101 lines
2.7 KiB
TypeScript
101 lines
2.7 KiB
TypeScript
/*
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This file is part of TALER
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(C) 2019 GNUnet e.V.
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TALER is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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* Check if we are running under nodejs.
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*/
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const isNode =
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typeof process !== "undefined" && process.release.name === "node";
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function writeNodeLog(
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message: any,
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tag: string,
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level: string,
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args: any[],
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): void {
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try {
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process.stderr.write(`${new Date().toISOString()} ${tag} ${level} `);
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process.stderr.write(`${message}`);
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if (args.length != 0) {
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process.stderr.write(" ");
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process.stderr.write(JSON.stringify(args, undefined, 2));
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}
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process.stderr.write("\n");
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} catch (e) {
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// This can happen when we're trying to log something that doesn't want to be
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// converted to a string.
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process.stderr.write(`${new Date().toISOString()} (logger) FATAL `);
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if (e instanceof Error) {
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process.stderr.write("failed to write log: ");
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process.stderr.write(e.message);
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}
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process.stderr.write("\n");
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}
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}
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/**
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* Logger that writes to stderr when running under node,
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* and uses the corresponding console.* method to log in the browser.
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*/
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export class Logger {
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constructor(private tag: string) {}
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info(message: string, ...args: any[]): void {
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if (isNode) {
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writeNodeLog(message, this.tag, "INFO", args);
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} else {
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console.info(
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`${new Date().toISOString()} ${this.tag} INFO ` + message,
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...args,
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);
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}
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}
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warn(message: string, ...args: any[]): void {
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if (isNode) {
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writeNodeLog(message, this.tag, "WARN", args);
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} else {
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console.warn(
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`${new Date().toISOString()} ${this.tag} INFO ` + message,
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...args,
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);
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}
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}
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error(message: string, ...args: any[]): void {
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if (isNode) {
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writeNodeLog(message, this.tag, "ERROR", args);
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} else {
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console.info(
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`${new Date().toISOString()} ${this.tag} ERROR ` + message,
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...args,
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);
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}
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}
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trace(message: any, ...args: any[]): void {
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if (isNode) {
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writeNodeLog(message, this.tag, "TRACE", args);
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} else {
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console.info(
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`${new Date().toISOString()} ${this.tag} TRACE ` + message,
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...args,
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);
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}
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}
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}
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