♻️ Export bot-engine code into its own package

packages/bot-engine/variables/extractVariablesFromText.ts

@@ -0,0 +1,19 @@
+import { Variable } from '@typebot.io/schemas'
+
+export const extractVariablesFromText =
+  (variables: Variable[]) =>
+  (text: string): Variable[] => {
+    const matches = [...text.matchAll(/\{\{(.*?)\}\}/g)]
+    return matches.reduce<Variable[]>((acc, match) => {
+      const variableName = match[1]
+      const variable = variables.find(
+        (variable) => variable.name === variableName
+      )
+      if (
+        !variable ||
+        acc.find((accVariable) => accVariable.id === variable.id)
+      )
+        return acc
+      return [...acc, variable]
+    }, [])
+  }