Tracking de l'application VApp (IHM du jeu)

VApp/node_modules/readable-stream/lib/internal/streams/pipeline.js

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+/* replacement start */
+
+const process = require('process/')
+
+/* replacement end */
+// Ported from https://github.com/mafintosh/pump with
+// permission from the author, Mathias Buus (@mafintosh).
+
+;('use strict')
+const { ArrayIsArray, Promise, SymbolAsyncIterator, SymbolDispose } = require('../../ours/primordials')
+const eos = require('./end-of-stream')
+const { once } = require('../../ours/util')
+const destroyImpl = require('./destroy')
+const Duplex = require('./duplex')
+const {
+  aggregateTwoErrors,
+  codes: {
+    ERR_INVALID_ARG_TYPE,
+    ERR_INVALID_RETURN_VALUE,
+    ERR_MISSING_ARGS,
+    ERR_STREAM_DESTROYED,
+    ERR_STREAM_PREMATURE_CLOSE
+  },
+  AbortError
+} = require('../../ours/errors')
+const { validateFunction, validateAbortSignal } = require('../validators')
+const {
+  isIterable,
+  isReadable,
+  isReadableNodeStream,
+  isNodeStream,
+  isTransformStream,
+  isWebStream,
+  isReadableStream,
+  isReadableFinished
+} = require('./utils')
+const AbortController = globalThis.AbortController || require('abort-controller').AbortController
+let PassThrough
+let Readable
+let addAbortListener
+function destroyer(stream, reading, writing) {
+  let finished = false
+  stream.on('close', () => {
+    finished = true
+  })
+  const cleanup = eos(
+    stream,
+    {
+      readable: reading,
+      writable: writing
+    },
+    (err) => {
+      finished = !err
+    }
+  )
+  return {
+    destroy: (err) => {
+      if (finished) return
+      finished = true
+      destroyImpl.destroyer(stream, err || new ERR_STREAM_DESTROYED('pipe'))
+    },
+    cleanup
+  }
+}
+function popCallback(streams) {
+  // Streams should never be an empty array. It should always contain at least
+  // a single stream. Therefore optimize for the average case instead of
+  // checking for length === 0 as well.
+  validateFunction(streams[streams.length - 1], 'streams[stream.length - 1]')
+  return streams.pop()
+}
+function makeAsyncIterable(val) {
+  if (isIterable(val)) {
+    return val
+  } else if (isReadableNodeStream(val)) {
+    // Legacy streams are not Iterable.
+    return fromReadable(val)
+  }
+  throw new ERR_INVALID_ARG_TYPE('val', ['Readable', 'Iterable', 'AsyncIterable'], val)
+}
+async function* fromReadable(val) {
+  if (!Readable) {
+    Readable = require('./readable')
+  }
+  yield* Readable.prototype[SymbolAsyncIterator].call(val)
+}
+async function pumpToNode(iterable, writable, finish, { end }) {
+  let error
+  let onresolve = null
+  const resume = (err) => {
+    if (err) {
+      error = err
+    }
+    if (onresolve) {
+      const callback = onresolve
+      onresolve = null
+      callback()
+    }
+  }
+  const wait = () =>
+    new Promise((resolve, reject) => {
+      if (error) {
+        reject(error)
+      } else {
+        onresolve = () => {
+          if (error) {
+            reject(error)
+          } else {
+            resolve()
+          }
+        }
+      }
+    })
+  writable.on('drain', resume)
+  const cleanup = eos(
+    writable,
+    {
+      readable: false
+    },
+    resume
+  )
+  try {
+    if (writable.writableNeedDrain) {
+      await wait()
+    }
+    for await (const chunk of iterable) {
+      if (!writable.write(chunk)) {
+        await wait()
+      }
+    }
+    if (end) {
+      writable.end()
+      await wait()
+    }
+    finish()
+  } catch (err) {
+    finish(error !== err ? aggregateTwoErrors(error, err) : err)
+  } finally {
+    cleanup()
+    writable.off('drain', resume)
+  }
+}
+async function pumpToWeb(readable, writable, finish, { end }) {
+  if (isTransformStream(writable)) {
+    writable = writable.writable
+  }
+  // https://streams.spec.whatwg.org/#example-manual-write-with-backpressure
+  const writer = writable.getWriter()
+  try {
+    for await (const chunk of readable) {
+      await writer.ready
+      writer.write(chunk).catch(() => {})
+    }
+    await writer.ready
+    if (end) {
+      await writer.close()
+    }
+    finish()
+  } catch (err) {
+    try {
+      await writer.abort(err)
+      finish(err)
+    } catch (err) {
+      finish(err)
+    }
+  }
+}
+function pipeline(...streams) {
+  return pipelineImpl(streams, once(popCallback(streams)))
+}
+function pipelineImpl(streams, callback, opts) {
+  if (streams.length === 1 && ArrayIsArray(streams[0])) {
+    streams = streams[0]
+  }
+  if (streams.length < 2) {
+    throw new ERR_MISSING_ARGS('streams')
+  }
+  const ac = new AbortController()
+  const signal = ac.signal
+  const outerSignal = opts === null || opts === undefined ? undefined : opts.signal
+
+  // Need to cleanup event listeners if last stream is readable
+  // https://github.com/nodejs/node/issues/35452
+  const lastStreamCleanup = []
+  validateAbortSignal(outerSignal, 'options.signal')
+  function abort() {
+    finishImpl(new AbortError())
+  }
+  addAbortListener = addAbortListener || require('../../ours/util').addAbortListener
+  let disposable
+  if (outerSignal) {
+    disposable = addAbortListener(outerSignal, abort)
+  }
+  let error
+  let value
+  const destroys = []
+  let finishCount = 0
+  function finish(err) {
+    finishImpl(err, --finishCount === 0)
+  }
+  function finishImpl(err, final) {
+    var _disposable
+    if (err && (!error || error.code === 'ERR_STREAM_PREMATURE_CLOSE')) {
+      error = err
+    }
+    if (!error && !final) {
+      return
+    }
+    while (destroys.length) {
+      destroys.shift()(error)
+    }
+    ;(_disposable = disposable) === null || _disposable === undefined ? undefined : _disposable[SymbolDispose]()
+    ac.abort()
+    if (final) {
+      if (!error) {
+        lastStreamCleanup.forEach((fn) => fn())
+      }
+      process.nextTick(callback, error, value)
+    }
+  }
+  let ret
+  for (let i = 0; i < streams.length; i++) {
+    const stream = streams[i]
+    const reading = i < streams.length - 1
+    const writing = i > 0
+    const end = reading || (opts === null || opts === undefined ? undefined : opts.end) !== false
+    const isLastStream = i === streams.length - 1
+    if (isNodeStream(stream)) {
+      if (end) {
+        const { destroy, cleanup } = destroyer(stream, reading, writing)
+        destroys.push(destroy)
+        if (isReadable(stream) && isLastStream) {
+          lastStreamCleanup.push(cleanup)
+        }
+      }
+
+      // Catch stream errors that occur after pipe/pump has completed.
+      function onError(err) {
+        if (err && err.name !== 'AbortError' && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') {
+          finish(err)
+        }
+      }
+      stream.on('error', onError)
+      if (isReadable(stream) && isLastStream) {
+        lastStreamCleanup.push(() => {
+          stream.removeListener('error', onError)
+        })
+      }
+    }
+    if (i === 0) {
+      if (typeof stream === 'function') {
+        ret = stream({
+          signal
+        })
+        if (!isIterable(ret)) {
+          throw new ERR_INVALID_RETURN_VALUE('Iterable, AsyncIterable or Stream', 'source', ret)
+        }
+      } else if (isIterable(stream) || isReadableNodeStream(stream) || isTransformStream(stream)) {
+        ret = stream
+      } else {
+        ret = Duplex.from(stream)
+      }
+    } else if (typeof stream === 'function') {
+      if (isTransformStream(ret)) {
+        var _ret
+        ret = makeAsyncIterable((_ret = ret) === null || _ret === undefined ? undefined : _ret.readable)
+      } else {
+        ret = makeAsyncIterable(ret)
+      }
+      ret = stream(ret, {
+        signal
+      })
+      if (reading) {
+        if (!isIterable(ret, true)) {
+          throw new ERR_INVALID_RETURN_VALUE('AsyncIterable', `transform[${i - 1}]`, ret)
+        }
+      } else {
+        var _ret2
+        if (!PassThrough) {
+          PassThrough = require('./passthrough')
+        }
+
+        // If the last argument to pipeline is not a stream
+        // we must create a proxy stream so that pipeline(...)
+        // always returns a stream which can be further
+        // composed through `.pipe(stream)`.
+
+        const pt = new PassThrough({
+          objectMode: true
+        })
+
+        // Handle Promises/A+ spec, `then` could be a getter that throws on
+        // second use.
+        const then = (_ret2 = ret) === null || _ret2 === undefined ? undefined : _ret2.then
+        if (typeof then === 'function') {
+          finishCount++
+          then.call(
+            ret,
+            (val) => {
+              value = val
+              if (val != null) {
+                pt.write(val)
+              }
+              if (end) {
+                pt.end()
+              }
+              process.nextTick(finish)
+            },
+            (err) => {
+              pt.destroy(err)
+              process.nextTick(finish, err)
+            }
+          )
+        } else if (isIterable(ret, true)) {
+          finishCount++
+          pumpToNode(ret, pt, finish, {
+            end
+          })
+        } else if (isReadableStream(ret) || isTransformStream(ret)) {
+          const toRead = ret.readable || ret
+          finishCount++
+          pumpToNode(toRead, pt, finish, {
+            end
+          })
+        } else {
+          throw new ERR_INVALID_RETURN_VALUE('AsyncIterable or Promise', 'destination', ret)
+        }
+        ret = pt
+        const { destroy, cleanup } = destroyer(ret, false, true)
+        destroys.push(destroy)
+        if (isLastStream) {
+          lastStreamCleanup.push(cleanup)
+        }
+      }
+    } else if (isNodeStream(stream)) {
+      if (isReadableNodeStream(ret)) {
+        finishCount += 2
+        const cleanup = pipe(ret, stream, finish, {
+          end
+        })
+        if (isReadable(stream) && isLastStream) {
+          lastStreamCleanup.push(cleanup)
+        }
+      } else if (isTransformStream(ret) || isReadableStream(ret)) {
+        const toRead = ret.readable || ret
+        finishCount++
+        pumpToNode(toRead, stream, finish, {
+          end
+        })
+      } else if (isIterable(ret)) {
+        finishCount++
+        pumpToNode(ret, stream, finish, {
+          end
+        })
+      } else {
+        throw new ERR_INVALID_ARG_TYPE(
+          'val',
+          ['Readable', 'Iterable', 'AsyncIterable', 'ReadableStream', 'TransformStream'],
+          ret
+        )
+      }
+      ret = stream
+    } else if (isWebStream(stream)) {
+      if (isReadableNodeStream(ret)) {
+        finishCount++
+        pumpToWeb(makeAsyncIterable(ret), stream, finish, {
+          end
+        })
+      } else if (isReadableStream(ret) || isIterable(ret)) {
+        finishCount++
+        pumpToWeb(ret, stream, finish, {
+          end
+        })
+      } else if (isTransformStream(ret)) {
+        finishCount++
+        pumpToWeb(ret.readable, stream, finish, {
+          end
+        })
+      } else {
+        throw new ERR_INVALID_ARG_TYPE(
+          'val',
+          ['Readable', 'Iterable', 'AsyncIterable', 'ReadableStream', 'TransformStream'],
+          ret
+        )
+      }
+      ret = stream
+    } else {
+      ret = Duplex.from(stream)
+    }
+  }
+  if (
+    (signal !== null && signal !== undefined && signal.aborted) ||
+    (outerSignal !== null && outerSignal !== undefined && outerSignal.aborted)
+  ) {
+    process.nextTick(abort)
+  }
+  return ret
+}
+function pipe(src, dst, finish, { end }) {
+  let ended = false
+  dst.on('close', () => {
+    if (!ended) {
+      // Finish if the destination closes before the source has completed.
+      finish(new ERR_STREAM_PREMATURE_CLOSE())
+    }
+  })
+  src.pipe(dst, {
+    end: false
+  }) // If end is true we already will have a listener to end dst.
+
+  if (end) {
+    // Compat. Before node v10.12.0 stdio used to throw an error so
+    // pipe() did/does not end() stdio destinations.
+    // Now they allow it but "secretly" don't close the underlying fd.
+
+    function endFn() {
+      ended = true
+      dst.end()
+    }
+    if (isReadableFinished(src)) {
+      // End the destination if the source has already ended.
+      process.nextTick(endFn)
+    } else {
+      src.once('end', endFn)
+    }
+  } else {
+    finish()
+  }
+  eos(
+    src,
+    {
+      readable: true,
+      writable: false
+    },
+    (err) => {
+      const rState = src._readableState
+      if (
+        err &&
+        err.code === 'ERR_STREAM_PREMATURE_CLOSE' &&
+        rState &&
+        rState.ended &&
+        !rState.errored &&
+        !rState.errorEmitted
+      ) {
+        // Some readable streams will emit 'close' before 'end'. However, since
+        // this is on the readable side 'end' should still be emitted if the
+        // stream has been ended and no error emitted. This should be allowed in
+        // favor of backwards compatibility. Since the stream is piped to a
+        // destination this should not result in any observable difference.
+        // We don't need to check if this is a writable premature close since
+        // eos will only fail with premature close on the reading side for
+        // duplex streams.
+        src.once('end', finish).once('error', finish)
+      } else {
+        finish(err)
+      }
+    }
+  )
+  return eos(
+    dst,
+    {
+      readable: false,
+      writable: true
+    },
+    finish
+  )
+}
+module.exports = {
+  pipelineImpl,
+  pipeline
+}