set-state-compare
Version:
setState for React that compares with the current state and only sets the state if changed.
129 lines • 13.3 kB
JavaScript
/**
* @param {any} value1
* @param {any} value2
* @param {boolean} [debug]
* @returns {boolean}
*/
function anythingDifferent(value1, value2, debug) {
if (Array.isArray(value1) && Array.isArray(value2)) {
return arrayDifferent(value1, value2);
}
else if (isSimpleObject(value1) && isSimpleObject(value2)) {
return simpleObjectDifferent(value1, value2, true);
}
else if (typeof value1 == "object" && typeof value2 == "object" && value1 && value2) {
return !Object.is(value1, value2);
}
else if (value1 !== value2) {
if (debug)
console.log(`Value 1 ${value1} wasn't the same as value 2 ${value2}`);
return true;
}
return false;
}
/**
* @param {any} value1
* @param {any} value2
* @param {boolean} [debug]
* @returns {boolean}
*/
function referenceDifferent(value1, value2, debug) {
const isSame = Object.is(value1, value2);
if (!isSame && debug) {
console.log(`Value 1 ${value1} wasn't the same as value 2 ${value2}`);
}
return !isSame;
}
/**
* @param {any[]} array1
* @param {any[]} array2
* @param {boolean} [debug]
* @returns {boolean}
*/
function arrayReferenceDifferent(array1, array2, debug) {
if (array1.length !== array2.length) {
if (debug) {
console.log(`Array length ${array1.length} wasn't the same as ${array2.length}`);
}
return true;
}
for (let index = 0; index < array1.length; index += 1) {
if (referenceDifferent(array1[index], array2[index], debug)) {
return true;
}
}
return false;
}
/**
* @param {any[]} array1
* @param {any[]} array2
* @returns {boolean}
*/
function arrayDifferent(array1, array2) {
if (array1.length != array2.length) {
return true;
}
for (const key in array1) {
if (anythingDifferent(array1[key], array2[key])) {
return true;
}
}
return false;
}
/**
* @param {any} value
* @returns {boolean}
*/
function isSimpleObject(value) {
// Objects that contain $$typeof are special React objects that have recursive issues
if (typeof value == "object" && value !== null && value.constructor.name == "Object" && !value["$$typeof"]) {
return true;
}
return false;
}
/**
* @param {object} object1
* @param {object} object2
* @param {boolean} checkLength
* @returns {boolean}
*/
function simpleObjectDifferent(object1, object2, checkLength) {
if (checkLength && Object.keys(object1).length !== Object.keys(object2).length) {
return true;
}
return simpleObjectValuesDifferent(object1, object2);
}
/**
* @param {any} object1
* @param {any} object2
* @param {object} [args]
* @param {boolean} [args.debug]
* @param {(string) => boolean} [args.ignore]
* @returns {boolean}
*/
function simpleObjectValuesDifferent(object1, object2, args) {
for (const key in object1) {
if (args?.ignore && args.ignore({ key })) {
if (args?.debug)
console.log(`Ignoring key ${key}`);
continue;
}
if (args?.debug)
console.log({ key, object1: object1[key], object2: object2[key] });
if (!(key in object2)) {
if (args?.debug) {
console.log(`Key ${key} wasn't found in object`);
}
return true;
}
else if (anythingDifferent(object1[key], object2[key], args?.debug)) {
if (args?.debug) {
console.log(`Something was different for ${key}`);
}
return true;
}
}
return false;
}
export { anythingDifferent, arrayDifferent, arrayReferenceDifferent, isSimpleObject, referenceDifferent, simpleObjectDifferent, simpleObjectValuesDifferent };
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index < array1.length; index += 1) {\n    if (referenceDifferent(array1[index], array2[index], debug)) {\n      return true\n    }\n  }\n\n  return false\n}\n\n/**\n * @param {any[]} array1\n * @param {any[]} array2\n * @returns {boolean}\n */\nfunction arrayDifferent(array1, array2) {\n  if (array1.length != array2.length) {\n    return true\n  }\n\n  for (const key in array1) {\n    if (anythingDifferent(array1[key], array2[key])) {\n      return true\n    }\n  }\n\n  return false\n}\n\n/**\n * @param {any} value\n * @returns {boolean}\n */\nfunction isSimpleObject(value) {\n  // Objects that contain $$typeof are special React objects that have recursive issues\n  if (typeof value == \"object\" && value !== null && value.constructor.name == \"Object\" && !value[\"$$typeof\"]) {\n    return true\n  }\n\n  return false\n}\n\n/**\n * @param {object} object1\n * @param {object} object2\n * @param {boolean} checkLength\n * @returns {boolean}\n */\nfunction simpleObjectDifferent(object1, object2, checkLength) {\n  if (checkLength && Object.keys(object1).length !== Object.keys(object2).length) {\n    return true\n  }\n\n  return simpleObjectValuesDifferent(object1, object2)\n}\n\n/**\n * @param {any} object1\n * @param {any} object2\n * @param {object} [args]\n * @param {boolean} [args.debug]\n * @param {(string) => boolean} [args.ignore]\n * @returns {boolean}\n */\nfunction simpleObjectValuesDifferent(object1, object2, args) {\n  for (const key in object1) {\n    if (args?.ignore && args.ignore({key})) {\n      if (args?.debug) console.log(`Ignoring key ${key}`)\n      continue\n    }\n\n    if (args?.debug) console.log({key, object1: object1[key], object2: object2[key]})\n\n    if (!(key in object2)) {\n      if (args?.debug) {\n        console.log(`Key ${key} wasn't found in object`)\n      }\n\n      return true\n    } else if (anythingDifferent(object1[key], object2[key], args?.debug)) {\n      if (args?.debug) {\n        console.log(`Something was different for ${key}`)\n      }\n\n      return true\n    }\n  }\n\n  return false\n}\n\nexport {\n  anythingDifferent,\n  arrayDifferent,\n  arrayReferenceDifferent,\n  isSimpleObject,\n  referenceDifferent,\n  simpleObjectDifferent,\n  simpleObjectValuesDifferent\n}\n"]}