graphql-validity
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Make business logic validation easy on the graphql side without adding any declarations or modifications to the existing graphql schema.
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/*!
* The MIT License (MIT)
*
* Copyright (c) 2017 Vlad Martynenko <vladimir.martynenko.work@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import { uuid } from './uuid';
// Config options for graphql-validity library
export declare type ValidityConfig = {
// Allows to modify graphql error output to not show original error stack to the end user
wrapErrors: boolean;
// Enables profiling data output, to analyze the graphql performance
enableProfiling: boolean;
// Error wrapper function, which will modify error objects output
unhandledErrorWrapper?: (error: Error) => Error;
// Function which will receive output, with profiling information for analysis
profilingResultHandler?: (profilingResult: any) => void;
}
// Type used inside the field wrapper function to store processing information
export declare type FieldValidationObject = {
// name of the field being validated
fieldName: string;
// name of the parent type for the field being validated
parentTypeName?: string;
// validity object used for graphql request to store validation results
validity?: any;
// path inside the AST tree used by graphql engine
astPath?: string;
// profiling start time
pst?: Number;
// validation end time
vet?: Number;
// execution end time
eet?: Number;
}
// Error object, which must path through error masking
export class ValidityError extends Error {
constructor(message: string) {
const resultingMessage = '_Validity_' + message;
super(resultingMessage);
this.name = "ValidityError";
}
}
/**
* Default error wrapper function to hide error info from end users
*
* @param {Error} error - unhandled error object
* @returns {Error} - error object with critical data hidden
*/
export function onUnhandledError(error: Error): Error {
const id = uuid();
console.error(`Unhandled error occured with id:${id}, error:${JSON.stringify(error, null, 2)}`);
return new Error(`An internal error occured, with following id:${id}, please contact Administrator!`)
}</pre></td></tr>
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