Function updatePackageJSON

packages/create-react-router/index.ts:628–691

(ctx: Context)

}

async function updatePackageJSON(ctx: Context) {
  let packageJSONPath = path.join(ctx.cwd, "package.json");
  if (!existsSync(packageJSONPath)) {
    let relativePath = path.relative(process.cwd(), ctx.cwd);
    error(
      "Oh no!",
      "The provided template must be a React Router project with a `package.json` " +
        `file, but that file does not exist in ${color.bold(relativePath)}.`,
    );
    throw new Error(`package.json does not exist in ${ctx.cwd}`);
  }

  let contents = await readFile(packageJSONPath, "utf-8");
  let packageJSON: any;
  try {
    packageJSON = JSON.parse(contents);
    if (!isValidJsonObject(packageJSON)) {
      throw Error();
    }
  } catch (err) {
    error(
      "Oh no!",
      "The provided template must be a React Router project with a `package.json` " +
        `file, but that file is invalid.`,
    );
    throw err;
  }

  for (let pkgKey of ["dependencies", "devDependencies"] as const) {
    let dependencies = packageJSON[pkgKey];
    if (!dependencies) continue;

    if (!isValidJsonObject(dependencies)) {
      error(
        "Oh no!",
        "The provided template must be a React Router project with a `package.json` " +
          `file, but its ${pkgKey} value is invalid.`,
      );
      throw new Error(`package.json ${pkgKey} are invalid`);
    }

    for (let dependency in dependencies) {
      let version = dependencies[dependency];
      if (
        (dependency.startsWith("@react-router/") ||
          dependency === "react-router") &&
        version === "*"
      ) {
        dependencies[dependency] = semver.prerelease(ctx.reactRouterVersion)
          ? // Templates created from prereleases should pin to a specific version
            ctx.reactRouterVersion
          : "^" + ctx.reactRouterVersion;
      }
    }
  }

  packageJSON.name = ctx.projectName;