1 | var _curry2 =
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2 | /*#__PURE__*/
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3 | require("./internal/_curry2");
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4 |
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5 | var _isArray =
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6 | /*#__PURE__*/
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7 | require("./internal/_isArray");
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8 |
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9 | var equals =
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10 | /*#__PURE__*/
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11 | require("./equals");
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12 | /**
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13 | * Returns the position of the last occurrence of an item in an array, or -1 if
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14 | * the item is not included in the array. [`R.equals`](#equals) is used to
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15 | * determine equality.
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16 | *
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17 | * @func
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18 | * @memberOf R
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19 | * @since v0.1.0
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20 | * @category List
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21 | * @sig a -> [a] -> Number
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22 | * @param {*} target The item to find.
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23 | * @param {Array} xs The array to search in.
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24 | * @return {Number} the index of the target, or -1 if the target is not found.
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25 | * @see R.indexOf
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26 | * @example
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27 | *
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28 | * R.lastIndexOf(3, [-1,3,3,0,1,2,3,4]); //=> 6
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29 | * R.lastIndexOf(10, [1,2,3,4]); //=> -1
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30 | */
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31 |
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32 |
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33 | var lastIndexOf =
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34 | /*#__PURE__*/
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35 | _curry2(function lastIndexOf(target, xs) {
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36 | if (typeof xs.lastIndexOf === 'function' && !_isArray(xs)) {
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37 | return xs.lastIndexOf(target);
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38 | } else {
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39 | var idx = xs.length - 1;
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40 |
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41 | while (idx >= 0) {
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42 | if (equals(xs[idx], target)) {
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43 | return idx;
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44 | }
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45 |
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46 | idx -= 1;
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47 | }
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48 |
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49 | return -1;
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50 | }
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51 | });
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52 |
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53 | module.exports = lastIndexOf; |
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