79 lines
2.2 KiB
JavaScript
79 lines
2.2 KiB
JavaScript
// This allows for logging (to a file) from the frontend by creating global logging functions
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// That send ipc calls (from renderer) to the electron main process
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// create global logging functions for the frontend. It sends messages to the main
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// process which then log to file
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const electron = require("electron");
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const _ = require("lodash");
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const ipc = electron.ipcRenderer;
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function log(...args) {
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logAtLevel("info", "INFO ", ...args);
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}
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if (window.console) {
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console._log = console.log;
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console.log = log;
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console._trace = console.trace;
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console._debug = console.debug;
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console._info = console.info;
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console._warn = console.warn;
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console._error = console.error;
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console._fatal = console.error;
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}
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// To avoid [Object object] in our log since console.log handles non-strings
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// smoothly
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function cleanArgsForIPC(args) {
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const str = args.map(item => {
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if (typeof item !== "string") {
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try {
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return JSON.stringify(item);
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} catch (error) {
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return item;
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}
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}
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return item;
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});
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return str.join(" ");
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}
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// Backwards-compatible logging, simple strings and no level (defaulted to INFO)
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function now() {
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const date = new Date();
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return date.toJSON();
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}
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// The Bunyan API: https://github.com/trentm/node-bunyan#log-method-api
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function logAtLevel(level, prefix, ...args) {
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const fn = `_${level}`;
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console[fn](prefix, now(), ...args);
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const logText = cleanArgsForIPC(args);
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ipc.send(`log-${level}`, logText);
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}
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window.log = {
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fatal: _.partial(logAtLevel, "fatal", "FATAL"),
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error: _.partial(logAtLevel, "error", "ERROR"),
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warn: _.partial(logAtLevel, "warn", "WARN "),
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info: _.partial(logAtLevel, "info", "INFO "),
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debug: _.partial(logAtLevel, "debug", "DEBUG"),
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trace: _.partial(logAtLevel, "trace", "TRACE")
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};
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window.onerror = (message, script, line, col, error) => {
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const errorInfo = error && error.stack ? error.stack : JSON.stringify(error);
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window.log.error(`Top-level unhandled error: ${errorInfo}`);
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};
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window.addEventListener("unhandledrejection", rejectionEvent => {
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const error = rejectionEvent.reason;
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const errorInfo = error && error.stack ? error.stack : error;
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window.log.error("Top-level unhandled promise rejection:", errorInfo);
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});
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