AK-21/Graphite-Industrial-Intelligence

1var has = Object.prototype.hasOwnProperty;2 3function find(iter, tar, key) {4	for (key of iter.keys()) {5		if (dequal(key, tar)) return key;6	}7}8 9export function dequal(foo, bar) {10	var ctor, len, tmp;11	if (foo === bar) return true;12 13	if (foo && bar && (ctor=foo.constructor) === bar.constructor) {14		if (ctor === Date) return foo.getTime() === bar.getTime();15		if (ctor === RegExp) return foo.toString() === bar.toString();16 17		if (ctor === Array) {18			if ((len=foo.length) === bar.length) {19				while (len-- && dequal(foo[len], bar[len]));20			}21			return len === -1;22		}23 24		if (ctor === Set) {25			if (foo.size !== bar.size) {26				return false;27			}28			for (len of foo) {29				tmp = len;30				if (tmp && typeof tmp === 'object') {31					tmp = find(bar, tmp);32					if (!tmp) return false;33				}34				if (!bar.has(tmp)) return false;35			}36			return true;37		}38 39		if (ctor === Map) {40			if (foo.size !== bar.size) {41				return false;42			}43			for (len of foo) {44				tmp = len[0];45				if (tmp && typeof tmp === 'object') {46					tmp = find(bar, tmp);47					if (!tmp) return false;48				}49				if (!dequal(len[1], bar.get(tmp))) {50					return false;51				}52			}53			return true;54		}55 56		if (ctor === ArrayBuffer) {57			foo = new Uint8Array(foo);58			bar = new Uint8Array(bar);59		} else if (ctor === DataView) {60			if ((len=foo.byteLength) === bar.byteLength) {61				while (len-- && foo.getInt8(len) === bar.getInt8(len));62			}63			return len === -1;64		}65 66		if (ArrayBuffer.isView(foo)) {67			if ((len=foo.byteLength) === bar.byteLength) {68				while (len-- && foo[len] === bar[len]);69			}70			return len === -1;71		}72 73		if (!ctor || typeof foo === 'object') {74			len = 0;75			for (ctor in foo) {76				if (has.call(foo, ctor) && ++len && !has.call(bar, ctor)) return false;77				if (!(ctor in bar) || !dequal(foo[ctor], bar[ctor])) return false;78			}79			return Object.keys(bar).length === len;80		}81	}82 83	return foo !== foo && bar !== bar;84}85