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fizzy/app/javascript/helpers/current_helpers.js
T
2024-10-11 20:14:09 -05:00

26 lines
823 B
JavaScript

// On-demand JavaScript objects from "current" HTML <meta> elements. Example:
//
// <meta name="current-identity-id" content="123">
// <meta name="current-identity-time-zone-name" content="Central Time (US & Canada)">
//
// >> current.identity
// => { id: "123", timeZoneName: "Central Time (US & Canada)" }
//
// >> current.foo
// => {}
export const current = new Proxy({}, {
get(_target, propertyName) {
const result = {}
const prefix = `current-${propertyName}-`
for (const { name, content } of document.head.querySelectorAll(`meta[name^=${prefix}]`)) {
const key = camelize(name.slice(prefix.length))
result[key] = content
}
return result
}
})
function camelize(string) {
return string.replace(/(?:[_-])([a-z0-9])/g, (_, char) => char.toUpperCase())
}