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on this file since 8d391a1 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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1 | var baseRange = require('./_baseRange'),
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2 | isIterateeCall = require('./_isIterateeCall'),
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3 | toFinite = require('./toFinite');
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4 |
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5 | /**
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6 | * Creates a `_.range` or `_.rangeRight` function.
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7 | *
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8 | * @private
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9 | * @param {boolean} [fromRight] Specify iterating from right to left.
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10 | * @returns {Function} Returns the new range function.
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11 | */
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12 | function createRange(fromRight) {
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13 | return function(start, end, step) {
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14 | if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
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15 | end = step = undefined;
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16 | }
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17 | // Ensure the sign of `-0` is preserved.
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18 | start = toFinite(start);
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19 | if (end === undefined) {
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20 | end = start;
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21 | start = 0;
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22 | } else {
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23 | end = toFinite(end);
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24 | }
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25 | step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
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26 | return baseRange(start, end, step, fromRight);
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27 | };
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28 | }
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29 |
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30 | module.exports = createRange;
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