Method addFile

tools/isobuild/import-scanner.ts:434–469

(absPath: string, file: File)

  }

  private addFile(absPath: string, file: File): File | null {
    if (! file || file[fakeSymbol]) {
      // Return file without adding it to this.outputFiles.
      return file;
    }

    const absLowerPath = absPath.toLowerCase();

    if (has(this.absPathToOutputIndex, absLowerPath)) {
      const old = this.outputFiles[
        this.absPathToOutputIndex[absLowerPath]];

      // If the old file is just an empty stub, let the new file take
      // precedence over it.
      if (old.implicit === true) {
        return Object.assign(old, {
          implicit: file.implicit || false
        }, file);
      }

      // If the new file is just an empty stub, pretend the _addFile
      // succeeded by returning the old file, so that we won't try to call
      // _combineFiles needlessly.
      if (file.implicit === true) {
        return old;
      }

    } else {
      this.absPathToOutputIndex[absLowerPath] =
        this.outputFiles.push(file) - 1;

      return file;
    }

    return null;
  }

  addInputFiles(files: File[]) {
    files.forEach(file => {