vite.ts

import path from "pathe";

import invariant from "../invariant";
import { isReactRouterRepo } from "../config/is-react-router-repo";

// eslint-disable-next-line @typescript-eslint/consistent-type-imports
type Vite = typeof import("vite");
let vite: Vite | undefined;

const viteImportSpecifier = isReactRouterRepo()
  ? // Support testing against different versions of Vite by ensuring that Vite
    // is resolved from the current working directory when running within this
    // repo. If we don't do this, Vite will always be imported relative to this
    // file, which means that it will always resolve to Vite 6.
    `file:///${path
      .normalize(
        require.resolve("vite/package.json", { paths: [process.cwd()] })
      )
      .replace("package.json", "dist/node/index.js")}`
  : "vite";

export async function preloadVite(): Promise<void> {
  // Use a dynamic import to force Vite to use the ESM build. If we don't do
  // this, Vite logs CJS deprecation warnings.
  vite = await import(viteImportSpecifier);
}

export function getVite(): Vite {
  invariant(vite, "getVite() called before preloadVite()");
  return vite;
}