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on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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1 | var baseToNumber = require('./_baseToNumber'),
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2 | baseToString = require('./_baseToString');
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3 |
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4 | /**
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5 | * Creates a function that performs a mathematical operation on two values.
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6 | *
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7 | * @private
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8 | * @param {Function} operator The function to perform the operation.
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9 | * @param {number} [defaultValue] The value used for `undefined` arguments.
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10 | * @returns {Function} Returns the new mathematical operation function.
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11 | */
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12 | function createMathOperation(operator, defaultValue) {
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13 | return function(value, other) {
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14 | var result;
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15 | if (value === undefined && other === undefined) {
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16 | return defaultValue;
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17 | }
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18 | if (value !== undefined) {
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19 | result = value;
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20 | }
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21 | if (other !== undefined) {
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22 | if (result === undefined) {
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23 | return other;
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24 | }
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25 | if (typeof value == 'string' || typeof other == 'string') {
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26 | value = baseToString(value);
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27 | other = baseToString(other);
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28 | } else {
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29 | value = baseToNumber(value);
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30 | other = baseToNumber(other);
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31 | }
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32 | result = operator(value, other);
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33 | }
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34 | return result;
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35 | };
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36 | }
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37 |
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38 | module.exports = createMathOperation;
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