Last change
on this file since 6fe77af was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
1.1 KB
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1 | 'use strict';
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2 |
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3 | function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
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4 |
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5 | var postcss = _interopDefault(require('postcss'));
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6 |
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7 | const mediaRegExp = /^media$/i;
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8 | const prefersInterfaceRegExp = /\(\s*prefers-color-scheme\s*:\s*(dark|light|no-preference)\s*\)/i;
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9 | const colorIndexByStyle = {
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10 | dark: 48,
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11 | light: 70,
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12 | 'no-preference': 22
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13 | };
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14 |
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15 | const prefersInterfaceReplacer = ($0, style) => `(color-index: ${colorIndexByStyle[style.toLowerCase()]})`;
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16 |
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17 | var postcss$1 = postcss.plugin('postcss-prefers-color-scheme', opts => {
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18 | const preserve = 'preserve' in Object(opts) ? opts.preserve : true;
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19 | return root => {
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20 | root.walkAtRules(mediaRegExp, atRule => {
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21 | const params = atRule.params;
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22 | const altParams = params.replace(prefersInterfaceRegExp, prefersInterfaceReplacer);
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23 |
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24 | if (params !== altParams) {
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25 | if (preserve) {
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26 | atRule.cloneBefore({
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27 | params: altParams
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28 | });
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29 | } else {
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30 | atRule.params = altParams;
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31 | }
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32 | }
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33 | });
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34 | };
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35 | });
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36 |
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37 | module.exports = postcss$1;
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