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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | 3x 3x 2x 2x 1x | class MyError extends Error { constructor(message) { super(message); this.name = this.constructor.name; } } class ValidationError extends MyError {} class PropertyRequiredError extends ValidationError { constructor(property) { super('No property: ' + property); this.property = property; } } module.exports = { ValidationError, PropertyRequiredError }; |