String type decorator

| Decorator | Type | Description| | --- | --- | --- | | @IsNullableString | string | null | If want to ignore value ≠= ‘’, @IsNullableString({ blank: true }) | | @IsUndefinableString | string | undefined | If want to ignore value ≠= ‘’, @IsUndefinableString({ blank: true }) | | @IsOptionalString | string | null | undefined | If want to ignore value ≠= ‘’, @IsOptionalString({ blank: true }) | | @IsNotEmptyNumberString | string | Checks a string is a number | | @IsNotEmptyBooleanString | string | Checks a string is a boolean | | @IsNullableNumberString | string | null | Checks a string is a number or null | | @IsNullableBooleanString | string | null | Checks a string is a boolean or null | | @IsUndefinableNumberString | string | undefined | Checks a string is a number or undefined | | @IsUndefinableBooleanString | string | undefined | Checks a string is a boolean or null | | @IsOptionalNumberString | string | null | undefined | Checks a string is a number or null or undefined | | @IsOptionalBooleanString | string | null | undefined | Checks a string is a boolean or null or undefined |

Number type decorator

| Decorator | Type | |----------------------|--------| | @IsNotEmptyNumber | number | | @IsNullableNumber | nubmer | null | | @IsUndefinableNumber | number | undefined | | @IsOptionalNumber | number | null | undefined | | | |

Boolean type decorator

| Decorator | Type | | --- | --- | | @IsNotEmptyBoolean | boolean | | @IsNullableBoolean | boolean | null | | @IsUndefinalbeBoolean | boolean | undefined | | @IsOptionalBoolean | boolean | null | undefined |

ValidateNested usage case

import { isNotEmptyString, IsNotEmptyBoolean, isNullable, IsUndefinable } from 'custom-class-validator-tools';
import { IsInstance, ArrayNotEmpty, ValidateNested } from 'class-validator';
import { Type } from 'class-transformer';

class Tag {
  @IsNotEmptyString()
  tag1: string;
  @IsNotEmptyString()
  tag2: string;
}

class Result {
  @IsNotEmptyBoolean()
  failed: boolean;
}

class Post {
  @IsNullable()
  @ArrayNotEmpty()
  @IsInstance(Tag, { each: true })
  @ValidateNested({ each: true })
  @Type(() => Tag)
  tags: Tag[] | null;

  @IsUndefinable()
  @IsInstance(Result)
  @ValidateNested()
  @Type(() => Result)
  result?: Result;
}