31 lines
657 B
JavaScript
31 lines
657 B
JavaScript
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// @ts-check
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/**
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* A node path is an array of indices that can traverse a Node tree.
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*
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* For example, given the following tree:
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*
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* ```javascript
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* {
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* name: "top",
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* children: [
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* { name: "first" },
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* { name: "second", children: [{ name: "grandchild" }] },
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* ],
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* }
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* ```
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*
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* `[]` is "top", `[0]` is "first", `[1]` is "second", and `[1, 0]` is "grandchild".
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*
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* @typedef {number[]} NodePath
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*/
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/**
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* @param {unknown} value
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* @returns {null | NodePath} The parsed node path, or null if invalid.
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*/
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export const parse = (value) => {
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if (typeof value !== "string") return null;
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return value.split(".").map(Number);
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};
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