feat: steps system infra

packages/hoppscotch-app/helpers/import-export/steps.ts

@@ -0,0 +1,40 @@
+/**
+ * Defines which type of content a Step returns.
+ * Add an entry here when you define a step
+ */
+export type StepReturnTypes = {
+  FILE_OR_URL_IMPORT: string // String content of the file/url
+  TARGET_MY_COLLECTION: number // folderPath
+}
+
+/**
+ * Defines what the data structure of a step
+ */
+export type Step<T extends keyof StepReturnTypes> = {
+  name: T
+  caption?: string
+}
+
+/**
+ * The return output value of an individual step
+ */
+export type StepReturnType<T> = T extends Step<infer U>
+  ? StepReturnTypes[U]
+  : never
+
+/**
+ * Defines the value of the output list generated by a step
+ */
+export type StepsOutputList<T> = {
+  [K in keyof T]: StepReturnType<T[K]>
+}
+
+/** Use this function to define a step */
+export const step = <T extends keyof StepReturnTypes>(
+  stepName: T,
+  caption?: string
+) =>
+  <Step<T>>{
+    name: stepName,
+    caption,
+  }