Port in echo component

core/src/components/utility/Echo.ts

@@ -0,0 +1,60 @@
+import Rete from 'rete'
+
+import {
+  EngineContext,
+  NodeData,
+  ThothNode,
+  ThothWorkerInputs,
+  ThothWorkerOutputs,
+} from '../../../types'
+import { triggerSocket, stringSocket } from '../../sockets'
+import { ThothComponent } from '../../thoth-component'
+
+const info = 'Returns the same output as the input'
+
+type WorkerReturn = {
+  output: string
+}
+
+export class Echo extends ThothComponent<Promise<WorkerReturn>> {
+  constructor() {
+    super('Echo')
+
+    this.task = {
+      outputs: {
+        output: 'output',
+        trigger: 'option',
+      },
+    }
+
+    this.category = 'Utility'
+    this.display = true
+    this.info = info
+  }
+
+  builder(node: ThothNode) {
+    const inp = new Rete.Input('string', 'String', stringSocket)
+    const dataInput = new Rete.Input('trigger', 'Trigger', triggerSocket, true)
+    const dataOutput = new Rete.Output('trigger', 'Trigger', triggerSocket)
+    const outp = new Rete.Output('output', 'String', stringSocket)
+
+    return node
+      .addInput(dataInput)
+      .addInput(inp)
+      .addOutput(dataOutput)
+      .addOutput(outp)
+  }
+
+  async worker(
+    node: NodeData,
+    inputs: ThothWorkerInputs,
+    outputs: ThothWorkerOutputs,
+    { silent, thoth }: { silent: boolean; thoth: EngineContext }
+  ) {
+    const input = inputs.string[0] as string
+
+    return {
+      output: input,
+    }
+  }
+}