next/dist/esm/lib/error-telemetry-utils.js

The React Framework

const ERROR_CODE_DELIMITER = '@';
/**
 * Augments the digest field of errors thrown in React Server Components (RSC) with an error code.
 * Since RSC errors can only be serialized through the digest field, this provides a way to include
 * an additional error code that can be extracted client-side via `extractNextErrorCode`.
 *
 * The error code is appended to the digest string with a semicolon separator, allowing it to be
 * parsed out later while preserving the original digest value.
 */ export const createDigestWithErrorCode = (thrownValue, originalDigest)=>{
    if (typeof thrownValue === 'object' && thrownValue !== null && '__NEXT_ERROR_CODE' in thrownValue) {
        return `${originalDigest}${ERROR_CODE_DELIMITER}${thrownValue.__NEXT_ERROR_CODE}`;
    }
    return originalDigest;
};
/**
 * Copies the error code from one error to another by setting the __NEXT_ERROR_CODE property.
 * This allows error codes to be preserved when wrapping or transforming errors.
 */ export const copyNextErrorCode = (source, target)=>{
    const errorCode = extractNextErrorCode(source);
    if (errorCode && typeof target === 'object' && target !== null) {
        Object.defineProperty(target, '__NEXT_ERROR_CODE', {
            value: errorCode,
            enumerable: false,
            configurable: true
        });
    }
};
export const extractNextErrorCode = (error)=>{
    if (typeof error === 'object' && error !== null && '__NEXT_ERROR_CODE' in error && typeof error.__NEXT_ERROR_CODE === 'string') {
        return error.__NEXT_ERROR_CODE;
    }
    if (typeof error === 'object' && error !== null && 'digest' in error && typeof error.digest === 'string') {
        const segments = error.digest.split(ERROR_CODE_DELIMITER);
        const errorCode = segments.find((segment)=>segment.startsWith('E'));
        return errorCode;
    }
    return undefined;
};

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