Edge transforms only work with no explicit inputs

[joshowens-basis]

I have a simple blueprint with three nodes, where the last node takes in the output of the first node, like so:

const blueprint: WorkflowBlueprint = {
  id: 'simple-workflow',
  nodes: [
    { id: 'start', uses: 'start-node' },
    { id: 'middle', uses: 'middle-node' },
    { id: 'end', uses: 'end-node', inputs: 'start' }
  ],
  edges: [
    { source: 'start', target: 'middle' },
    { source: 'middle', target: 'end' }
  ]
};

I'd like to transform the input to only capture a deeply nested value in the input using an edge transform:

const blueprint: WorkflowBlueprint = {
  id: 'simple-workflow',
  nodes: [
    { id: 'start', uses: 'start-node' },
    { id: 'middle', uses: 'middle-node' },
    { id: 'end', uses: 'end-node', inputs: 'start' }
  ],
  edges: [
    { source: 'start', target: 'middle' },
    { source: 'middle', target: 'end', transform: 'input.deeply.nested.value' }
  ]
};

However, the transform is getting ignored.

[joshowens-basis]

I figured out a workaround using middleware to get the transform to work:

const middleware: Middleware[] = [
  {
    async afterNode(ctx, nodeId, result) {
      if (result) {
        await ctx.set(`${nodeId}_output`, result?.output);
      }
    }
  }
];

const blueprint: WorkflowBlueprint = {
  id: 'simple-workflow',
  nodes: [
    { id: 'start', uses: 'start-node' },
    { id: 'middle', uses: 'middle-node' },
    { id: 'end', uses: 'end-node' }
  ],
  edges: [
    { source: 'start', target: 'middle' },
    { source: 'middle', target: 'end', transform: 'context.start_output.deeply.nested.value' }
  ]
};

Definitely not ideal, but it works - I really like this library btw, it looks like it could be a plug-and-play solution to allow us to scale our current dynamic scripting capabilities. Looking at the code, it looks like the fix for this could just be to change this line to a call to resolveNodeInput, but I could be wrong.