@streetscape.gl/monochrome/dist/es6/utils/memoize.js

A toolkit of React components for streetscape.gl

function isEqual(arr1, arr2) {
  const len = arr1.length;

  if (len !== arr2.length) {
    return false;
  }

  for (let i = 0; i < len; i++) {
    if (arr1[i] !== arr2[i]) {
      return false;
    }
  }

  return true;
}

export default function memoize(compute) {
  let cachedArgs = [];
  let cachedResult;
  return function memoizedFunc() {
    if (!isEqual(arguments, cachedArgs)) {
      cachedResult = compute.apply(this, arguments);
      cachedArgs = Array.from(arguments);
    }

    return cachedResult;
  };
}
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