1 | 'use strict';
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 |
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7 | var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
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8 |
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9 | exports.isNestedStyle = isNestedStyle;
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10 | exports.mergeStyles = mergeStyles;
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11 | function isNestedStyle(value) {
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12 |
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13 |
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14 | return value && value.constructor === Object && value.toString === Object.prototype.toString;
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15 | }
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16 |
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17 |
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18 | function mergeStyles(styles) {
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19 | var result = {};
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20 |
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21 | styles.forEach(function (style) {
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22 | if (!style || (typeof style === 'undefined' ? 'undefined' : _typeof(style)) !== 'object') {
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23 | return;
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24 | }
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25 |
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26 | if (Array.isArray(style)) {
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27 | style = mergeStyles(style);
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28 | }
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29 |
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30 | Object.keys(style).forEach(function (key) {
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31 |
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32 | if (!isNestedStyle(style[key]) || !isNestedStyle(result[key])) {
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33 | result[key] = style[key];
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34 | return;
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35 | }
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36 |
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37 |
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38 |
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39 |
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40 |
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41 | if (key.indexOf('@media') === 0) {
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42 | var newKey = key;
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43 | while (true) {
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44 |
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45 | newKey += ' ';
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46 | if (!result[newKey]) {
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47 | result[newKey] = style[key];
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48 | return;
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49 | }
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50 | }
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51 | }
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52 |
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53 |
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54 | result[key] = mergeStyles([result[key], style[key]]);
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55 | });
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56 | });
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57 |
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58 | return result;
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59 | } |
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