regex-empty-conditional-comments
Advanced tools
Regular expression for matching HTML empty conditional comments
Regular expression for matching HTML empty conditional comments
This package is pure ESM. If you're not ready yet, install an older version of this program, 1.11.0 (npm i regex-empty-conditional-comments@1.11.0).
npm i regex-empty-conditional-comments
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]-->"],
);
Please visit codsen.com for a full description of the API. If you’re looking for the Changelog, it’s here.
To report bugs or request features or assistance, raise an issue on GitHub.
MIT License
Copyright © 2010-2025 Roy Revelt and other contributors
FAQs
Regular expression for matching HTML empty conditional comments
The npm package regex-empty-conditional-comments receives a total of 21,687 weekly downloads. As such, regex-empty-conditional-comments popularity was classified as popular.
We found that regex-empty-conditional-comments demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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