md046.js

// @ts-check

"use strict";

const { addErrorDetailIf } = require("../helpers");

const tokenTypeToStyle = {
  "fence": "fenced",
  "code_block": "indented"
};

module.exports = {
  "names": [ "MD046", "code-block-style" ],
  "description": "Code block style",
  "tags": [ "code" ],
  "function": function MD046(params, onError) {
    let expectedStyle = String(params.config.style || "consistent");
    const codeBlocksAndFences = params.tokens.filter(
      (token) => (token.type === "code_block") || (token.type === "fence")
    );
    for (const token of codeBlocksAndFences) {
      const { lineNumber, type } = token;
      if (expectedStyle === "consistent") {
        expectedStyle = tokenTypeToStyle[type];
      }
      addErrorDetailIf(
        onError,
        lineNumber,
        expectedStyle,
        tokenTypeToStyle[type]);
    }
  }
};