@nestjs/common/utils/parameter-decorator-options.util.js

Nest - modern, fast, powerful node.js web framework (@common)

import { isFunction } from './shared.utils.js';
const isPipeLike = (value) => isFunction(value?.transform) ||
    (isFunction(value) &&
        value.prototype &&
        isFunction(value.prototype.transform));
/**
 * Determines whether a parameter-decorator argument is a
 * `ParameterDecoratorOptions` object rather than a pipe (instance or class).
 *
 * Kept in one place so every decorator (`@Query`, `@Body`, `@Param`,
 * `@RawBody`, `@Payload`, `@MessageBody`, custom decorators, ...) classifies
 * arguments identically: a pipe instance that happens to expose a `schema` or
 * `pipes` property must never be mistaken for an options object.
 *
 * @internal
 */
export function isParameterDecoratorOptions(value) {
    return (!!value &&
        typeof value === 'object' &&
        !isPipeLike(value) &&
        ('schema' in value || 'pipes' in value));
}