isCurrency.js
3.37 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = isCurrency;
var _merge = _interopRequireDefault(require("./util/merge"));
var _assertString = _interopRequireDefault(require("./util/assertString"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function currencyRegex(options) {
var decimal_digits = "\\d{".concat(options.digits_after_decimal[0], "}");
options.digits_after_decimal.forEach(function (digit, index) {
if (index !== 0) decimal_digits = "".concat(decimal_digits, "|\\d{").concat(digit, "}");
});
var symbol = "(\\".concat(options.symbol.replace(/\./g, '\\.'), ")").concat(options.require_symbol ? '' : '?'),
negative = '-?',
whole_dollar_amount_without_sep = '[1-9]\\d*',
whole_dollar_amount_with_sep = "[1-9]\\d{0,2}(\\".concat(options.thousands_separator, "\\d{3})*"),
valid_whole_dollar_amounts = ['0', whole_dollar_amount_without_sep, whole_dollar_amount_with_sep],
whole_dollar_amount = "(".concat(valid_whole_dollar_amounts.join('|'), ")?"),
decimal_amount = "(\\".concat(options.decimal_separator, "(").concat(decimal_digits, "))").concat(options.require_decimal ? '' : '?');
var pattern = whole_dollar_amount + (options.allow_decimal || options.require_decimal ? decimal_amount : ''); // default is negative sign before symbol, but there are two other options (besides parens)
if (options.allow_negatives && !options.parens_for_negatives) {
if (options.negative_sign_after_digits) {
pattern += negative;
} else if (options.negative_sign_before_digits) {
pattern = negative + pattern;
}
} // South African Rand, for example, uses R 123 (space) and R-123 (no space)
if (options.allow_negative_sign_placeholder) {
pattern = "( (?!\\-))?".concat(pattern);
} else if (options.allow_space_after_symbol) {
pattern = " ?".concat(pattern);
} else if (options.allow_space_after_digits) {
pattern += '( (?!$))?';
}
if (options.symbol_after_digits) {
pattern += symbol;
} else {
pattern = symbol + pattern;
}
if (options.allow_negatives) {
if (options.parens_for_negatives) {
pattern = "(\\(".concat(pattern, "\\)|").concat(pattern, ")");
} else if (!(options.negative_sign_before_digits || options.negative_sign_after_digits)) {
pattern = negative + pattern;
}
} // ensure there's a dollar and/or decimal amount, and that
// it doesn't start with a space or a negative sign followed by a space
return new RegExp("^(?!-? )(?=.*\\d)".concat(pattern, "$"));
}
var default_currency_options = {
symbol: '$',
require_symbol: false,
allow_space_after_symbol: false,
symbol_after_digits: false,
allow_negatives: true,
parens_for_negatives: false,
negative_sign_before_digits: false,
negative_sign_after_digits: false,
allow_negative_sign_placeholder: false,
thousands_separator: ',',
decimal_separator: '.',
allow_decimal: true,
require_decimal: false,
digits_after_decimal: [2],
allow_space_after_digits: false
};
function isCurrency(str, options) {
(0, _assertString.default)(str);
options = (0, _merge.default)(options, default_currency_options);
return currencyRegex(options).test(str);
}
module.exports = exports.default;
module.exports.default = exports.default;