From 46e43f4bde4a35785b4997b81e86cd19f046b69b Mon Sep 17 00:00:00 2001 From: Minteck Date: Tue, 21 Dec 2021 16:52:28 +0100 Subject: Commit --- .../es-abstract/2019/FlattenIntoArray.js | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 src/node_modules/es-abstract/2019/FlattenIntoArray.js (limited to 'src/node_modules/es-abstract/2019/FlattenIntoArray.js') diff --git a/src/node_modules/es-abstract/2019/FlattenIntoArray.js b/src/node_modules/es-abstract/2019/FlattenIntoArray.js new file mode 100644 index 0000000..5d6254e --- /dev/null +++ b/src/node_modules/es-abstract/2019/FlattenIntoArray.js @@ -0,0 +1,58 @@ +'use strict'; + +var GetIntrinsic = require('../GetIntrinsic'); + +var $TypeError = GetIntrinsic('%TypeError%'); + +var MAX_SAFE_INTEGER = require('../helpers/maxSafeInteger'); + +var Call = require('./Call'); +var CreateDataPropertyOrThrow = require('./CreateDataPropertyOrThrow'); +var Get = require('./Get'); +var HasProperty = require('./HasProperty'); +var IsArray = require('./IsArray'); +var ToLength = require('./ToLength'); +var ToString = require('./ToString'); + +// https://ecma-international.org/ecma-262/10.0/#sec-flattenintoarray + +// eslint-disable-next-line max-params +module.exports = function FlattenIntoArray(target, source, sourceLen, start, depth) { + var mapperFunction; + if (arguments.length > 5) { + mapperFunction = arguments[5]; + } + + var targetIndex = start; + var sourceIndex = 0; + while (sourceIndex < sourceLen) { + var P = ToString(sourceIndex); + var exists = HasProperty(source, P); + if (exists === true) { + var element = Get(source, P); + if (typeof mapperFunction !== 'undefined') { + if (arguments.length <= 6) { + throw new $TypeError('Assertion failed: thisArg is required when mapperFunction is provided'); + } + element = Call(mapperFunction, arguments[6], [element, sourceIndex, source]); + } + var shouldFlatten = false; + if (depth > 0) { + shouldFlatten = IsArray(element); + } + if (shouldFlatten) { + var elementLen = ToLength(Get(element, 'length')); + targetIndex = FlattenIntoArray(target, element, elementLen, targetIndex, depth - 1); + } else { + if (targetIndex >= MAX_SAFE_INTEGER) { + throw new $TypeError('index too large'); + } + CreateDataPropertyOrThrow(target, ToString(targetIndex), element); + targetIndex += 1; + } + } + sourceIndex += 1; + } + + return targetIndex; +}; -- cgit