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build/node_modules/prepack/lib/intrinsics/ecma262/Number.js
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build/node_modules/prepack/lib/intrinsics/ecma262/Number.js
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }(); /**
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* Copyright (c) 2017-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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exports.default = function (realm) {
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// ECMA262 20.1.1
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var func = new _index.NativeFunctionValue(realm, "Number", "Number", 1, function (context, _ref, argCount, NewTarget) {
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var _ref2 = _slicedToArray(_ref, 1),
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value = _ref2[0];
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var n = void 0;
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// 1. If no arguments were passed to this function invocation, let n be +0.
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if (argCount === 0) {
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n = realm.intrinsics.zero;
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} else {
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// 2. Else, let n be ? ToNumber(value).
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n = new _index.NumberValue(realm, _singletons.To.ToNumber(realm, value));
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}
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// 3. If NewTarget is undefined, return n.
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if (!NewTarget) return n;
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// 4. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%NumberPrototype%", « [[NumberData]] »).
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var O = _singletons.Create.OrdinaryCreateFromConstructor(realm, NewTarget, "NumberPrototype", { $NumberData: undefined });
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// 5. Set the value of O's [[NumberData]] internal slot to n.
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O.$NumberData = n;
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// 6. Return O.
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return O;
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});
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// ECMA262 20.1.2.1
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func.defineNativeConstant("EPSILON", new _index.NumberValue(realm, 2.220446049250313e-16));
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// ECMA262 20.1.2.2
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if (!realm.isCompatibleWith(realm.MOBILE_JSC_VERSION)) func.defineNativeMethod("isFinite", 1, function (context, _ref3) {
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var _ref4 = _slicedToArray(_ref3, 1),
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number = _ref4[0];
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// 1. If Type(number) is not Number, return false.
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if (!number.mightBeNumber()) return realm.intrinsics.false;
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// 2. If number is NaN, +∞, or -∞, return false.
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number = number.throwIfNotConcreteNumber();
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if (isNaN(number.value) || number.value === +Infinity || number.value === -Infinity) return realm.intrinsics.false;
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// 3. Otherwise, return true.
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return realm.intrinsics.true;
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});
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// ECMA262 20.1.2.3
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if (!realm.isCompatibleWith(realm.MOBILE_JSC_VERSION)) func.defineNativeMethod("isInteger", 1, function (context, _ref5) {
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var _ref6 = _slicedToArray(_ref5, 1),
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number = _ref6[0];
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// 1. If Type(number) is not Number, return false.
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if (!number.mightBeNumber()) return realm.intrinsics.false;
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// 2. If number is NaN, +∞, or -∞, return false.
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number = number.throwIfNotConcreteNumber();
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if (isNaN(number.value) || number.value === +Infinity || number.value === -Infinity) return realm.intrinsics.false;
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// 3. Let integer be ToInteger(number).
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var integer = _singletons.To.ToInteger(realm, number);
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// 4. If integer is not equal to number, return false.
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if (integer !== number.value) return realm.intrinsics.false;
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// 5. Otherwise, return true.
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return realm.intrinsics.true;
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});
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// ECMA262 20.1.2.4
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if (!realm.isCompatibleWith(realm.MOBILE_JSC_VERSION)) func.defineNativeMethod("isNaN", 1, function (context, _ref7) {
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var _ref8 = _slicedToArray(_ref7, 1),
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number = _ref8[0];
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// 1. If Type(number) is not Number, return false.
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if (!number.mightBeNumber()) return realm.intrinsics.false;
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// 2. If number is NaN, return true.
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number = number.throwIfNotConcreteNumber();
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if (isNaN(number.value)) return realm.intrinsics.true;
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// 3. Otherwise, return false.
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return realm.intrinsics.false;
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});
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// ECMA262 20.1.2.5
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if (!realm.isCompatibleWith(realm.MOBILE_JSC_VERSION)) func.defineNativeMethod("isSafeInteger", 1, function (context, _ref9) {
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var _ref10 = _slicedToArray(_ref9, 1),
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number = _ref10[0];
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// 1. If Type(number) is not Number, return false.
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if (!number.mightBeNumber()) return realm.intrinsics.false;
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// 2. If number is NaN, +∞, or -∞, return false.
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number = number.throwIfNotConcreteNumber();
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if (isNaN(number.value) || number.value === +Infinity || number.value === -Infinity) return realm.intrinsics.false;
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// 3. Let integer be ToInteger(number).
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var integer = _singletons.To.ToInteger(realm, number);
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// 4. If integer is not equal to number, return false.
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if (integer !== number.value) return realm.intrinsics.false;
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// 5. If abs(integer) ≤ 2^53-1, return true.
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if (Math.abs(integer) <= Math.pow(2, 53) - 1) return realm.intrinsics.true;
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// 6. Otherwise, return false.
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return realm.intrinsics.false;
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});
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// ECMA262 20.1.2.6
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func.defineNativeConstant("MAX_SAFE_INTEGER", new _index.NumberValue(realm, 9007199254740991));
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// ECMA262 20.1.2.7
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func.defineNativeConstant("MAX_VALUE", new _index.NumberValue(realm, 1.7976931348623157e308));
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// ECMA262 20.1.2.8
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func.defineNativeConstant("MIN_SAFE_INTEGER", new _index.NumberValue(realm, -9007199254740991));
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// ECMA262 20.1.2.9
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func.defineNativeConstant("MIN_VALUE", new _index.NumberValue(realm, 5e-324));
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// ECMA262 20.1.2.10
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func.defineNativeConstant("NaN", realm.intrinsics.NaN);
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// ECMA262 20.1.2.11
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func.defineNativeConstant("NEGATIVE_INFINITY", realm.intrinsics.negativeInfinity);
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// ECMA262 20.1.2.12
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func.defineNativeProperty("parseFloat", realm.intrinsics.parseFloat);
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// ECMA262 20.1.2.13
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func.defineNativeProperty("parseInt", realm.intrinsics.parseInt);
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// ECMA262 20.1.2.14
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func.defineNativeConstant("POSITIVE_INFINITY", realm.intrinsics.Infinity);
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return func;
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};
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var _index = require("../../values/index.js");
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var _singletons = require("../../singletons.js");
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//# sourceMappingURL=Number.js.map
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