Opal-Estate-Pro/node_modules/es-abstract/es2018.js

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2019-09-13 06:27:52 +02:00
'use strict';
var GetIntrinsic = require('./GetIntrinsic');
var keys = require('object-keys');
var inspect = require('object-inspect');
var ES2017 = require('./es2017');
var assign = require('./helpers/assign');
var forEach = require('./helpers/forEach');
var callBind = require('./helpers/callBind');
var every = require('./helpers/every');
var $String = GetIntrinsic('%String%');
var $Object = GetIntrinsic('%Object%');
var $TypeError = GetIntrinsic('%TypeError%');
var $RegExp = GetIntrinsic('%RegExp%');
var $SymbolProto = GetIntrinsic('%SymbolPrototype%', true);
var $SymbolValueOf = $SymbolProto ? callBind($SymbolProto.valueOf) : null;
var $StringProto = GetIntrinsic('%StringPrototype%');
var $charAt = callBind($StringProto.charAt);
var strSlice = callBind($StringProto.slice);
var $indexOf = callBind($StringProto.indexOf);
var $parseInt = parseInt;
var isDigit = callBind($RegExp.prototype.test, /^[0-9]$/);
var $PromiseResolveOrig = GetIntrinsic('%Promise_resolve%', true);
var $PromiseResolve = $PromiseResolveOrig ? callBind($PromiseResolveOrig) : null;
var $isEnumerable = callBind(GetIntrinsic('%ObjectPrototype%').propertyIsEnumerable);
var $pushApply = callBind.apply(GetIntrinsic('%ArrayPrototype%').push);
var $gOPS = $SymbolValueOf ? $Object.getOwnPropertySymbols : null;
var OwnPropertyKeys = function OwnPropertyKeys(ES, source) {
var ownKeys = keys(source);
if ($gOPS) {
$pushApply(ownKeys, $gOPS(source));
}
return ownKeys;
};
var ES2018 = assign(assign({}, ES2017), {
EnumerableOwnPropertyNames: ES2017.EnumerableOwnProperties,
// https://ecma-international.org/ecma-262/9.0/#sec-thissymbolvalue
thisSymbolValue: function thisSymbolValue(value) {
if (!$SymbolValueOf) {
throw new SyntaxError('Symbols are not supported; thisSymbolValue requires that `value` be a Symbol or a Symbol object');
}
if (this.Type(value) === 'Symbol') {
return value;
}
return $SymbolValueOf(value);
},
// https://www.ecma-international.org/ecma-262/9.0/#sec-isstringprefix
IsStringPrefix: function IsStringPrefix(p, q) {
if (this.Type(p) !== 'String') {
throw new TypeError('Assertion failed: "p" must be a String');
}
if (this.Type(q) !== 'String') {
throw new TypeError('Assertion failed: "q" must be a String');
}
if (p === q || p === '') {
return true;
}
var pLength = p.length;
var qLength = q.length;
if (pLength >= qLength) {
return false;
}
// assert: pLength < qLength
for (var i = 0; i < pLength; i += 1) {
if ($charAt(p, i) !== $charAt(q, i)) {
return false;
}
}
return true;
},
// https://www.ecma-international.org/ecma-262/9.0/#sec-tostring-applied-to-the-number-type
NumberToString: function NumberToString(m) {
if (this.Type(m) !== 'Number') {
throw new TypeError('Assertion failed: "m" must be a String');
}
return $String(m);
},
// https://www.ecma-international.org/ecma-262/9.0/#sec-copydataproperties
CopyDataProperties: function CopyDataProperties(target, source, excludedItems) {
if (this.Type(target) !== 'Object') {
throw new TypeError('Assertion failed: "target" must be an Object');
}
if (!this.IsArray(excludedItems)) {
throw new TypeError('Assertion failed: "excludedItems" must be a List of Property Keys');
}
for (var i = 0; i < excludedItems.length; i += 1) {
if (!this.IsPropertyKey(excludedItems[i])) {
throw new TypeError('Assertion failed: "excludedItems" must be a List of Property Keys');
}
}
if (typeof source === 'undefined' || source === null) {
return target;
}
var ES = this;
var fromObj = ES.ToObject(source);
var sourceKeys = OwnPropertyKeys(ES, fromObj);
forEach(sourceKeys, function (nextKey) {
var excluded = false;
forEach(excludedItems, function (e) {
if (ES.SameValue(e, nextKey) === true) {
excluded = true;
}
});
var enumerable = $isEnumerable(fromObj, nextKey) || (
// this is to handle string keys being non-enumerable in older engines
typeof source === 'string'
&& nextKey >= 0
&& ES.IsInteger(ES.ToNumber(nextKey))
);
if (excluded === false && enumerable) {
var propValue = ES.Get(fromObj, nextKey);
ES.CreateDataProperty(target, nextKey, propValue);
}
});
return target;
},
// https://ecma-international.org/ecma-262/9.0/#sec-promise-resolve
PromiseResolve: function PromiseResolve(C, x) {
if (!$PromiseResolve) {
throw new SyntaxError('This environment does not support Promises.');
}
return $PromiseResolve(C, x);
},
// http://www.ecma-international.org/ecma-262/9.0/#sec-getsubstitution
// eslint-disable-next-line max-statements, max-params, max-lines-per-function
GetSubstitution: function GetSubstitution(matched, str, position, captures, namedCaptures, replacement) {
if (this.Type(matched) !== 'String') {
throw new $TypeError('Assertion failed: `matched` must be a String');
}
var matchLength = matched.length;
if (this.Type(str) !== 'String') {
throw new $TypeError('Assertion failed: `str` must be a String');
}
var stringLength = str.length;
if (!this.IsInteger(position) || position < 0 || position > stringLength) {
throw new $TypeError('Assertion failed: `position` must be a nonnegative integer, and less than or equal to the length of `string`, got ' + inspect(position));
}
var ES = this;
var isStringOrHole = function (capture, index, arr) { return ES.Type(capture) === 'String' || !(index in arr); };
if (!this.IsArray(captures) || !every(captures, isStringOrHole)) {
throw new $TypeError('Assertion failed: `captures` must be a List of Strings, got ' + inspect(captures));
}
if (this.Type(replacement) !== 'String') {
throw new $TypeError('Assertion failed: `replacement` must be a String');
}
var tailPos = position + matchLength;
var m = captures.length;
if (this.Type(namedCaptures) !== 'Undefined') {
namedCaptures = this.ToObject(namedCaptures); // eslint-disable-line no-param-reassign
}
var result = '';
for (var i = 0; i < replacement.length; i += 1) {
// if this is a $, and it's not the end of the replacement
var current = replacement[i];
var isLast = (i + 1) >= replacement.length;
var nextIsLast = (i + 2) >= replacement.length;
if (current === '$' && !isLast) {
var next = replacement[i + 1];
if (next === '$') {
result += '$';
i += 1;
} else if (next === '&') {
result += matched;
i += 1;
} else if (next === '`') {
result += position === 0 ? '' : strSlice(str, 0, position - 1);
i += 1;
} else if (next === "'") {
result += tailPos >= stringLength ? '' : strSlice(str, tailPos);
i += 1;
} else {
var nextNext = nextIsLast ? null : replacement[i + 2];
if (isDigit(next) && next !== '0' && (nextIsLast || !isDigit(nextNext))) {
// $1 through $9, and not followed by a digit
var n = $parseInt(next, 10);
// if (n > m, impl-defined)
result += (n <= m && this.Type(captures[n - 1]) === 'Undefined') ? '' : captures[n - 1];
i += 1;
} else if (isDigit(next) && (nextIsLast || isDigit(nextNext))) {
// $00 through $99
var nn = next + nextNext;
var nnI = $parseInt(nn, 10) - 1;
// if nn === '00' or nn > m, impl-defined
result += (nn <= m && this.Type(captures[nnI]) === 'Undefined') ? '' : captures[nnI];
i += 2;
} else if (next === '<') {
// eslint-disable-next-line max-depth
if (this.Type(namedCaptures) === 'Undefined') {
result += '$<';
i += 2;
} else {
var endIndex = $indexOf(replacement, '>', i);
// eslint-disable-next-line max-depth
if (endIndex > -1) {
var groupName = strSlice(replacement, i, endIndex);
var capture = this.Get(namedCaptures, groupName);
// eslint-disable-next-line max-depth
if (this.Type(capture) !== 'Undefined') {
result += this.ToString(capture);
}
i += '$<' + groupName + '>'.length;
}
}
} else {
result += '$';
}
}
} else {
// the final $, or else not a $
result += replacement[i];
}
}
return result;
}
});
delete ES2018.EnumerableOwnProperties; // replaced with EnumerableOwnPropertyNames
delete ES2018.IsPropertyDescriptor; // not an actual abstract operation
module.exports = ES2018;