25 lines
616 B
JavaScript
25 lines
616 B
JavaScript
/**
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* Given a Path and a key, return a new Path containing the new key.
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*/
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export function addPath(prev, key, typename) {
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return { prev, key, typename };
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}
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/**
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* Given a Path, return an Array of the path keys.
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*/
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export function pathToArray(path) {
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const flattened = [];
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let curr = path;
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while (curr) {
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flattened.push(curr.key);
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curr = curr.prev;
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}
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return flattened.reverse();
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}
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/**
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* Build a string describing the path.
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*/
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export function printPathArray(path) {
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return path.map(key => (typeof key === 'number' ? '[' + key.toString() + ']' : '.' + key)).join('');
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}
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