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Add a general walk method that has both a pre and post visit callback #1

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Add a general walk method that has both a pre and post visit callback #1

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10 changes: 10 additions & 0 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -223,6 +223,16 @@ extend(Walker.prototype, {
walkImpl(obj, traversalStrategy, visitor, null, context);
},

// Recursively traverses `obj` in a depth-first fashion, invoking the
// `preVisitor` function for each object before traversing its children
// and the `postVisitor` function after traversing its children
// `traversalStrategy` is intended for internal callers, and is not part
// of the public API.
walk: function(obj, preVisitor, postVisitor, context, traversalStrategy) {
traversalStrategy = traversalStrategy || this._traversalStrategy;
walkImpl(obj, traversalStrategy, preVisitor, postVisitor, context);
},

// Builds up a single value by doing a post-order traversal of `obj` and
// calling the `visitor` function on each object in the tree. For leaf
// objects, the `memo` argument to `visitor` is the value of the `leafMemo`
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