Package specific logger configuration

Several packages include support for a lightweight, configurable logging mechanism based on the ILogger interface in the @thi.ng/logger package. By default these are merely using a dummy implementation (aka NULL_LOGGER), which is not producing any outputs.

Configuration

The snippet below shows how to configure the logger for the @thi.ng/webgl package to use a ConsoleLogger (aka console.log)...

import { ConsoleLogger, LogLevel } from "@thi.ng/logger";
import { setLogger } from "@thi.ng/webgl";

setLogger(new ConsoleLogger("webgl", LogLevel.DEBUG));

Since the mechanism is interface based, other implementations can be used. For more advanced logging setups, check out the logger provided by the @thi.ng/rstream-log package, which supports:

• nested/chained loggers
• structured log messages
• transducer based transformations of log messages
• multiple output targets (incl. support for workers and file output)

import { LogLevel } from "@thi.ng/logger";
import { Logger, formatString, writeConsole } from "@thi.ng/rstream-log";
import { setLogger } from "@thi.ng/webgl";

const logger = new Logger("webgl", LogLevel.DEBUG);
logger.subscribe(writeConsole(), formatString());
setLogger(logger);

Supported packages

The following packages all support the above-mentioned pattern, each using their own, package specific setLogger() implementation...

• defmulti
• ecs
• egf
• hdom
• interceptors
• pointfree-lang
• rstream
• rstream-csp
• rstream-query
• shader-ast
• system
• testament
• vector-pools
• webgl