vite-plugin-react-server/dist/plugin/resolveProps.js

Vite plugin for React Server Components (RSC)

/**
 * vite-plugin-react-server
 * Copyright (c) Nico Brinkkemper
 * MIT License
 */
function isFunction(value) {
  return typeof value === "function";
}
async function resolveProps({
  propsModule,
  path,
  exportName,
  url
}) {
  if (!propsModule) {
    return {
      type: "error",
      error: new Error(`propsModule is ${typeof propsModule}`)
    };
  }
  if (typeof propsModule !== "object") {
    return {
      type: "error",
      error: new Error(
        `propsModule must be an object, got ${typeof propsModule}`
      )
    };
  }
  const keys = Object.keys(propsModule);
  let found = keys.find((v) => v === exportName || v === url || v === path);
  if (exportName in propsModule) {
    found = exportName;
  }
  if (found) {
    let value = propsModule[found];
    try {
      if (isFunction(value)) {
        const props = await value(url);
        return {
          type: "success",
          key: found,
          props
        };
      }
      if (value && typeof value.then === "function") {
        const props = await value;
        return {
          type: "success",
          key: found,
          props
        };
      }
      if (typeof value === "object" && value !== null) {
        return {
          type: "success",
          key: found,
          props: value
        };
      }
      return {
        type: "error",
        error: new Error(
          `Expected props export "${exportName}" in "${path}" to be a function, promise, or object that resolves to props, instead got typeof ${typeof value}.`
        )
      };
    } catch (error) {
      console.trace(error);
      console.warn(found, "error in resolveProps", propsModule, url, path);
      return {
        type: "error",
        error
      };
    }
  }
  const commonjs = keys.find((v) => v === "exports");
  if (!!commonjs) {
    const exportKeys = commonjs["exports"] ? Object.keys(commonjs["exports"]) : [];
    const foundCommonJS = exportKeys.find(
      (v) => v === exportName || v === url || v === path
    );
    return {
      type: "error",
      error: new Error(
        `Expected props export "${exportName}" in "${path}", but instead got "exports" with ${!!foundCommonJS ? foundCommonJS.toString() : exportKeys.length ? exportKeys.join(", ") : "no keys"}, this will not work. Make sure to set esModule: true in rollupOptions.output. ${JSON.stringify(propsModule)}`
      )
    };
  }
  if (Object.keys(propsModule).includes("error")) {
    return {
      type: "error",
      error: propsModule["error"]
    };
  }
  return {
    type: "error",
    error: new Error(
      `Could not find props export "${exportName}" in "${path}". ${keys.length ? "Available exports: " + keys.join(", ") : 'The object was defined but has no properties. "' + JSON.stringify(propsModule) + '"'}`
    )
  };
}

export { resolveProps };
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