@azure-tools/typespec-azure-resource-manager/dist/src/utils.js

TypeSpec Azure Resource Manager library

import { getLifecycleVisibilityEnum, getVisibilityForClass, } from "@typespec/compiler";
/**
 * Determines if a property is read-only, which is defined as having the
 * only the `Lifecycle.Read` modifier.
 *
 * If there is more than one Lifecycle visibility modifier active on the property,
 * then the property is not read-only. For example, `@visibility(Lifecycle.Read, Lifecycle.Update)`
 * does not designate a read-only property.
 */
export function isReadonlyProperty(program, property) {
    const Lifecycle = getLifecycleVisibilityEnum(program);
    const visibility = getVisibilityForClass(program, property, getLifecycleVisibilityEnum(program));
    // note: multiple visibilities that include read are not handled using
    // readonly: true, but using separate schemas.
    return visibility.size === 1 && visibility.has(Lifecycle.members.get("Read"));
}
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