gatsby-remark-prismjs/command-line.js

Adds syntax highlighting to code blocks at build time using PrismJS

"use strict";

module.exports = (code = [], highlightLines = [], user = `root`, host = `localhost`) => {
  const generatePrompts = numberOfLines => {
    let prompts = ``;
    for (let i = 0; i < numberOfLines; i++) {
      if (highlightLines.includes(i + 1)) {
        prompts += `<span></span>`;
      } else {
        prompts += `<span data-user=${user} data-host=${host}></span>`;
      }
    }
    return prompts;
  };
  const numberOfLines = code.length === 0 ? 0 : code.split(`\n`).length;
  const promptsWrapper = `<span class="command-line-prompt">` + `${generatePrompts(numberOfLines)}` + `</span>`;
  return promptsWrapper;
};