Fork stream based on passed condition, and collect down-stream
A ternary stream: conditionally control the flow of stream data
1: Conditionally filter content
if the condition returns truthy, data is piped to the child stream
var ternaryStream = require'ternary-stream';varreturn true;;processstdinpipeternaryStreamcondition processstdoutpipefscreateWriteStream'./out.txt';;
Data will conditionally go to stdout, and always go to the file
2: Ternary stream
var ternaryStream = require'ternary-stream';var through2 = require'through2';var count = 0;varcount++;return count % 2;;processstdinpipeternaryStreamcondition fscreateWriteStream'./truthy.txt' fscreateWriteStream'./falsey.txt'pipeprocessstdout;;
Data will either go to truthy.txt (if condition is true) or falsey.txt (if condition is false) and will always go to stdout
ternary-stream will pipe data to
condition is truthy.
condition is falsey and
elseStream is passed, data will pipe to
After data is piped to
elseStream or neither, data is piped down-stream.
function: takes in stream data and returns
return true; // or false
Stream for ternary-stream to pipe data into when condition is truthy.
Optional, Stream for ternary-stream to pipe data into when condition is falsey.
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