Function shouldUse

build-system/compile/json-schema/index.js:41–55

(schema)

    fn: 'isIso4217CurrencyCode',
    error: {message: 'must be a valid ISO 4217 currency code'},
    shouldUse(schema) {
      if (!iso4217DescriptionRe.test(schema.description)) {
        return false;
      }
      if (
        !Array.isArray(schema.enum) ||
        JSON.stringify(schema.enum.sort()) !== JSON.stringify(iso4217.sort())
      ) {
        throw new Error(
          'ISO 4217 schema must contain an `enum` keyword including all valid currency codes.'
        );
      }
      delete schema.enum;
      return true;
    },
  },
];