Transformation Functions

A transformation function is a function that you define of how we should transform a field before sending it to you. Each function should live in its own file inside of the amp directory. See Define integrations for the directory structure.

We support TypeScript transformation functions. Each file must export a single main function that takes in an input parameter and returns an output, which represents the transformed field. The type signature of the function must indicate the return type. Below is a sample transformation function which removes the "http" and "https" prefixes in URLs.

// removeHttpPrefix.ts
export const main = (input: string): string => {
  // input: ""
  const parts = input.split('//');
  // parts: ["https:", ""]
  // return last element
  return parts[parts.length-1];


On the roadmap

Support for Python and Ruby.