All files mongoose-problem-plugin.ts

100% Statements 13/13
100% Branches 8/8
100% Functions 3/3
100% Lines 13/13

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60    3x   3x                         3x               2x 1x     1x 1x     1x 2x           1x                   3x     3x       1x    
import { MongoError } from 'mongodb';
import { NextFunction } from 'express';
import { UNPROCESSABLE_ENTITY } from 'http-status-codes';
import { Error, MongooseDocument, Schema } from 'mongoose';
import { ApiProblem, ApiProblemOptionsType } from './api-problem';
 
export type FormattedErrorType = {
  field: string;
  message: string;
};
 
type MongoErrorHandler = (
  err: MongoError,
  doc: MongooseDocument,
  next: NextFunction,
) => void;
 
export function getMongooseErrorHandler(
  options: ApiProblemOptionsType = {},
): MongoErrorHandler {
  function validationErrorHandler(
    err: MongoError,
    doc: MongooseDocument,
    next: NextFunction,
  ): void {
    if (err.name !== 'ValidationError') {
      return next(err);
    }
 
    const typedError: Error.ValidationError = err as any;
    const formattedErrors: FormattedErrorType[] = [];
 
    // For each of the mongo errors, format them
    for (const error in typedError.errors) {
      formattedErrors.push({
        field: typedError.errors[error].path,
        message: typedError.errors[error].message,
      });
    }
 
    next(
      new ApiProblem({
        status: options.status || UNPROCESSABLE_ENTITY,
        title: options.title || 'Validation Failed',
        ...options,
        detail: formattedErrors,
      }),
    );
  }
 
  return validationErrorHandler;
}
 
export function MongooseProblemPlugin(
  schema: Schema,
  options: ApiProblemOptionsType = {},
) {
  schema.post('save', getMongooseErrorHandler(options));
}