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Last change
on this file since 6a3a178 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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File size:
522 bytes
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| 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Tobias Koppers @sokra
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| 4 | */
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| 5 |
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| 6 | "use strict";
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| 7 |
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| 8 | const SAFE_IDENTIFIER = /^[_a-zA-Z$][_a-zA-Z$0-9]*$/;
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| 9 |
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| 10 | const propertyAccess = (properties, start = 0) => {
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| 11 | let str = "";
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| 12 | for (let i = start; i < properties.length; i++) {
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| 13 | const p = properties[i];
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| 14 | if (`${+p}` === p) {
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| 15 | str += `[${p}]`;
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| 16 | } else if (SAFE_IDENTIFIER.test(p)) {
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| 17 | str += `.${p}`;
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| 18 | } else {
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| 19 | str += `[${JSON.stringify(p)}]`;
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| 20 | }
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| 21 | }
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| 22 | return str;
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| 23 | };
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| 24 |
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| 25 | module.exports = propertyAccess;
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