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index.js
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index.js
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function shallowEqualProps(objA, objB) {
if (objA === objB) {
return true;
}
if (typeof objA !== 'object' || objA === null ||
typeof objB !== 'object' || objB === null) {
return false;
}
var keysA = Object.keys(objA);
var keysB = Object.keys(objB);
if (keysA.length !== keysB.length) {
return false;
}
// Test for A's keys different from B.
var bHasOwnProperty = Object.prototype.hasOwnProperty.bind(objB);
for (var i = 0; i < keysA.length; i++) {
if (keysA[i] === 'statics') continue;
if (!bHasOwnProperty(keysA[i]) || objA[keysA[i]] !== objB[keysA[i]]) {
return false;
}
}
return true;
}
function shallowEqual(objA, objB) {
if (objA === objB) {
return true;
}
if (typeof objA !== 'object' || objA === null ||
typeof objB !== 'object' || objB === null) {
return false;
}
var keysA = Object.keys(objA);
var keysB = Object.keys(objB);
if (keysA.length !== keysB.length) {
return false;
}
// Test for A's keys different from B.
var bHasOwnProperty = Object.prototype.hasOwnProperty.bind(objB);
for (var i = 0; i < keysA.length; i++) {
if (!bHasOwnProperty(keysA[i]) || objA[keysA[i]] !== objB[keysA[i]]) {
return false;
}
}
return true;
}
var ComponentRenderMixin = {
shouldComponentUpdate: function(nextProps, nextState) {
return !shallowEqualProps(this.props, nextProps) ||
!shallowEqual(this.state, nextState);
}
};