README

regex-empty-conditional-comments

Regular expression for matching HTML empty conditional comments

Install

The latest version is ESM only: Node 12+ is needed to use it and it must be imported instead of required. If your project is not on ESM yet and you want to use require, use an older version of this program, 1.11.0.

npm i regex-empty-conditional-comments

Quick Take

import { strict as assert } from "assert";

import { emptyCondCommentRegex } from "regex-empty-conditional-comments";

// empty comment which was meant to target Outlook-only
assert.equal(
  emptyCondCommentRegex().test(`<!--[if !mso]>
<![endif]-->`),
  true
);

// empty comment which was meant to target non-Outlook-only
assert.equal(
  emptyCondCommentRegex().test(`<!--[if !mso]><!-- -->
<!--<![endif]-->`),
  true
);

assert.equal(
  emptyCondCommentRegex().test(`<!--[if !mso]><!-- -->
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<!--<![endif]-->`),
  false
);

assert.equal(
  emptyCondCommentRegex().test(`<!--[if gte mso 9]><xml>
<o:OfficeDocumentSettings>
<o:AllowPNG/>
<o:PixelsPerInch>96</o:PixelsPerInch>
</o:OfficeDocumentSettings>
</xml><![endif]-->`),
  false
);

assert.equal(
  emptyCondCommentRegex().exec("<html><!--[if !mso]><![endif]--><title>")[0],
  "<!--[if !mso]><![endif]-->"
);

assert.deepEqual(
  `<html> <!--[if !mso]><![endif]--> <title>text</title> <!--[if gte mso 9]>
<xml>
<![endif]-->`.match(emptyCondCommentRegex()),
  ["<!--[if !mso]><![endif]-->"]
);

Documentation

Please visit codsen.com for a full description of the API.

Contributing

To report bugs or request features or assistance, raise an issue on GitHub.

Licence

MIT License

codsen

Usage no npm install needed!