@jplorg/jpl/src/program/ops/opCalculation/opmDivision.js

JPL interpreter

import { JPLTypeError, JPLZeroDivisionError } from '../../../library';
import { call } from '../utils';

export default {
  /** { by: [op] } */
  op(runtime, input, target, params, scope, next) {
    return runtime.executeInstructions(params.by ?? [], [input], scope, async (by) =>
      next(
        await runtime.alterValue(target, (a) => {
          const b = runtime.unwrapValue(by);

          const ta = runtime.type(a);
          const tb = runtime.type(b);

          switch (ta) {
            case 'number':
              if (tb === 'number') {
                if (b === 0) {
                  throw new JPLZeroDivisionError('%s (%*<100v) cannot be divided by zero', ta, a);
                }
                return a / b;
              }
              break;

            case 'string':
              if (tb === 'string') {
                if (b === '') return [...a];
                return a.split(b);
              }
              break;

            default:
          }

          throw new JPLTypeError('%s (%*<100v) cannot be divided by %s (%*<100v)', ta, a, tb, b);
        }),
      ),
    );
  },

  /** { by: function } */
  map(runtime, params) {
    return {
      by: call(params.by),
    };
  },
};