metaline

A tiny language to write mapping functions as strings.

Install

npm i metaline

Example syntax

The string where.id.in.$>#id;limit:99 generates the equivalent function of:

function transform (input) {
  return {
    where: {
      id: {
        in: input.map((i) => i.id)
      }
    },
    limit: 99
  }
}

The string $>id.#directoryId generates the equivalent function of:

function transform (input) {
  return input.map((t) => {
    return {
      id: t.directoryId
    }
  })
}

Language Tokens

• . separate properties in an object
• $ the input
• $> loop over the input
• # access the following input property

License

Apache-2.0