1.2.0-alpha.2 • Published 5 years ago
amp-toolbox-runtime-version v1.2.0-alpha.2
AMP Runtime Version
Use it to query cdn.ampproject.org
for the current release or canary version of the AMP Runtime. Uses a stale-while-revalidate caching strategy to avoid network requests in the critical path.
You can use the API to re-write AMP runtime URLs to their versioned counter parts to improve browser caching, e.g. to replace:
https://cdn.ampproject.org/v0.css
with:
https://cdn.ampproject.org/rtv/001515617716922/v0.css
Installation
Install via:
npm install amp-toolbox-runtime-version
Usage
Basic usage:
const runtimeVersion = require('amp-toolbox-runtime-version');
// Release version
runtimeVersion.currentVersion().then(version => {
console.log(version);
});
// Canary version
runtimeVersion.currentVersion({canary: true}).then(version => {
console.log(version);
});
// Rewriting cache URLs
const ampRuntimeUrl = 'https://cdn.ampproject.org/v0.js';
const version = await runtimeVersion.currentVersion();
const versionedAmpRuntimeUrl = ampRuntimeUrl.replace(
'https://cdn.ampproject.org/',
'https://cdn.ampproject.org/rtv/' + version + '/'
);
console.log(versionedAmpRuntimeUrl);
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