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instrumental/app/javascript/entrypoints/public-path.ts

24 lines
809 B
TypeScript

// 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: 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<HTMLMetaElement>('meta[name=cdn-host]');
__webpack_public_path__ = formatPublicPath(
cdnHost ? cdnHost.content : '',
process.env.PUBLIC_OUTPUT_PATH,
);