Query AMP HTML ⚡ Validator JSON rules

amp-validator-query.js

// Copyright 2019 Google LLC.
// SPDX-License-Identifier: Apache-2.0

/**
 * This example demonstrates how to query the AMP validator rules hosted on the
 * AMP CDN.
 *
 * It lists all tags allowed in the AMP4EMAIL spec.
 */

async function fetchValidatorRules() {
  const VALIDATOR_RULES_URL = 'https://cdn.ampproject.org/v0/validator.json';

  const req = await fetch(VALIDATOR_RULES_URL);
  return req.json();
}

const rules = await fetchValidatorRules();

const emailTags = rules.tags.filter(t => t.htmlFormat.includes('AMP4EMAIL'));
const emailTagNames = new Set(emailTags.map(t => t.tagName));
for (const tag of emailTagNames) {
  console.log(tag);
}