| 1 | const
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| 2 | maths = require('mathjs');
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| 3 |
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| 4 | class MathJs {
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| 5 |
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| 6 | static resolve(argString) {
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| 7 |
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| 8 | let unit = '';
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| 9 | const
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| 10 | expr = /(-?(0\.|[1-9\.])+[0-9\.]*(px|em|ex|ch|rem|pt|vh|vw|vmin|vmax)?( |\+|-|\*|\/)*)+/g,
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| 11 | matches = argString.match(expr);
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| 12 |
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| 13 | if (matches !== null) {
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| 14 | matches.map((match) => {
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| 15 |
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| 16 | const
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| 17 | number = match.replace(/([a-zA-Z]+)/g, ''),
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| 18 | [unit] = match.match(/([a-zA-Z])+/) || [''];
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| 19 |
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| 20 | try {
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| 21 | const resolved = maths.eval(number);
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| 22 | argString = argString.replace(match, resolved+unit);
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| 23 | }
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| 24 | catch(err) {
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| 25 | console.log(err);
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| 26 | }
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| 27 | });
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| 28 | }
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| 29 |
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| 30 | return argString;
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| 31 | }
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| 32 | }
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| 33 |
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| 34 | module.exports = MathJs; |
| \ | No newline at end of file |