All files / src/internal/client/dev equality.js

79.78% Statements 75/94
61.53% Branches 8/13
71.42% Functions 5/7
79.34% Lines 73/92

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 932x 2x 2x 2x 4x 4x 4x 4x 4x 4x     4x 4x 4x 4x 836783x 836783x 836783x 301243x 301243x 301243x     301243x 836783x 836783x 4x 4x 4x 37778x 37778x 37778x 6x 6x 6x     6x 37778x 37778x 4x 4x 4x 1089498x 1089498x 1089498x 549634x 549634x 549634x     549634x 1089498x 1089498x 4x 4x 4x 4x       4x 4x 2x 2x 2x 2x 2x 2x 2x 2x 8x     8x 8x 8x 2x 2x 2x 2x 2x 2x 2x 2x              
import * as w from '../warnings.js';
import { get_proxied_value } from '../proxy.js';
 
export function init_array_prototype_warnings() {
	const array_prototype = Array.prototype;
	// The REPL ends up here over and over, and this prevents it from adding more and more patches
	// of the same kind to the prototype, which would slow down everything over time.
	// @ts-expect-error
	const cleanup = Array.__svelte_cleanup;
	if (cleanup) {
		cleanup();
	}
 
	const { indexOf, lastIndexOf, includes } = array_prototype;
 
	array_prototype.indexOf = function (item, from_index) {
		const index = indexOf.call(this, item, from_index);
 
		if (index === -1) {
			const test = indexOf.call(get_proxied_value(this), get_proxied_value(item), from_index);
 
			if (test !== -1) {
				w.state_proxy_equality_mismatch('array.indexOf(...)');
			}
		}
 
		return index;
	};
 
	array_prototype.lastIndexOf = function (item, from_index) {
		const index = lastIndexOf.call(this, item, from_index);
 
		if (index === -1) {
			const test = lastIndexOf.call(get_proxied_value(this), get_proxied_value(item), from_index);
 
			if (test !== -1) {
				w.state_proxy_equality_mismatch('array.lastIndexOf(...)');
			}
		}
 
		return index;
	};
 
	array_prototype.includes = function (item, from_index) {
		const has = includes.call(this, item, from_index);
 
		if (!has) {
			const test = includes.call(get_proxied_value(this), get_proxied_value(item), from_index);
 
			if (test) {
				w.state_proxy_equality_mismatch('array.includes(...)');
			}
		}
 
		return has;
	};
 
	// @ts-expect-error
	Array.__svelte_cleanup = () => {
		array_prototype.indexOf = indexOf;
		array_prototype.lastIndexOf = lastIndexOf;
		array_prototype.includes = includes;
	};
}
 
/**
 * @param {any} a
 * @param {any} b
 * @param {boolean} equal
 * @returns {boolean}
 */
export function strict_equals(a, b, equal = true) {
	if ((a === b) !== (get_proxied_value(a) === get_proxied_value(b))) {
		w.state_proxy_equality_mismatch(equal ? '===' : '!==');
	}
 
	return (a === b) === equal;
}
 
/**
 * @param {any} a
 * @param {any} b
 * @param {boolean} equal
 * @returns {boolean}
 */
export function equals(a, b, equal = true) {
	if ((a == b) !== (get_proxied_value(a) == get_proxied_value(b))) {
		w.state_proxy_equality_mismatch(equal ? '==' : '!=');
	}

	return (a == b) === equal;
}