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24 lines
569 B
24 lines
569 B
'use strict'; |
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exports.__esModule = true; |
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exports.default = function visit(node, keys, visitorSpec) { |
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if (!node || !keys) { |
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return; |
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} |
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const type = node.type; |
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if (typeof visitorSpec[type] === 'function') { |
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visitorSpec[type](node); |
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} |
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const childFields = keys[type]; |
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if (!childFields) { |
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return; |
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} |
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childFields.forEach((fieldName) => { |
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[].concat(node[fieldName]).forEach((item) => { |
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visit(item, keys, visitorSpec); |
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}); |
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}); |
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if (typeof visitorSpec[`${type}:Exit`] === 'function') { |
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visitorSpec[`${type}:Exit`](node); |
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} |
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};
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