deprecation-decorators

DTO decorators with deprecation warnings.

Provides an implementation of a dto-decorators flavor that overrides property setters so that deprecated fields produce system warnings.

Usage

Decorate a class with DEPRECATION_DECORATORS (or any composition thereof):

1import { METADATA_DECORATORS } from '@hippo-oss/deprecation-decorators';
2
3const { IsString } = DEPRECATION_DECORATORS;
4
5class Example {
6    @IsString({
7        deprecated: true,
8        optional: true,
9    })
10    name?: string;
11}

At runtime, setting the property name will produce a warning:

1(node:3814) DeprecationWarning: Example.name is deprecated.
2(Use `node --trace-deprecation ...` to show where the warning was created)