react-native-svg-asset-plugin/lib/utils/func.js

Asset plugin for importing SVG images in React Native

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.memo = memo;

/**
 * Returns a memoized version of the async callback function which
 * will always return the same value on subsequent calls.
 *
 * This is useful to provide lazy, but cached, loading of data.
 */
function memo(callback) {
  let memoizedValue;
  return () => {
    if (!memoizedValue) {
      memoizedValue = callback();
    }

    return memoizedValue;
  };
}