parameterize the sorting algorithm in resolveCollisions() about d3-sankey HOT 4 CLOSED

In function resolveCollisions(), like this :

    function resolveCollisions() {
      nodesByDepth.forEach(function(nodes) {
        var node,
            dy,
            y = y0,
            n = nodes.length,
            i;

        // Push any overlapping nodes down.
        // ORIG : nodes.sort(ascendingBreadth);
        // MODIFIED LINE BELOW :
        nodes.sort(function(a, b){return a.name < b.name ? -1 : a.name > b.name ? 1 : 0;});

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@damil , could you provide me an example of where and how you did this? I need to sort alphabetically (A higher than B, higher than C, etc.).

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I just ran into a situation where disabling/altering the sorting would be super useful.

EDIT: seems like this pull would fix this: #53

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You can now use sankey.nodeSort(null) to disable automatic reordering of nodes within the columns and preserve the input order.

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