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import { STATE_SYMBOL } from './constants';
import * as w from './warnings.js';
const object_is = Object.is;
if (DEV) {
const array_prototype = Array.prototype;
const original_index_of = array_prototype.indexOf;
array_prototype.indexOf = function (search_element, from_index) {
const index = original_index_of.call(this, search_element, from_index);
if (
index === -1 &&
search_element != null &&
typeof search_element === 'object' &&
STATE_SYMBOL in search_element
) {
const o = search_element[STATE_SYMBOL];
if (o != null) {
if (original_index_of.call(this, o.p, from_index) !== -1) {
// fire warning
console.warn('TODO: $state referenced non-state');
}
}
}
return index;
};
const original_last_index_of = array_prototype.lastIndexOf;
array_prototype.lastIndexOf = function (search_element, from_index) {
const index = original_last_index_of.call(this, search_element, from_index);
if (
index === -1 &&
search_element != null &&
typeof search_element === 'object' &&
STATE_SYMBOL in search_element
) {
const o = search_element[STATE_SYMBOL];
if (o != null) {
if (original_last_index_of.call(this, o.p, from_index) !== -1) {
// fire warning
console.warn('TODO: $state referenced non-state');
}
}
}
return index;
};
const original_includes = array_prototype.includes;
array_prototype.includes = function (search_element, from_index) {
const has = original_includes.call(this, search_element, from_index);
if (
has &&
search_element != null &&
typeof search_element === 'object' &&
STATE_SYMBOL in search_element
) {
const o = search_element[STATE_SYMBOL];
if (o != null) {
if (original_includes.call(this, o.p, from_index)) {
// fire warning
console.warn('TODO: $state referenced non-state');
}
}
}
return has;
};
}
/**
* @param {any} a
* @param {any} b
* @returns {boolean}
*/
export function state_is(a, b) {
if (a != null && typeof a === 'object' && STATE_SYMBOL in a) {
const o = a[STATE_SYMBOL];
if (o != null) {
return object_is(o.p, b);
}
} else if (b != null && typeof b === 'object' && STATE_SYMBOL in b) {
const o = b[STATE_SYMBOL];
if (o != null) {
return object_is(o.p, a);
}
}
return object_is(a, b);
}
/**
* @param {any} a
* @param {any} b
* @returns {boolean}
*/
export function strict_equals(a, b) {
if (DEV) {
if (state_is(a, b)) {
// fire warning
console.warn('TODO: $state referenced non-state');
}
}
return a === b;
}
/**
* @param {any} a
* @param {any} b
* @returns {boolean}
*/
export function equals(a, b) {
if (DEV) {
check_dev_equals(a, b);
}
return a == b;
}
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