sourcing plain JavaScript objects from .js files

[kimbaudi]

So far, I have been using gatsby-transformer-json plugin to source data from JSON in .json files. But I would much rather source data from plain JS objects in .js files.

Is it possible to source data from .js file?

So instead of using gatsby-transformer-json to source letters.json

[{ "value": "a" }, { "value": "b" }, { "value": "c" }]

I would like to source letters.js (preferably es6 module, since I can use esm to backport it to commonjs module for use in gatsby-node.js

export const letters = [{value: 'a'}, {value: 'b'}, {value: 'c'}]