4.5
Version:
Monadic test assertions
94 lines • 2.88 kB
JavaScript
;
var functionName_1 = require("./functionName");
var type_1 = require("./type");
// slightly modified version of ramda's R.equals
function isEqual(a, b) {
return _isEqual(a, b, [], []);
}
exports.isEqual = isEqual;
function _isEqual(a, b, stackA, stackB) {
if (a === b)
return true;
if (type_1.type(a) !== type_1.type(b))
return false;
// tslint:disable-next-line
if (a == null || b == null)
return false;
if (typeof a.equals === 'function' || typeof b.equals === 'function')
return typeof a.equals === 'function' && a.equals(b) &&
typeof b.equals === 'function' && b.equals(a);
switch (type_1.type(a)) {
case 'Arguments':
case 'Array':
case 'Object':
if (typeof a.constructor === 'function' &&
functionName_1.functionName(a.constructor) === 'Promise')
return a === b;
break;
case 'Boolean':
case 'Number':
case 'String':
if (!(typeof a === typeof b && a.valueOf() === b.valueOf()))
return false;
break;
case 'Date':
if (a.valueOf() !== b.valueOf())
return false;
break;
case 'Error':
return a.name === b.name && a.message === b.message;
case 'RegExp':
if (!(a.source === b.source &&
a.global === b.global &&
a.ignoreCase === b.ignoreCase &&
a.multiline === b.multiline &&
a.sticky === b.sticky &&
a.unicode === b.unicode)) {
return false;
}
break;
case 'Map':
case 'Set':
if (!_isEqual(Array.from(a.entries()), Array.from(b.entries()), stackA, stackB))
return false;
break;
case 'Int8Array':
case 'Uint8Array':
case 'Uint8ClampedArray':
case 'Int16Array':
case 'Uint16Array':
case 'Int32Array':
case 'Uint32Array':
case 'Float32Array':
case 'Float64Array':
break;
case 'ArrayBuffer':
break;
default:
// Values of other types are only equal if identical.
return false;
}
var keysA = Object.keys(a);
if (keysA.length !== Object.keys(b).length)
return false;
var idx = stackA.length - 1;
while (idx >= 0) {
if (stackA[idx] === a)
return stackB[idx] === b;
idx -= 1;
}
stackA.push(a);
stackB.push(b);
idx = keysA.length - 1;
while (idx >= 0) {
var key = keysA[idx];
if (!(b[key] && _isEqual(b[key], a[key], stackA, stackB)))
return false;
idx -= 1;
}
stackA.pop();
stackB.pop();
return true;
}
;
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