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Issue 873: doc update for global output streams #942

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Issue 873: doc update for global output streams #942

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21 changes: 12 additions & 9 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -249,28 +249,31 @@ In Chromium-based web browsers (e.g. Brave, Chrome, and Electron), the JavaScrip

By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method:

Example [_stdout.js_](./examples/node/stdout.js):

```js
var debug = require('debug');
var error = debug('app:error');

// by default stderr is used
error('goes to stderr!');

var log = debug('app:log');
// set this namespace to log via console.log
log.log = console.log.bind(console); // don't forget to bind to console!
log('goes to stdout');
var log1 = debug('app:log1');
var log2 = debug('app:log2');

// set this namespace to log1 via console.log
log1.log = console.log.bind(console); // don't forget to bind to console!
log1('goes to stdout');
error('still goes to stderr!');

// set all output to go via console.info
// overrides all per-namespace log settings
// set default output to go via console.info
// overrides all unconfigured per-namespace log settings
debug.log = console.info.bind(console);
error('now goes to stdout via console.info');
log('still goes to stdout, but via console.info now');
log1('still goes to stdout');
log2('still goes to stdout, but via console.info now');
```

Note: overriding the `debug` instance log will not apply to a namespace that already has a defined output stream.

## Extend
You can simply extend debugger
```js
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