export declare const SLACK_NO_UNFURL: {
    readonly unfurl_links: false;
    readonly unfurl_media: false;
};
export interface SlackMarkdownBlock {
    text: string;
    type: "markdown";
}
export type SlackMessageBlock = SlackMarkdownBlock;
export interface SlackMessageContent {
    blockCount: number;
    blocks: SlackMessageBlock[];
    format: "markdown";
    text: string;
}
export declare function slackMarkdownBlockText(input: string): string;
export declare function slackMessageContentForText(input: string): SlackMessageContent;
export declare function slackBareUrlAutolink(text: string): string;
export declare function slackMarkdownBlockBreaks(text: string): string;
export declare function slackEmphasisFlanking(text: string): string;
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