24 lines
725 B
JavaScript
24 lines
725 B
JavaScript
/*
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Note:
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1. `acorn` contains `RegExpValidationState` class with `.at` method (2 arguments)
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2. `postcss` contains `Container` class with `.at` method
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*/
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const at = (isOptionalObject, object, index) => {
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if (isOptionalObject && (object === undefined || object === null)) {
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return;
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}
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// "relative indexing" is not available in Node.js v14
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// `.at` method is slower than property access on Node.js v16 and v18, see #14396
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// Only checked arrays and strings, since we haven't use `TypedArray`, and the transform only works for sources
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if (Array.isArray(object) || typeof object === "string") {
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return object[index < 0 ? object.length + index : index];
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}
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return object.at(index);
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};
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export default at;
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