Function helper

implemented with raw invokeHelper API, no classes from ember-resources used.

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Enables the use of template-helpers in JavaScript

Note that it should be preferred to use regular functions in javascript whenever possible, as the runtime cost of "things as resources" is non-0. For example, if using @ember/component/helper utilities, it's a common p practice to split the actual behavior from the framework construct

export function plainJs() {}

export default helper(() => plainJs())

so in this case plainJs can be used separately.

This differentiation makes less of a difference since plain functions as helpers will be supported soon.

Example

import intersect from 'ember-composable-helpers/addon/helpers/intersect';

import { helper } from 'ember-resources/util/helper';

class Demo {
  @tracked listA = [...];
  @tracked listB = [...]

  intersection = helper(this, intersect, () => [this.listA, this.listB])

  toString = (array) => array.join(', ');
}

{{this.toString this.intersection.value}}