27 lines
739 B
Plaintext
27 lines
739 B
Plaintext
/**
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* Parse a path string into an array of path segments.
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*
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* Square bracket notation `a[b]` may be used to "escape" dots that would otherwise be interpreted as path separators.
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*
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* Example:
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* a -> ['a']
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* a.b.c -> ['a', 'b', 'c']
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* a[b].c -> ['a', 'b', 'c']
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* a[b.c].e.f -> ['a', 'b.c', 'e', 'f']
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* a[b][c][d] -> ['a', 'b', 'c', 'd']
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*
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* @param {string|string[]} path
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**/
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export function toPath(path) {
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if (Array.isArray(path)) return path
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let openBrackets = path.split('[').length - 1
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let closedBrackets = path.split(']').length - 1
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if (openBrackets !== closedBrackets) {
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throw new Error(`Path is invalid. Has unbalanced brackets: ${path}`)
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}
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return path.split(/\.(?![^\[]*\])|[\[\]]/g).filter(Boolean)
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}
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