@giancosta86/typedoc-readonly/dist/declarationUtils.js

Advanced support for Readonly in TypeDoc

import { DeclarationReflection, ReflectionFlag } from "typedoc";
function cloneDeclaration(source) {
    const result = new DeclarationReflection(source.name, source.kind, source.parent);
    for (const [key, value] of Object.entries(source)) {
        result[key] = value;
    }
    return result;
}
export function setPropertiesReadonly(source) {
    const result = cloneDeclaration(source);
    for (const propertyDeclaration of result.getProperties()) {
        propertyDeclaration.setFlag(ReflectionFlag.Readonly, true);
    }
    return result;
}