source: trip-planner-front/node_modules/ms/index.js@ 6fe77af

Last change on this file since 6fe77af was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 3.0 KB
Line 
1/**
2 * Helpers.
3 */
4
5var s = 1000;
6var m = s * 60;
7var h = m * 60;
8var d = h * 24;
9var w = d * 7;
10var y = d * 365.25;
11
12/**
13 * Parse or format the given `val`.
14 *
15 * Options:
16 *
17 * - `long` verbose formatting [false]
18 *
19 * @param {String|Number} val
20 * @param {Object} [options]
21 * @throws {Error} throw an error if val is not a non-empty string or a number
22 * @return {String|Number}
23 * @api public
24 */
25
26module.exports = function(val, options) {
27 options = options || {};
28 var type = typeof val;
29 if (type === 'string' && val.length > 0) {
30 return parse(val);
31 } else if (type === 'number' && isFinite(val)) {
32 return options.long ? fmtLong(val) : fmtShort(val);
33 }
34 throw new Error(
35 'val is not a non-empty string or a valid number. val=' +
36 JSON.stringify(val)
37 );
38};
39
40/**
41 * Parse the given `str` and return milliseconds.
42 *
43 * @param {String} str
44 * @return {Number}
45 * @api private
46 */
47
48function parse(str) {
49 str = String(str);
50 if (str.length > 100) {
51 return;
52 }
53 var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(
54 str
55 );
56 if (!match) {
57 return;
58 }
59 var n = parseFloat(match[1]);
60 var type = (match[2] || 'ms').toLowerCase();
61 switch (type) {
62 case 'years':
63 case 'year':
64 case 'yrs':
65 case 'yr':
66 case 'y':
67 return n * y;
68 case 'weeks':
69 case 'week':
70 case 'w':
71 return n * w;
72 case 'days':
73 case 'day':
74 case 'd':
75 return n * d;
76 case 'hours':
77 case 'hour':
78 case 'hrs':
79 case 'hr':
80 case 'h':
81 return n * h;
82 case 'minutes':
83 case 'minute':
84 case 'mins':
85 case 'min':
86 case 'm':
87 return n * m;
88 case 'seconds':
89 case 'second':
90 case 'secs':
91 case 'sec':
92 case 's':
93 return n * s;
94 case 'milliseconds':
95 case 'millisecond':
96 case 'msecs':
97 case 'msec':
98 case 'ms':
99 return n;
100 default:
101 return undefined;
102 }
103}
104
105/**
106 * Short format for `ms`.
107 *
108 * @param {Number} ms
109 * @return {String}
110 * @api private
111 */
112
113function fmtShort(ms) {
114 var msAbs = Math.abs(ms);
115 if (msAbs >= d) {
116 return Math.round(ms / d) + 'd';
117 }
118 if (msAbs >= h) {
119 return Math.round(ms / h) + 'h';
120 }
121 if (msAbs >= m) {
122 return Math.round(ms / m) + 'm';
123 }
124 if (msAbs >= s) {
125 return Math.round(ms / s) + 's';
126 }
127 return ms + 'ms';
128}
129
130/**
131 * Long format for `ms`.
132 *
133 * @param {Number} ms
134 * @return {String}
135 * @api private
136 */
137
138function fmtLong(ms) {
139 var msAbs = Math.abs(ms);
140 if (msAbs >= d) {
141 return plural(ms, msAbs, d, 'day');
142 }
143 if (msAbs >= h) {
144 return plural(ms, msAbs, h, 'hour');
145 }
146 if (msAbs >= m) {
147 return plural(ms, msAbs, m, 'minute');
148 }
149 if (msAbs >= s) {
150 return plural(ms, msAbs, s, 'second');
151 }
152 return ms + ' ms';
153}
154
155/**
156 * Pluralization helper.
157 */
158
159function plural(ms, msAbs, n, name) {
160 var isPlural = msAbs >= n * 1.5;
161 return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
162}
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