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class-validator

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Decorator-based property validation for classes.

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import { buildMessage, ValidateBy } from '../common/ValidateBy'; export const ARRAY_UNIQUE = 'arrayUnique'; /** * Checks if all array's values are unique. Comparison for objects is reference-based. * If null or undefined is given then this function returns false. */ export function arrayUnique(array, identifier) { if (!Array.isArray(array)) return false; if (identifier) { array = array.map(o => (o != null ? identifier(o) : o)); } const uniqueItems = array.filter((a, b, c) => c.indexOf(a) === b); return array.length === uniqueItems.length; } /** * Checks if all array's values are unique. Comparison for objects is reference-based. * If null or undefined is given then this function returns false. */ export function ArrayUnique(identifierOrOptions, validationOptions) { const identifier = typeof identifierOrOptions === 'function' ? identifierOrOptions : undefined; const options = typeof identifierOrOptions !== 'function' ? identifierOrOptions : validationOptions; return ValidateBy({ name: ARRAY_UNIQUE, validator: { validate: (value, args) => arrayUnique(value, identifier), defaultMessage: buildMessage(eachPrefix => eachPrefix + "All $property's elements must be unique", options), }, }, options); } //# sourceMappingURL=ArrayUnique.js.map