* first action! (#1)

node_modules/pacote/tarball.js

@@ -0,0 +1,67 @@
+'use strict'
+
+const BB = require('bluebird')
+
+const fs = require('fs')
+const getStream = require('get-stream')
+const mkdirp = BB.promisify(require('mkdirp'))
+const npa = require('npm-package-arg')
+const optCheck = require('./lib/util/opt-check.js')
+const PassThrough = require('stream').PassThrough
+const path = require('path')
+const rimraf = BB.promisify(require('rimraf'))
+const withTarballStream = require('./lib/with-tarball-stream.js')
+
+module.exports = tarball
+function tarball (spec, opts) {
+  opts = optCheck(opts)
+  spec = npa(spec, opts.where)
+  return withTarballStream(spec, opts, stream => getStream.buffer(stream))
+}
+
+module.exports.stream = tarballStream
+function tarballStream (spec, opts) {
+  opts = optCheck(opts)
+  spec = npa(spec, opts.where)
+  const output = new PassThrough()
+  let hasTouchedOutput = false
+  let lastError = null
+  withTarballStream(spec, opts, stream => {
+    if (hasTouchedOutput && lastError) {
+      throw lastError
+    } else if (hasTouchedOutput) {
+      throw new Error('abort, abort!')
+    } else {
+      return new BB((resolve, reject) => {
+        stream.on('error', reject)
+        output.on('error', reject)
+        output.on('error', () => { hasTouchedOutput = true })
+        output.on('finish', resolve)
+        stream.pipe(output)
+        stream.once('data', () => { hasTouchedOutput = true })
+      }).catch(err => {
+        lastError = err
+        throw err
+      })
+    }
+  })
+    .catch(err => output.emit('error', err))
+  return output
+}
+
+module.exports.toFile = tarballToFile
+function tarballToFile (spec, dest, opts) {
+  opts = optCheck(opts)
+  spec = npa(spec, opts.where)
+  return mkdirp(path.dirname(dest))
+    .then(() => withTarballStream(spec, opts, stream => {
+      return rimraf(dest)
+        .then(() => new BB((resolve, reject) => {
+          const writer = fs.createWriteStream(dest)
+          stream.on('error', reject)
+          writer.on('error', reject)
+          writer.on('close', resolve)
+          stream.pipe(writer)
+        }))
+    }))
+}