parse-ingredient

parse-ingredient

Parses a string, which can include mixed numbers or vulgar fractions (thanks to numeric-quantity), into an array of ingredient objects with the following signature:

interface Ingredient {
  /**
   * The primary quantity (the lower quantity in a range, if applicable)
   */
  quantity: number;
  /**
   * The secondary quantity (the upper quantity in a range or `0` if not applicable)
   */
  quantity2: number;
  /**
   * The unit of measure
   */
  unitOfMeasure: string;
  /**
   * The description
   */
  description: string;
  /**
   * Whether the "ingredient" is actually a group header, e.g. "For icing:"
   */
  isGroupHeader: boolean;
}

For the isGroupHeader attribute to be true, the ingredient string must not start with a number, and must either start with 'For' or end with ':'.

This library pairs nicely with format-quantity which can display numeric values as imperial measurements (e.g. '1 1/2' instead of 1.5).

Installation

npm

# npm
npm i parse-ingredient

# yarn
yarn add parse-ingredient

Browser

In the browser, available as a global function parseIngredient. Remember to first include numeric-quantity.

<script src="https://unpkg.com/numeric-quantity"></script>
<script src="https://unpkg.com/parse-ingredient"></script>
<script>
  console.log(parseIngredient('1 1/2 cups sugar'));
  /**
   * [
   *   {
   *     quantity: 1.5,
   *     quantity2: null,
   *     unitOfMeasure: 'cups',
   *     description: 'sugar',
   *     isGroupHeader: false,
   *   }
   * ]
   */
</script>

Usage

import parseIngredient from 'parse-ingredient';

console.log(parseIngredient('1-2 pears'));
/**
 * [
 *   {
 *     quantity: 1,
 *     quantity2: 2,
 *     unitOfMeasure: null,
 *     description: 'pears',
 *     isGroupHeader: false,
 *   }
 * ]
 */
console.log(
  parseIngredient(
    `2/3 cup flour
1 tsp baking powder`
  )
);
/**
 * [
 *   {
 *     quantity: 0.666,
 *     quantity2: null,
 *     unitOfMeasure: 'cup',
 *     description: 'flour',
 *     isGroupHeader: false,
 *   },
 *   {
 *     quantity: 1,
 *     quantity2: null,
 *     unitOfMeasure: 'tsp',
 *     description: 'baking powder',
 *     isGroupHeader: false,
 *   },
 * ]
 */
console.log(parseIngredient('For cake:'));
/**
 * [
 *   {
 *     quantity: null,
 *     quantity2: null,
 *     unitOfMeasure: null,
 *     description: 'For cake:',
 *     isGroupHeader: true,
 *   }
 * ]
 */

Changelog

[v0.1.2] - 2021-02-11

Changed

• Ignore blank lines in multi-line input.

Fixed

• Updated package.json to include URLs.
• Increased test coverage to 100%.