markdown source code can be provided as a JavaScript string or UTF8 encoded data */
type Source = string | ArrayLike<number>

/** Options for the parse function */
export interface ParseOptions {
  /** Customize parsing. Defaults to ParseFlags.DEFAULT */
  parseFlags? :ParseFlags

  /** Select output format. Defaults to "html" */
  format? : "html" | "xhtml"

  /**
   * bytes=true causes parse() to return the result as a Uint8Array instead of a string.
   *
   * The returned Uint8Array is only valid until the next call to parse().
   * If you need to keep the returned data around, call Uint8Array.slice() to make a copy,
   * as each call to parse() uses the same underlying memory.
   *
   * This only provides a performance benefit when you never need to convert the output
   * to a string. In most cases you're better off leaving this unset or false.
   */
  bytes? :boolean

  /** @depreceated use "bytes" instead (v1.1.1) */
  asMemoryView? :boolean
}

/** Flags that customize Markdown parsing */
export enum ParseFlags {
  /** In TEXT, collapse non-trivial whitespace into single ' ' */ COLLAPSE_WHITESPACE,
  /** Enable $ and $$ containing LaTeX equations. */              LATEX_MATH_SPANS,
  /** Disable raw HTML blocks. */                                 NO_HTML_BLOCKS,
  /** Disable raw HTML (inline). */                               NO_HTML_SPANS,
  /** Disable indented code blocks. (Only fenced code works.) */  NO_INDENTED_CODE_BLOCKS,
  /** Do not require space in ATX headers ( ###header ) */        PERMISSIVE_ATX_HEADERS,
  /** Recognize e-mails as links even without <...> */            PERMISSIVE_EMAIL_AUTO_LINKS,
  /** Recognize URLs as links even without <...> */               PERMISSIVE_URL_AUTO_LINKS,
  /** Enable WWW autolinks (without proto; just 'www.') */        PERMISSIVE_WWW_AUTOLINKS,
  /** Enable strikethrough extension. */                          STRIKETHROUGH,
  /** Enable tables extension. */                                 TABLES,
  /** Enable task list extension. */                              TASK_LISTS,
  /** Enable wiki links extension. */                             WIKI_LINKS,
  /** Enable underline extension (disables '_' for emphasis) */   UNDERLINE,

  /** Default flags are:
   *    COLLAPSE_WHITESPACE |
   *    PERMISSIVE_ATX_HEADERS |
   *    PERMISSIVE_URL_AUTO_LINKS |
   *    STRIKETHROUGH |
   *    TABLES |
   *    TASK_LISTS
   */
  DEFAULT,

  /** Shorthand for NO_HTML_BLOCKS | NO_HTML_SPANS */
  NO_HTML,
}