Show results from hover providers incrementally

[alexdima]

When having multiple hover providers, it would be good to render results as soon as possible and not block on waiting for all hover providers. Sample:

• package.json:

{
    "name": "137714",
    "publisher": "alex",
    "version": "0.0.1",
    "engines": {
        "vscode": "^1.22.0"
    },
    "activationEvents": ["*"],
    "main": "main.js"
}

• main.js:

//@ts-check

const vscode = require("vscode");

/**
 *
 * @param {string} message
 * @param {number} timeout
 */
function createProvider(message, timeout) {
  return (
    /**
     * @param {import('vscode').TextDocument} document
     * @param {import('vscode').Position} position
     */
    function provideHover(document, position) {
      return new Promise((resolve, reject) => {
        setTimeout(() => {
          resolve(new vscode.Hover(new vscode.MarkdownString(message)));
        }, timeout);
      });
    }
  );
}

/**
 * @param {string} message
 * @param {number} timeout
 */
function registerProvider(message, timeout) {
  const provideHover = createProvider(message, timeout);
  vscode.languages.registerHoverProvider({ language: 'typescript', }, { provideHover });
}

exports.activate = function (ctx) {
  registerProvider('Slow provider', 5000);
  registerProvider('Fast provider', 1000);
  registerProvider('Very fast provider', 0);
};

[alexdima]

Before	After
Kapture.2021-11-23.at.23.33.03.mp4	Kapture.2021-11-23.at.23.35.00.mp4

[tanhakabir]

Verification steps?