🐛 Update: Added support for the 'find' command in settings.local.json. Enhanced logging for various modules, including initialization and performance metrics. Improved SQLite database optimization and ensured better tracking of user interactions and system processes. 📚

network-visualization/node_modules/event-stream/index.js

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+//filter will reemit the data if cb(err,pass) pass is truthy
+
+// reduce is more tricky
+// maybe we want to group the reductions or emit progress updates occasionally
+// the most basic reduce just emits one 'data' event after it has recieved 'end'
+
+var Stream = require('stream').Stream
+  , es = exports
+  , through = require('through')
+  , from = require('from')
+  , duplex = require('duplexer')
+  , map = require('map-stream')
+  , pause = require('pause-stream')
+  , split = require('split')
+  , pipeline = require('stream-combiner')
+  , immediately = global.setImmediate || process.nextTick;
+
+es.Stream = Stream //re-export Stream from core
+es.through = through
+es.from = from
+es.duplex = duplex
+es.map = map
+es.pause = pause
+es.split = split
+es.pipeline = es.connect = es.pipe = pipeline
+// merge / concat
+//
+// combine multiple streams into a single stream.
+// will emit end only once
+
+es.concat = //actually this should be called concat
+es.merge = function (/*streams...*/) {
+  var toMerge = [].slice.call(arguments)
+  if (toMerge.length === 1 && (toMerge[0] instanceof Array)) {
+    toMerge = toMerge[0] //handle array as arguments object
+  }
+  var stream = new Stream()
+  stream.setMaxListeners(0) // allow adding more than 11 streams
+  var endCount = 0
+  stream.writable = stream.readable = true
+
+  if (toMerge.length) {
+    toMerge.forEach(function (e) {
+      e.pipe(stream, {end: false})
+      var ended = false
+      e.on('end', function () {
+        if(ended) return
+        ended = true
+        endCount ++
+        if(endCount == toMerge.length)
+          stream.emit('end')
+      })
+    })
+  } else {
+    process.nextTick(function () {
+      stream.emit('end')
+    })
+  }
+  
+  stream.write = function (data) {
+    this.emit('data', data)
+  }
+  stream.destroy = function () {
+    toMerge.forEach(function (e) {
+      if(e.destroy) e.destroy()
+    })
+  }
+  return stream
+}
+
+
+// writable stream, collects all events into an array
+// and calls back when 'end' occurs
+// mainly I'm using this to test the other functions
+
+es.writeArray = function (done) {
+  if ('function' !== typeof done)
+    throw new Error('function writeArray (done): done must be function')
+
+  var a = new Stream ()
+    , array = [], isDone = false
+  a.write = function (l) {
+    array.push(l)
+  }
+  a.end = function () {
+    isDone = true
+    done(null, array)
+  }
+  a.writable = true
+  a.readable = false
+  a.destroy = function () {
+    a.writable = a.readable = false
+    if(isDone) return
+    done(new Error('destroyed before end'), array)
+  }
+  return a
+}
+
+//return a Stream that reads the properties of an object
+//respecting pause() and resume()
+
+es.readArray = function (array) {
+  var stream = new Stream()
+    , i = 0
+    , paused = false
+    , ended = false
+
+  stream.readable = true
+  stream.writable = false
+
+  if(!Array.isArray(array))
+    throw new Error('event-stream.read expects an array')
+
+  stream.resume = function () {
+    if(ended) return
+    paused = false
+    var l = array.length
+    while(i < l && !paused && !ended) {
+      stream.emit('data', array[i++])
+    }
+    if(i == l && !ended)
+      ended = true, stream.readable = false, stream.emit('end')
+  }
+  process.nextTick(stream.resume)
+  stream.pause = function () {
+     paused = true
+  }
+  stream.destroy = function () {
+    ended = true
+    stream.emit('close')
+  }
+  return stream
+}
+
+//
+// readable (asyncFunction)
+// return a stream that calls an async function while the stream is not paused.
+//
+// the function must take: (count, callback) {...
+//
+
+es.readable =
+function (func, continueOnError) {
+  var stream = new Stream()
+    , i = 0
+    , paused = false
+    , ended = false
+    , reading = false
+
+  stream.readable = true
+  stream.writable = false
+
+  if('function' !== typeof func)
+    throw new Error('event-stream.readable expects async function')
+
+  stream.on('end', function () { ended = true })
+
+  function get (err, data) {
+
+    if(err) {
+      stream.emit('error', err)
+      if(!continueOnError) stream.emit('end')
+    } else if (arguments.length > 1)
+      stream.emit('data', data)
+
+    immediately(function () {
+      if(ended || paused || reading) return
+      try {
+        reading = true
+        func.call(stream, i++, function () {
+          reading = false
+          get.apply(null, arguments)
+        })
+      } catch (err) {
+        stream.emit('error', err)
+      }
+    })
+  }
+  stream.resume = function () {
+    paused = false
+    get()
+  }
+  process.nextTick(get)
+  stream.pause = function () {
+     paused = true
+  }
+  stream.destroy = function () {
+    stream.emit('end')
+    stream.emit('close')
+    ended = true
+  }
+  return stream
+}
+
+
+//
+// map sync
+//
+
+es.mapSync = function (sync) {
+  return es.through(function write(data) {
+    var mappedData
+    try {
+      mappedData = sync(data)
+    } catch (err) {
+      return this.emit('error', err)
+    }
+    if (mappedData !== undefined)
+      this.emit('data', mappedData)
+  })
+}
+
+//
+// log just print out what is coming through the stream, for debugging
+//
+
+es.log = function (name) {
+  return es.through(function (data) {
+    var args = [].slice.call(arguments)
+    if(name) console.error(name, data)
+    else     console.error(data)
+    this.emit('data', data)
+  })
+}
+
+
+//
+// child -- pipe through a child process
+//
+
+es.child = function (child) {
+
+  return es.duplex(child.stdin, child.stdout)
+
+}
+
+//
+// parse
+//
+// must be used after es.split() to ensure that each chunk represents a line
+// source.pipe(es.split()).pipe(es.parse())
+
+es.parse = function (options) {
+  var emitError = !!(options ? options.error : false)
+  return es.through(function (data) {
+    var obj
+    try {
+      if(data) //ignore empty lines
+        obj = JSON.parse(data.toString())
+    } catch (err) {
+      if (emitError)
+        return this.emit('error', err)
+      return console.error(err, 'attempting to parse:', data)
+    }
+    //ignore lines that where only whitespace.
+    if(obj !== undefined)
+      this.emit('data', obj)
+  })
+}
+//
+// stringify
+//
+
+es.stringify = function () {
+  var Buffer = require('buffer').Buffer
+  return es.mapSync(function (e){
+    return JSON.stringify(Buffer.isBuffer(e) ? e.toString() : e) + '\n'
+  })
+}
+
+//
+// replace a string within a stream.
+//
+// warn: just concatenates the string and then does str.split().join().
+// probably not optimal.
+// for smallish responses, who cares?
+// I need this for shadow-npm so it's only relatively small json files.
+
+es.replace = function (from, to) {
+  return es.pipeline(es.split(from), es.join(to))
+}
+
+//
+// join chunks with a joiner. just like Array#join
+// also accepts a callback that is passed the chunks appended together
+// this is still supported for legacy reasons.
+//
+
+es.join = function (str) {
+
+  //legacy api
+  if('function' === typeof str)
+    return es.wait(str)
+
+  var first = true
+  return es.through(function (data) {
+    if(!first)
+      this.emit('data', str)
+    first = false
+    this.emit('data', data)
+    return true
+  })
+}
+
+
+//
+// wait. callback when 'end' is emitted, with all chunks appended as string.
+//
+
+es.wait = function (callback) {
+  var arr = []
+  return es.through(function (data) { arr.push(data) },
+    function () {
+      var body = Buffer.isBuffer(arr[0]) ? Buffer.concat(arr)
+        : arr.join('')
+      this.emit('data', body)
+      this.emit('end')
+      if(callback) callback(null, body)
+    })
+}
+
+es.pipeable = function () {
+  throw new Error('[EVENT-STREAM] es.pipeable is deprecated')
+}