44 lines
1.8 KiB
JavaScript
44 lines
1.8 KiB
JavaScript
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// Current version.
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export var VERSION = '1.13.6';
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// Establish the root object, `window` (`self`) in the browser, `global`
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// on the server, or `this` in some virtual machines. We use `self`
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// instead of `window` for `WebWorker` support.
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export var root = (typeof self == 'object' && self.self === self && self) ||
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(typeof global == 'object' && global.global === global && global) ||
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Function('return this')() ||
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{};
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// Save bytes in the minified (but not gzipped) version:
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export var ArrayProto = Array.prototype, ObjProto = Object.prototype;
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export var SymbolProto = typeof Symbol !== 'undefined' ? Symbol.prototype : null;
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// Create quick reference variables for speed access to core prototypes.
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export var push = ArrayProto.push,
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slice = ArrayProto.slice,
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toString = ObjProto.toString,
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hasOwnProperty = ObjProto.hasOwnProperty;
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// Modern feature detection.
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export var supportsArrayBuffer = typeof ArrayBuffer !== 'undefined',
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supportsDataView = typeof DataView !== 'undefined';
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// All **ECMAScript 5+** native function implementations that we hope to use
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// are declared here.
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export var nativeIsArray = Array.isArray,
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nativeKeys = Object.keys,
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nativeCreate = Object.create,
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nativeIsView = supportsArrayBuffer && ArrayBuffer.isView;
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// Create references to these builtin functions because we override them.
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export var _isNaN = isNaN,
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_isFinite = isFinite;
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// Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
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export var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
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export var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
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'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];
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// The largest integer that can be represented exactly.
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export var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
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