92 lines
3.2 KiB
JavaScript
92 lines
3.2 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = isCurrency;
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var _merge = require('./util/merge');
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var _merge2 = _interopRequireDefault(_merge);
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var _assertString = require('./util/assertString');
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var _assertString2 = _interopRequireDefault(_assertString);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function currencyRegex(options) {
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var decimal_digits = '\\d{' + options.digits_after_decimal[0] + '}';
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options.digits_after_decimal.forEach(function (digit, index) {
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if (index !== 0) decimal_digits = decimal_digits + '|\\d{' + digit + '}';
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});
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var symbol = '(\\' + options.symbol.replace(/\./g, '\\.') + ')' + (options.require_symbol ? '' : '?'),
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negative = '-?',
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whole_dollar_amount_without_sep = '[1-9]\\d*',
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whole_dollar_amount_with_sep = '[1-9]\\d{0,2}(\\' + options.thousands_separator + '\\d{3})*',
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valid_whole_dollar_amounts = ['0', whole_dollar_amount_without_sep, whole_dollar_amount_with_sep],
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whole_dollar_amount = '(' + valid_whole_dollar_amounts.join('|') + ')?',
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decimal_amount = '(\\' + options.decimal_separator + '(' + decimal_digits + '))' + (options.require_decimal ? '' : '?');
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var pattern = whole_dollar_amount + (options.allow_decimal || options.require_decimal ? decimal_amount : '');
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// default is negative sign before symbol, but there are two other options (besides parens)
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if (options.allow_negatives && !options.parens_for_negatives) {
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if (options.negative_sign_after_digits) {
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pattern += negative;
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} else if (options.negative_sign_before_digits) {
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pattern = negative + pattern;
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}
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}
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// South African Rand, for example, uses R 123 (space) and R-123 (no space)
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if (options.allow_negative_sign_placeholder) {
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pattern = '( (?!\\-))?' + pattern;
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} else if (options.allow_space_after_symbol) {
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pattern = ' ?' + pattern;
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} else if (options.allow_space_after_digits) {
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pattern += '( (?!$))?';
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}
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if (options.symbol_after_digits) {
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pattern += symbol;
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} else {
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pattern = symbol + pattern;
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}
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if (options.allow_negatives) {
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if (options.parens_for_negatives) {
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pattern = '(\\(' + pattern + '\\)|' + pattern + ')';
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} else if (!(options.negative_sign_before_digits || options.negative_sign_after_digits)) {
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pattern = negative + pattern;
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}
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}
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// ensure there's a dollar and/or decimal amount, and that
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// it doesn't start with a space or a negative sign followed by a space
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return new RegExp('^(?!-? )(?=.*\\d)' + pattern + '$');
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}
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var default_currency_options = {
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symbol: '$',
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require_symbol: false,
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allow_space_after_symbol: false,
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symbol_after_digits: false,
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allow_negatives: true,
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parens_for_negatives: false,
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negative_sign_before_digits: false,
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negative_sign_after_digits: false,
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allow_negative_sign_placeholder: false,
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thousands_separator: ',',
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decimal_separator: '.',
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allow_decimal: true,
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require_decimal: false,
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digits_after_decimal: [2],
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allow_space_after_digits: false
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};
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function isCurrency(str, options) {
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(0, _assertString2.default)(str);
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options = (0, _merge2.default)(options, default_currency_options);
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return currencyRegex(options).test(str);
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}
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module.exports = exports['default'];
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