Fresh-validation NPM

fresh-validation

keeps your data fresh

Provides validateData(data, Class), which throws a TypeError if the runtime types of any properties annotated with @validate() do not match their Typescript types

Version 3

Version 3 is a complete rewrite in typescript. Use @validate() decorators to automatically tag class members that should be validated at runtime, using reflected type metadata.

Usage

import { validate } from 'fresh-validation';

class A {
   @validate()
   count: number;

   @validate() // deep typechecking on decorated classes
   options: Position;

   @validate() //only validates if add is a function (no parameter checking)
   add: (a: number, b: number) => number;

   @validate(true) // optional
   name?: string;

   @validate(false, string) // array element type must be passed
   names: string[];

   @validate(false, number, true) // array elements may be unefined/null
   sums: number[];
}

class Position {
    @validate()
    x: number;

    @validate()
    y: number;
}

 
const a: A = validateData({
    count: 10,

    }, A);

Uses emitDecoratorMetadata to provide Typescript type information at runtime

Caveats