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Troubleshooting

  • If you get TS errors like
node_modules/class-validator/decorator/decorators.d.ts:161:45 - error TS2503: Cannot find namespace 'ValidatorJS'.
161 export declare function IsDecimal(options?: ValidatorJS.IsDecimalOptions, validationOptions?: ValidationOptions): (object: Object, propertyName: string) => void;

(e.g if using sequelize-typescript),
Then this means you are likely experiencing dependency clashes. We recommend using yarn for much improved dependency resolution or, if you must use npm, consider adding the following to your tsconfig.json:

"typeRoots": ["./node_modules/*/node_modules/@types/"]