slack-message-parser

Parser library for Slack message format.

[Document]

Install

npm i --save slack-message-parser
# yarn add slack-message-parser

Usage

Usage with Typescript (recommended).

import slackMessageParser, { Node, NodeType } from 'slack-message-parser'

const tree = slackMessageParser('Slack *message* ~to~ _parse_')

// tree is:
// {
//   type: NodeType.Root,
//   children: [
//     {
//       type: NodeType.Text,
//       text: "Slack ",
// .     source: "Slack "
//     },
//     {
//       type: NodeType.Bold,
//       children: [
//         {
//           type: NodeType.Text,
//           text: "message"
//         }
//       ],
// .     source: "*message*"
//     },
//     ...
//   ],
//   source: "Slack *message* ~to~ _parse_"
// }

// Write your own!
const toHTML = (node: Node): string => {
  switch (node.type) {
    case NodeType.Root:
      return `<p>${node.children.map(toHTML).join('')}</p>`
    case NodeType.Text:
      return node.text
    case NodeType.Bold:
      return `<strong>${node.children.map(toHTML).join('')}</strong>`
    case NodeType.Italic:
      return `<i>${node.children.map(toHTML).join('')}</i>`
    case NodeType.Strike:
      return `<del>${node.children.map(toHTML).join('')}</del>`
    default:
      // You can use `source` property, which every nodes have, to serialize unknown nodes as-is
      return node.source
  }
}

console.log(toHTML(tree))

// Output:
// '<p>Slack <strong>message</strong> <del>to</del> <i>parse</i></p>'