feat: Implement draft version of the code execution app

packages/backend/src/apps/code/actions/run-javascript/index.js

@@ -0,0 +1,81 @@
+import defineAction from '../../../../helpers/define-action.js';
+
+export default defineAction({
+  name: 'Run Javascript',
+  key: 'runJavascript',
+  description:
+    'Run browser Javascript code. You can not use NodeJS specific features and npm packages.',
+  arguments: [
+    {
+      label: 'Inputs',
+      key: 'inputs',
+      type: 'dynamic',
+      required: false,
+      description:
+        'To be able to use data from previous steps, you need to expose them as input entries. You can access these input values in your code by using the `inputs` argument.',
+      value: [
+        {
+          key: '',
+          value: '',
+        },
+      ],
+      fields: [
+        {
+          label: 'Key',
+          key: 'key',
+          type: 'string',
+          required: true,
+          variables: true,
+        },
+        {
+          label: 'Value',
+          key: 'value',
+          type: 'string',
+          required: true,
+          variables: true,
+        },
+      ],
+    },
+    {
+      label: 'Code Snippet',
+      key: 'codeSnippet',
+      type: 'string',
+      required: true,
+      variables: false,
+      value: 'const code = async (inputs) => { return true; };',
+    },
+  ],
+
+  async run($) {
+    const { inputs = [], codeSnippet } = $.step.parameters;
+
+    const ivm = (await import('isolated-vm')).default;
+    const isolate = new ivm.Isolate({ memoryLimit: 128 });
+
+    try {
+      const context = await isolate.createContext();
+
+      const externalData = new ivm.ExternalCopy(inputs).copyInto();
+
+      const compiledCodeSnippet = await isolate.compileScript(codeSnippet);
+
+      const codeRun = await compiledCodeSnippet.run(context);
+
+      const codeFunction = await context.global.get('code', {
+        reference: true,
+        promise: true,
+      });
+
+      const result = await codeFunction.apply(undefined, [externalData], {});
+
+      // const codeReturn = await outRef.copy();
+      const codeReturn = await result.copy();
+
+      // console.log(codeReturn);
+
+      $.setActionItem({ raw: { output: codeReturn } });
+    } finally {
+      isolate.dispose();
+    }
+  },
+});