@metamask/logger/dist/stream.mjs

A lightweight logging package using @metamask/streams

import { split } from "@metamask/streams";
import { isJsonRpcNotification } from "@metamask/utils";
import { TOKEN_UNDEFINED } from "./constants.mjs";
/**
 * Serializes a log entry.
 *
 * @param entry - The log entry to serialize.
 * @returns The serialized log entry.
 */
export const lser = (entry) => JSON.stringify(entry, (_key, value) => value === undefined ? TOKEN_UNDEFINED : value);
harden(lser);
/**
 * Deserializes a log entry.
 *
 * @param serializedEntry - The serialized log entry to deserialize.
 * @returns The deserialized log entry.
 */
export const lunser = (serializedEntry) => JSON.parse(serializedEntry, (_key, value) => value === TOKEN_UNDEFINED ? undefined : value);
harden(lunser);
/**
 * Checks if a message is a logger message.
 *
 * @param message - The message to check.
 * @returns Whether the message is a logger message.
 */
export const isLoggerMessage = (message) => isJsonRpcNotification(message) &&
    Array.isArray(message.params) &&
    message.params.length > 0 &&
    message.params[0] === 'logger' &&
    typeof message.params[1] === 'string';
harden(isLoggerMessage);
/**
 * Checks if a message is a kernel message. A kernel message is any message
 * which is not a logger message.
 *
 * @param message - The message to check.
 * @returns Whether the message is a kernel message.
 */
export const isKernelMessage = (message) => !isLoggerMessage(message);
harden(isKernelMessage);
/**
 * Splits a stream into a kernel stream and a logger stream.
 *
 * @param stream - The stream to split.
 * @returns An object containing the kernel stream and the logger stream.
 */
export const splitLoggerStream = (stream) => {
    const [kernelStream, loggerStream] = split(stream, isKernelMessage, isLoggerMessage);
    return { kernelStream, loggerStream };
};
harden(splitLoggerStream);
//# sourceMappingURL=stream.mjs.map