69 lines
1.6 KiB
Markdown
69 lines
1.6 KiB
Markdown
# mute-stream
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Bytes go in, but they don't come out (when muted).
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This is a basic pass-through stream, but when muted, the bytes are
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silently dropped, rather than being passed through.
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## Usage
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```javascript
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var MuteStream = require('mute-stream')
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var ms = new MuteStream(options)
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ms.pipe(process.stdout)
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ms.write('foo') // writes 'foo' to stdout
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ms.mute()
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ms.write('bar') // does not write 'bar'
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ms.unmute()
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ms.write('baz') // writes 'baz' to stdout
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// can also be used to mute incoming data
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var ms = new MuteStream
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input.pipe(ms)
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ms.on('data', function (c) {
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console.log('data: ' + c)
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})
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input.emit('data', 'foo') // logs 'foo'
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ms.mute()
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input.emit('data', 'bar') // does not log 'bar'
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ms.unmute()
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input.emit('data', 'baz') // logs 'baz'
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```
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## Options
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All options are optional.
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* `replace` Set to a string to replace each character with the
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specified string when muted. (So you can show `****` instead of the
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password, for example.)
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* `prompt` If you are using a replacement char, and also using a
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prompt with a readline stream (as for a `Password: *****` input),
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then specify what the prompt is so that backspace will work
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properly. Otherwise, pressing backspace will overwrite the prompt
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with the replacement character, which is weird.
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## ms.mute()
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Set `muted` to `true`. Turns `.write()` into a no-op.
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## ms.unmute()
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Set `muted` to `false`
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## ms.isTTY
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True if the pipe destination is a TTY, or if the incoming pipe source is
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a TTY.
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## Other stream methods...
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The other standard readable and writable stream methods are all
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available. The MuteStream object acts as a facade to its pipe source
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and destination.
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