Read Text input .docx .pdf File

I want to read text in .docx .pdf File in JS environment.

but No exist Reading Text Example from input File Object.
Some Other question’s that Reading Text from File on path.

This is my code

// template

<v-file-input @change="uploadFile" />

// script

async uploadFile(file) {
  if (file != null) {
    // Extract file ext
    this.test_file = file;
    const ext = this.test_file.name.substring(this.test_file.name.lastIndexOf('.') + 1, this.test_file.name.length).toLowerCase();

    // Process by ext
    switch (ext) {
      case 'txt':
        let text = await this.test_file.text();
        this.file_text = text;
        break;
      case 'docx':
        // How can I process docx file
        break;
      case 'pdf':
        // How can I process pdf file
        break;
      default:
        break;
    }
  } else {
    this.file_text = '';
  }
}