🚨 fix(lint): AMP validation fails for redirect pages

[chriskyfung]

Description

The AMP validator reports two errors for the redirect pages, like this:

FAIL: <path>\index.html
line 1, col 224: The attribute 'http-equiv' may not appear in tag 'meta'. (see undefined)
line 3, col 385: Custom JavaScript is not allowed. (see https://amp.dev/documentation/guides-and-tutorials/learn/validation-workflow/validation_errors/#custom-javascript-is-not-allowed)

Steps to reproduce

1. Run the AMP validator after building the site files using npm run build
2. Observe the errors in the console output

Expected behavior

The redirect pages should pass the AMP validation without any errors.

Actual behavior

The redirect pages fail the AMP validation with two errors.

Environment

• Ruby: 3.1.2
• Jekyll: 4.2.2
• Jekyll Redirect plugin: 0.16.0
• Gulp: 4.0.2
• AMP Optimizer: @ampproject/[email protected]
• AMP Validator: [email protected]

Potential solution

To solve the AMP validation errors in the redirect template, follow these steps:

• Remove the <meta http-equiv="..."> tag. This tag is not allowed in AMP documents, as it can interfere with the AMP cache and the browser's rendering.
• Replace the <script> tag with an <amp-script> tag. This tag allows you to run custom JavaScript in AMP documents, as long as you follow the amp-script guidelines.
• Validate your AMP page again using Google’s Structured Data Testing Tool or the AMP validator.