@yodata/context-sdk/lib/transform/index.js

tools for developing and publishing yodata-context (cdef.yaml) files.

const assert = require('assert-plus')
const { Context, mapAsync } = require('@yodata/transform')
const viewPlugin = require('@yodata/transform-plugin-view')
const loadData = require('../util/load-data')

module.exports = transform

/**
 * Transforms data at datapath with context at filepath
 *
 * @param {object} props
 * @param {string} props.datapath - path to data
 * @param {string} [props.filepath] - path to context definition file
 * @param {boolean} [props.inverse] - true for outbound (subscription) transformation
 * @returns
 */
async function transform ({ datapath, filepath, inverse = false }) {
  assert.string(datapath)
  assert.string(filepath)
  const data = await loadData(datapath)
  const contextdoc = await loadData(filepath)
  assert.object(data)
  assert.object(contextdoc)
  const context = new Context(contextdoc).use(viewPlugin)
  const result = await mapAsync(context)(data)
  console.dir(result, { deptch: 10 })
  return result
}