1 | var baseToString = require('./_baseToString'),
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2 | castSlice = require('./_castSlice'),
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3 | hasUnicode = require('./_hasUnicode'),
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4 | isIterateeCall = require('./_isIterateeCall'),
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5 | isRegExp = require('./isRegExp'),
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6 | stringToArray = require('./_stringToArray'),
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7 | toString = require('./toString');
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8 |
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9 | /** Used as references for the maximum length and index of an array. */
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10 | var MAX_ARRAY_LENGTH = 4294967295;
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11 |
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12 | /**
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13 | * Splits `string` by `separator`.
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14 | *
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15 | * **Note:** This method is based on
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16 | * [`String#split`](https://mdn.io/String/split).
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17 | *
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18 | * @static
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19 | * @memberOf _
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20 | * @since 4.0.0
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21 | * @category String
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22 | * @param {string} [string=''] The string to split.
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23 | * @param {RegExp|string} separator The separator pattern to split by.
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24 | * @param {number} [limit] The length to truncate results to.
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25 | * @returns {Array} Returns the string segments.
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26 | * @example
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27 | *
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28 | * _.split('a-b-c', '-', 2);
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29 | * // => ['a', 'b']
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30 | */
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31 | function split(string, separator, limit) {
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32 | if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
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33 | separator = limit = undefined;
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34 | }
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35 | limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;
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36 | if (!limit) {
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37 | return [];
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38 | }
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39 | string = toString(string);
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40 | if (string && (
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41 | typeof separator == 'string' ||
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42 | (separator != null && !isRegExp(separator))
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43 | )) {
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44 | separator = baseToString(separator);
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45 | if (!separator && hasUnicode(string)) {
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46 | return castSlice(stringToArray(string), 0, limit);
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47 | }
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48 | }
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49 | return string.split(separator, limit);
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50 | }
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51 |
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52 | module.exports = split;
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