ivi
Version:
Lightweight Embeddable Web UI Library.
63 lines • 1.49 kB
JavaScript
/**
* Prevents triggering updates.
*/
export const preventUpdates = (a, b) => true;
/**
* Checks if values are equal with a strict equality operator `===`.
*
* @param a
* @param b
* @returns True when values are strictly equal.
*/
export const strictEq = (a, b) => a === b;
const objectKeys = Object.keys;
/**
* Checks if objects are shallow equal.
*
* shallowEq algorithm is using strict equality operator `===` to
* compare object values.
*
* @param a
* @param b
* @returns True when objects are shallow equal.
*/
export const shallowEq = (a, b) => {
if (a !== b) {
const aKeys = objectKeys(a);
const bKeys = objectKeys(b);
if (aKeys.length !== bKeys.length) {
return false;
}
for (let i = 0; i < aKeys.length; ++i) {
const key = aKeys[i];
if (a[key] !== b[key]) {
return false;
}
}
}
return true;
};
/**
* Checks if arrays are shallow equal.
*
* shallowEqArray algorithm is using strict equality operator `===` to
* compare array values.
*
* @param a
* @param b
* @returns True whan arrays are shallow equal.
*/
export const shallowEqArray = (a, b) => {
if (a !== b) {
if (a.length !== b.length) {
return false;
}
for (let i = 0; i < a.length; ++i) {
if (a[i] !== b[i]) {
return false;
}
}
}
return true;
};
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