react-native-vision-camera/lib/module/dependencies/ModuleProxy.js

A powerful, high-performance React Native Camera library.

/**
 * Create a lazily-imported module proxy.
 * This is useful for lazily requiring optional dependencies.
 */
export const createModuleProxy = getModule => {
  const holder = {
    module: undefined
  };
  const proxy = new Proxy(holder, {
    get: (target, property) => {
      if (target.module == null) {
        // lazy initialize module via require()
        // caller needs to make sure the require() call is wrapped in a try/catch
        target.module = getModule();
      }
      return target.module[property];
    }
  });
  return proxy;
};
export class OptionalDependencyNotInstalledError extends Error {
  constructor(name) {
    super(`${name} is not installed!`);
  }
}
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