Files
react-native-devtools-frontend/node_modules/is-boolean-object/index.js
T
Tim van der Lippe 2c89197d0d Update ESLint-related packages
R=jacktfranklin@chromium.org

No-Presubmit: True
Bug: none
Change-Id: I52dc24b12e350787085c5e3d131cface7ea87142
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3060705
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
Reviewed-by: Paul Lewis <aerotwist@chromium.org>
2021-07-30 11:02:26 +00:00

27 lines
715 B
JavaScript

'use strict';
var callBound = require('call-bind/callBound');
var $boolToStr = callBound('Boolean.prototype.toString');
var $toString = callBound('Object.prototype.toString');
var tryBooleanObject = function booleanBrandCheck(value) {
try {
$boolToStr(value);
return true;
} catch (e) {
return false;
}
};
var boolClass = '[object Boolean]';
var hasToStringTag = typeof Symbol === 'function' && !!Symbol.toStringTag;
module.exports = function isBoolean(value) {
if (typeof value === 'boolean') {
return true;
}
if (value === null || typeof value !== 'object') {
return false;
}
return hasToStringTag && Symbol.toStringTag in value ? tryBooleanObject(value) : $toString(value) === boolClass;
};