26 lines
522 B
JavaScript
26 lines
522 B
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const SAFE_IDENTIFIER = /^[_a-zA-Z$][_a-zA-Z$0-9]*$/;
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const propertyAccess = (properties, start = 0) => {
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let str = "";
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for (let i = start; i < properties.length; i++) {
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const p = properties[i];
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if (`${+p}` === p) {
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str += `[${p}]`;
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} else if (SAFE_IDENTIFIER.test(p)) {
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str += `.${p}`;
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} else {
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str += `[${JSON.stringify(p)}]`;
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}
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}
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return str;
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};
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module.exports = propertyAccess;
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