_resolveEnt()

in packages/metro-memory-fs/src/index.js [1337:1379]

• 43 lines of code
• 13 McCabe index (conditional complexity)

  _resolveEnt(context, filePath, entName) {
    const {node} = context;
    if (node == null) {
      throw makeError('ENOENT', filePath, 'no such file or directory');
    }
    if (node.type !== 'directory') {
      throw makeError('ENOTDIR', filePath, 'not a directory');
    }
    const {entries} = node;
    if (entName === '' || entName === '.') {
      return;
    }
    if (entName === '..') {
      const {nodePath} = context;
      if (nodePath.length > 1) {
        nodePath.pop();
        context.node = nodePath[nodePath.length - 1][1];
      }
      return;
    }
    const childNode = entries.get(entName);
    if (
      childNode == null ||
      childNode.type !== 'symbolicLink' ||
      (context.keepFinalSymlink && context.entNames.length === 0)
    ) {
      context.node = childNode;
      context.nodePath.push([entName, childNode]);
      return;
    }
    if (context.symlinkCount >= 10) {
      throw makeError('ELOOP', filePath, 'too many levels of symbolic links');
    }
    const {entNames, drive} = this._parsePath(childNode.target);
    if (drive != null) {
      context.drive = drive;
      context.node = this._getRoot(drive, filePath);
      context.nodePath = [['', context.node]];
    }
    context.entNames = entNames.concat(context.entNames);
    checkPathLength(context.entNames, filePath);
    ++context.symlinkCount;
  }