Zapier JavaScript code for parsing Dreamwidth RSS into Facebook-friendly form

dw-to-fb.js

var initialHtml = inputData.postHtml;

// These are the RegExp+replacement transformations we are going to do on the HTML:
var transforms = [
  // A DW userhead:
  ["<span style='white-space: nowrap;'><a href='(?:.*?)'><img src='(?:.*?)' alt='(?:.*?)' width='17' height='17' style='(?:.*?)' /></a><a href='https://(?:.*?).dreamwidth.org/'><b>(.*?)</b></a></span>", "@$1"],
  ["<p>(.*?)</p>", "$1"],
  ['<a href="(.*?)">(.*?)</a>', "$2 ($1)"],
  ['<em>(.*?)</em>', "*$1*"],
  ['<strong>(.*?)</strong>', "**$1**"],
  // We simply strip <ul>, and turn <li> into bullets:
  ['<ul>(.*?)</ul>', "$1"],
  ['<li></li>', "* $1"],
  // The dynamic comment-viewing thingy at the bottom doesn't work in Facebook, so just strip it:
  ['<br /><br /><img (?:.*?)/> comments', ""]
];
// Do the transformations. This is ugly and mutable, but we're stuck with vanilla JS:
var curText = initialHtml;
var curExp = new RegExp("");
transforms.forEach(function doOne(transform) {
  curExp = new RegExp(transform[0], "gi");
  curText = curText.replace(curExp, transform[1]);
});

var finalText = curText;
var textToPost =
    "== " + inputData.postTitle + " ==\n\n" +
    finalText + "\n" +
    "Tags: " + inputData.postTags + "\n" +
    "Original post:";
output = [{textToPost: textToPost}];

Updated to make userheads work correctly. Needed a slightly less constrained regexp, and needs to come before we mangle links.