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/**
* Parses an HTML string, calling the callbacks to notify of tags and text.
*
* ## History
*
* This file previously used a regular expression to find html tags in the input
* text. Unfortunately, we ran into a bunch of catastrophic backtracking issues
* with certain input text, causing Autolinker to either hang or just take a
* really long time to parse the string.
*
* The current code is intended to be a O(n) algorithm that walks through
* the string in one pass, and tries to be as cheap as possible. We don't need
* to implement the full HTML spec, but rather simply determine where the string
* looks like an HTML tag, and where it looks like text (so that we can autolink
* that).
*
* This state machine parser is intended just to be a simple but performant
* parser of HTML for the subset of requirements we have. We simply need to:
*
* 1. Determine where HTML tags are
* 2. Determine the tag name (Autolinker specifically only cares about <a>,
* <script>, and <style> tags, so as not to link any text within them)
*
* We don't need to:
*
* 1. Create a parse tree
* 2. Auto-close tags with invalid markup
* 3. etc.
*
* The other intention behind this is that we didn't want to add external
* dependencies on the Autolinker utility which would increase its size. For
* instance, adding htmlparser2 adds 125kb to the minified output file,
* increasing its final size from 47kb to 172kb (at the time of writing). It
* also doesn't work exactly correctly, treating the string "<3 blah blah blah"
* as an HTML tag.
*
* Reference for HTML spec:
*
* https://www.w3.org/TR/html51/syntax.html#sec-tokenization
*
* @param {String} html The HTML to parse
* @param {Object} callbacks
* @param {Function} callbacks.onOpenTag Callback function to call when an open
* tag is parsed. Called with the tagName as its argument.
* @param {Function} callbacks.onCloseTag Callback function to call when a close
* tag is parsed. Called with the tagName as its argument. If a self-closing
* tag is found, `onCloseTag` is called immediately after `onOpenTag`.
* @param {Function} callbacks.onText Callback function to call when text (i.e
* not an HTML tag) is parsed. Called with the text (string) as its first
* argument, and offset (number) into the string as its second.
*/
export declare function parseHtml(html: string, { onOpenTag, onCloseTag, onText, onComment, onDoctype, }: {
onOpenTag: (tagName: string, offset: number) => void;
onCloseTag: (tagName: string, offset: number) => void;
onText: (text: string, offset: number) => void;
onComment: (offset: number) => void;
onDoctype: (offset: number) => void;
}): void;
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