/// <reference types="angular-sanitize" />
import { sanitize } from 'angular';
export default class RichTextService {
    private $sanitize;
    constructor($sanitize: sanitize.ISanitizeService);
    /** Older versions of Quill rendered some things differently. Patch those up. */
    backwardsCompatibleHtml(html: string): string;
    /**
     * Transform <ul><li> into <ol><li data-list="bullet">,
     * and <ol><li> into <ol><li data-list="ordered">
     * accounting for any pattern of nested <ul> and <ol> tags.
     */
    fixBulletPoints(html: string): string;
    /**
     * Transform <font> tags from the old Quill editor into <span> tags, as used by the new editor.
     * Quill used to set fonts using <font color="#000000" face="Open Sans">
     * Now it uses <span style="font-family: &#34;Open Sans&#34;; color: rgb(0, 0, 0);">
     * Although the former still renders correctly, it is skipped for editor.getText(), so it might report that the text editor is empty.
     */
    fixFontTags(html: string): string;
    /**
     * Quill adds its own editor cursor to its HTML: <span class="ql-cursor">|</span>
     * These days we remove that on save, but sometimes it's present in the HTML that was saved by an older version of the editor.
     * In rare cases, the HTML wraps that span around actual content. This function fixes that.
     */
    fixWrappingCursor(html: string): string;
    /**
     * To transition to supporting Google font weights, we switched to inline font weights rather than quill's default <strong> tags.
     * Replace the legacy strong's with regular span's and an inline font weight.
     */
    fixStrongBold(html: string): string;
    /** Helper method because regexes can't natively start searching from a given index */
    indexOfRegex(text: string, regex: RegExp, fromIndex: number): number;
    /** Sometimes Quill's HTML includes its own cursor. We don't want to save that. */
    removeCursor(html: string): string;
    /** Sometimes Quill adds Zero Width No-Break Spaces. */
    removeZeroWidthNoBreakSpaces(html: string): string;
    /** Clean up the HTML, ready for save */
    sanitizeHtml(html: string): string;
}