build: Add some required modules for node

1 files changed, 209 insertions, 0 deletions

diff --git a/node_modules/fs-extra/lib/copy-sync/copy-sync.js b/node_modules/fs-extra/lib/copy-sync/copy-sync.js
new file mode 100644
index 0000000..c4742db
--- /dev/null
+++ b/node_modules/fs-extra/lib/copy-sync/copy-sync.js
@@ -0,0 +1,209 @@
+'use strict'
+
+const fs = require('graceful-fs')
+const path = require('path')
+const mkdirpSync = require('../mkdirs').mkdirsSync
+const utimesSync = require('../util/utimes.js').utimesMillisSync
+
+const notExist = Symbol('notExist')
+const existsReg = Symbol('existsReg')
+
+function copySync (src, dest, opts) {
+  if (typeof opts === 'function') {
+    opts = {filter: opts}
+  }
+
+  opts = opts || {}
+  opts.clobber = 'clobber' in opts ? !!opts.clobber : true // default to true for now
+  opts.overwrite = 'overwrite' in opts ? !!opts.overwrite : opts.clobber // overwrite falls back to clobber
+
+  // Warn about using preserveTimestamps on 32-bit node
+  if (opts.preserveTimestamps && process.arch === 'ia32') {
+    console.warn(`fs-extra: Using the preserveTimestamps option in 32-bit node is not recommended;\n
+    see https://github.com/jprichardson/node-fs-extra/issues/269`)
+  }
+
+  src = path.resolve(src)
+  dest = path.resolve(dest)
+
+  // don't allow src and dest to be the same
+  if (src === dest) throw new Error('Source and destination must not be the same.')
+
+  if (opts.filter && !opts.filter(src, dest)) return
+
+  const destParent = path.dirname(dest)
+  if (!fs.existsSync(destParent)) mkdirpSync(destParent)
+  return startCopy(src, dest, opts)
+}
+
+function startCopy (src, dest, opts) {
+  if (opts.filter && !opts.filter(src, dest)) return
+  return getStats(src, dest, opts)
+}
+
+function getStats (src, dest, opts) {
+  const statSync = opts.dereference ? fs.statSync : fs.lstatSync
+  const st = statSync(src)
+
+  if (st.isDirectory()) return onDir(st, src, dest, opts)
+  else if (st.isFile() ||
+           st.isCharacterDevice() ||
+           st.isBlockDevice()) return onFile(st, src, dest, opts)
+  else if (st.isSymbolicLink()) return onLink(src, dest, opts)
+}
+
+function onFile (srcStat, src, dest, opts) {
+  const resolvedPath = checkDest(dest)
+  if (resolvedPath === notExist) {
+    return copyFile(srcStat, src, dest, opts)
+  } else if (resolvedPath === existsReg) {
+    return mayCopyFile(srcStat, src, dest, opts)
+  } else {
+    if (src === resolvedPath) return
+    return mayCopyFile(srcStat, src, dest, opts)
+  }
+}
+
+function mayCopyFile (srcStat, src, dest, opts) {
+  if (opts.overwrite) {
+    fs.unlinkSync(dest)
+    return copyFile(srcStat, src, dest, opts)
+  } else if (opts.errorOnExist) {
+    throw new Error(`'${dest}' already exists`)
+  }
+}
+
+function copyFile (srcStat, src, dest, opts) {
+  if (typeof fs.copyFileSync === 'function') {
+    fs.copyFileSync(src, dest)
+    fs.chmodSync(dest, srcStat.mode)
+    if (opts.preserveTimestamps) {
+      return utimesSync(dest, srcStat.atime, srcStat.mtime)
+    }
+    return
+  }
+  return copyFileFallback(srcStat, src, dest, opts)
+}
+
+function copyFileFallback (srcStat, src, dest, opts) {
+  const BUF_LENGTH = 64 * 1024
+  const _buff = require('../util/buffer')(BUF_LENGTH)
+
+  const fdr = fs.openSync(src, 'r')
+  const fdw = fs.openSync(dest, 'w', srcStat.mode)
+  let bytesRead = 1
+  let pos = 0
+
+  while (bytesRead > 0) {
+    bytesRead = fs.readSync(fdr, _buff, 0, BUF_LENGTH, pos)
+    fs.writeSync(fdw, _buff, 0, bytesRead)
+    pos += bytesRead
+  }
+
+  if (opts.preserveTimestamps) fs.futimesSync(fdw, srcStat.atime, srcStat.mtime)
+
+  fs.closeSync(fdr)
+  fs.closeSync(fdw)
+}
+
+function onDir (srcStat, src, dest, opts) {
+  const resolvedPath = checkDest(dest)
+  if (resolvedPath === notExist) {
+    if (isSrcSubdir(src, dest)) {
+      throw new Error(`Cannot copy '${src}' to a subdirectory of itself, '${dest}'.`)
+    }
+    return mkDirAndCopy(srcStat, src, dest, opts)
+  } else if (resolvedPath === existsReg) {
+    if (isSrcSubdir(src, dest)) {
+      throw new Error(`Cannot copy '${src}' to a subdirectory of itself, '${dest}'.`)
+    }
+    return mayCopyDir(src, dest, opts)
+  } else {
+    if (src === resolvedPath) return
+    return copyDir(src, dest, opts)
+  }
+}
+
+function mayCopyDir (src, dest, opts) {
+  if (!fs.statSync(dest).isDirectory()) {
+    throw new Error(`Cannot overwrite non-directory '${dest}' with directory '${src}'.`)
+  }
+  return copyDir(src, dest, opts)
+}
+
+function mkDirAndCopy (srcStat, src, dest, opts) {
+  fs.mkdirSync(dest, srcStat.mode)
+  fs.chmodSync(dest, srcStat.mode)
+  return copyDir(src, dest, opts)
+}
+
+function copyDir (src, dest, opts) {
+  fs.readdirSync(src).forEach(item => {
+    startCopy(path.join(src, item), path.join(dest, item), opts)
+  })
+}
+
+function onLink (src, dest, opts) {
+  let resolvedSrcPath = fs.readlinkSync(src)
+
+  if (opts.dereference) {
+    resolvedSrcPath = path.resolve(process.cwd(), resolvedSrcPath)
+  }
+
+  let resolvedDestPath = checkDest(dest)
+  if (resolvedDestPath === notExist || resolvedDestPath === existsReg) {
+    // if dest already exists, fs throws error anyway,
+    // so no need to guard against it here.
+    return fs.symlinkSync(resolvedSrcPath, dest)
+  } else {
+    if (opts.dereference) {
+      resolvedDestPath = path.resolve(process.cwd(), resolvedDestPath)
+    }
+    if (resolvedDestPath === resolvedSrcPath) return
+
+    // prevent copy if src is a subdir of dest since unlinking
+    // dest in this case would result in removing src contents
+    // and therefore a broken symlink would be created.
+    if (fs.statSync(dest).isDirectory() && isSrcSubdir(resolvedDestPath, resolvedSrcPath)) {
+      throw new Error(`Cannot overwrite '${resolvedDestPath}' with '${resolvedSrcPath}'.`)
+    }
+    return copyLink(resolvedSrcPath, dest)
+  }
+}
+
+function copyLink (resolvedSrcPath, dest) {
+  fs.unlinkSync(dest)
+  return fs.symlinkSync(resolvedSrcPath, dest)
+}
+
+// check if dest exists and/or is a symlink
+function checkDest (dest) {
+  let resolvedPath
+  try {
+    resolvedPath = fs.readlinkSync(dest)
+  } catch (err) {
+    if (err.code === 'ENOENT') return notExist
+
+    // dest exists and is a regular file or directory, Windows may throw UNKNOWN error
+    if (err.code === 'EINVAL' || err.code === 'UNKNOWN') return existsReg
+
+    throw err
+  }
+  return resolvedPath // dest exists and is a symlink
+}
+
+// return true if dest is a subdir of src, otherwise false.
+// extract dest base dir and check if that is the same as src basename
+function isSrcSubdir (src, dest) {
+  const baseDir = dest.split(path.dirname(src) + path.sep)[1]
+  if (baseDir) {
+    const destBasename = baseDir.split(path.sep)[0]
+    if (destBasename) {
+      return src !== dest && dest.indexOf(src) > -1 && destBasename === path.basename(src)
+    }
+    return false
+  }
+  return false
+}
+
+module.exports = copySync