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Change how CDN_HOST is passed down to make assets build reproducible (#14381)

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* Change how CDN_HOST is passed down to make assets build reproducible

* Change webpacker/webpack configuration to dynamically load publicPath based on meta header

* Fix embedded layout missing the cdn-host meta header
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ThibG 2020-10-13 01:19:35 +02:00 • committed by GitHub
parent 53b22d247f
commit 4c45b43cb8
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GPG key ID: 4AEE18F83AFDEB23
16 changed files with 46 additions and 24 deletions
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21
app/javascript/packs/public-path.js Normal file
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@ -0,0 +1,21 @@
// Dynamically set webpack's loading path depending on a meta header, in order
// to share the same assets regardless of instance configuration.
// See https://webpack.js.org/guides/public-path/#on-the-fly
function removeOuterSlashes(string) {
return string.replace(/^\/*/, '').replace(/\/*$/, '');
}
function formatPublicPath(host = '', path = '') {
let formattedHost = removeOuterSlashes(host);
if (formattedHost && !/^http/i.test(formattedHost)) {
formattedHost = `//${formattedHost}`;
}
const formattedPath = removeOuterSlashes(path);
return `${formattedHost}/${formattedPath}/`;
}
const cdnHost = document.querySelector('meta[name=cdn-host]');
// eslint-disable-next-line camelcase, no-undef, no-unused-vars
__webpack_public_path__ = formatPublicPath(cdnHost ? cdnHost.content : '', process.env.PUBLIC_OUTPUT_PATH);