TabWidth from community plugin is ignored

[Janther]

Summary

I'm contributing to a Prettier plugin for Solidity files.
In Solidity the tabWidth is 4 usually. Therefore it's been exported as the default configuration in our plugin.

prettier-atom respects this, however prettier-vscode is ignoring it and we are forced to use a prettier.config.js file for this.

Github Repository to Reproduce Issue

Here is the example repo
https://github.com/Janther/tabWidth

Steps To Reproduce:

1. Have prettier-vscode installed and format on save configured.
2. Install the solidity language
3. Install the npm dependencies to use the solidity plugin.
4. Open the contracts/Migrations.sol file.
5. Save the file.

Expected result

tabWidth should be 4.

Actual result

tabWidth is 2.

Additional information

This is the prettier.config.js file that has the default config for prettier-plugin-solidity.

// https://prettier.io/docs/en/configuration.html
module.exports = {
  // Global configuration
  printWidth: 80,
  tabWidth: 4,
  useTabs: false,
  singleQuote: false,
  // Common configuration
  bracketSpacing: false,
  // Solidity configuration
  explicitTypes: "always"
};

VS Code Version: 1.38.1

Prettier VSCode: 2.2.2

Prettier: 1.18.2

Prettier Plugin Solidity: 1.0.0-alpha.32

OS and version: MacOS 10.14.6

[ntotten]

This should be fixed in version 3.0. Still in preview, but you can test it here: https://marketplace.visualstudio.com/items?itemName=prettier.prettier-vscode

[github-actions]

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