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/** | |
* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze | |
*/ | |
function deepFreeze<T>(object: T, path?: string): Readonly<T> { | |
const propNames = Object.getOwnPropertyNames(object); | |
let latest; | |
try { | |
for (const name of propNames) { | |
// @ts-ignore - do not verify implementation | |
const value = object[name]; | |
latest = name; | |
// @ts-ignore - do not verify implementation | |
object[name] = value && typeof value === "object" ? deepFreeze(value, path !== undefined ? `${path}/${latest}` : path) : value; | |
} | |
} catch (e) { | |
// ignore if it was freezed before | |
if (path) console.log(`Can't freeze ${path}/${latest}`); | |
} | |
return Object.freeze(object); | |
} |
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