@opentelemetry/core/dist/common/logging-error-handler.mjs

OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.

import { diag } from "@opentelemetry/api";
//#region src/common/logging-error-handler.ts
/**
* Returns a function that logs an error using the provided logger, or a
* console logger if one was not provided.
*/
function loggingErrorHandler() {
	return (ex) => {
		diag.error(stringifyException(ex));
	};
}
/**
* Converts an exception into a string representation
* @param {Exception} ex
*/
function stringifyException(ex) {
	if (typeof ex === "string") return ex;
	else return JSON.stringify(flattenException(ex));
}
/**
* Flattens an exception into key-value pairs by traversing the prototype chain
* and coercing values to strings. Duplicate properties will not be overwritten;
* the first insert wins.
*/
function flattenException(ex) {
	const result = {};
	let current = ex;
	while (current !== null) {
		Object.getOwnPropertyNames(current).forEach((propertyName) => {
			if (result[propertyName]) return;
			const value = current[propertyName];
			if (value) result[propertyName] = String(value);
		});
		current = Object.getPrototypeOf(current);
	}
	return result;
}
//#endregion
export { loggingErrorHandler };

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