workers-loki-logger/build/error-formatter.js

A Logger for the Cloudflare workers environment that sends the logs to grafana loki

import { isNotNullOrUndefined, isNullOrUndefined } from './lib.js';
export function formatErrorToString(error) {
    if (isNullOrUndefined(error)) {
        return 'error=' + error;
    }
    let errorMessage = 'error=';
    if (isNotNullOrUndefined(error.message)) {
        errorMessage += error.message;
    }
    else if (error instanceof Map) {
        errorMessage += stringifyNoThrow(Object.fromEntries(error));
    }
    else if (error instanceof Set) {
        errorMessage += stringifyNoThrow(Array.from(error));
    }
    else if (typeof error === 'object') {
        errorMessage += stringifyNoThrow(error);
    }
    else {
        errorMessage += error;
    }
    errorMessage += ', type=' + error.constructor.name;
    if (isNotNullOrUndefined(error.stack)) {
        errorMessage += ', stack=' + error.stack;
    }
    return errorMessage;
}
function stringifyNoThrow(object) {
    try {
        return JSON.stringify(object);
    }
    catch (e) {
        return 'Converting circular structure: ' + object;
    }
}
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