Atualizado

node_modules/moment/src/lib/duration/create.js

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+import { Duration, isDuration } from './constructor';
+import isNumber from '../utils/is-number';
+import toInt from '../utils/to-int';
+import absRound from '../utils/abs-round';
+import hasOwnProp from '../utils/has-own-prop';
+import { DATE, HOUR, MINUTE, SECOND, MILLISECOND } from '../units/constants';
+import { cloneWithOffset } from '../units/offset';
+import { createLocal } from '../create/local';
+import { createInvalid as invalid } from './valid';
+
+// ASP.NET json date format regex
+var aspNetRegex = /^(-|\+)?(?:(\d*)[. ])?(\d+):(\d+)(?::(\d+)(\.\d*)?)?$/,
+    // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
+    // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
+    // and further modified to allow for strings containing both week and day
+    isoRegex =
+        /^(-|\+)?P(?:([-+]?[0-9,.]*)Y)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)W)?(?:([-+]?[0-9,.]*)D)?(?:T(?:([-+]?[0-9,.]*)H)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)S)?)?$/;
+
+export function createDuration(input, key) {
+    var duration = input,
+        // matching against regexp is expensive, do it on demand
+        match = null,
+        sign,
+        ret,
+        diffRes;
+
+    if (isDuration(input)) {
+        duration = {
+            ms: input._milliseconds,
+            d: input._days,
+            M: input._months,
+        };
+    } else if (isNumber(input) || !isNaN(+input)) {
+        duration = {};
+        if (key) {
+            duration[key] = +input;
+        } else {
+            duration.milliseconds = +input;
+        }
+    } else if ((match = aspNetRegex.exec(input))) {
+        sign = match[1] === '-' ? -1 : 1;
+        duration = {
+            y: 0,
+            d: toInt(match[DATE]) * sign,
+            h: toInt(match[HOUR]) * sign,
+            m: toInt(match[MINUTE]) * sign,
+            s: toInt(match[SECOND]) * sign,
+            ms: toInt(absRound(match[MILLISECOND] * 1000)) * sign, // the millisecond decimal point is included in the match
+        };
+    } else if ((match = isoRegex.exec(input))) {
+        sign = match[1] === '-' ? -1 : 1;
+        duration = {
+            y: parseIso(match[2], sign),
+            M: parseIso(match[3], sign),
+            w: parseIso(match[4], sign),
+            d: parseIso(match[5], sign),
+            h: parseIso(match[6], sign),
+            m: parseIso(match[7], sign),
+            s: parseIso(match[8], sign),
+        };
+    } else if (duration == null) {
+        // checks for null or undefined
+        duration = {};
+    } else if (
+        typeof duration === 'object' &&
+        ('from' in duration || 'to' in duration)
+    ) {
+        diffRes = momentsDifference(
+            createLocal(duration.from),
+            createLocal(duration.to)
+        );
+
+        duration = {};
+        duration.ms = diffRes.milliseconds;
+        duration.M = diffRes.months;
+    }
+
+    ret = new Duration(duration);
+
+    if (isDuration(input) && hasOwnProp(input, '_locale')) {
+        ret._locale = input._locale;
+    }
+
+    if (isDuration(input) && hasOwnProp(input, '_isValid')) {
+        ret._isValid = input._isValid;
+    }
+
+    return ret;
+}
+
+createDuration.fn = Duration.prototype;
+createDuration.invalid = invalid;
+
+function parseIso(inp, sign) {
+    // We'd normally use ~~inp for this, but unfortunately it also
+    // converts floats to ints.
+    // inp may be undefined, so careful calling replace on it.
+    var res = inp && parseFloat(inp.replace(',', '.'));
+    // apply sign while we're at it
+    return (isNaN(res) ? 0 : res) * sign;
+}
+
+function positiveMomentsDifference(base, other) {
+    var res = {};
+
+    res.months =
+        other.month() - base.month() + (other.year() - base.year()) * 12;
+    if (base.clone().add(res.months, 'M').isAfter(other)) {
+        --res.months;
+    }
+
+    res.milliseconds = +other - +base.clone().add(res.months, 'M');
+
+    return res;
+}
+
+function momentsDifference(base, other) {
+    var res;
+    if (!(base.isValid() && other.isValid())) {
+        return { milliseconds: 0, months: 0 };
+    }
+
+    other = cloneWithOffset(other, base);
+    if (base.isBefore(other)) {
+        res = positiveMomentsDifference(base, other);
+    } else {
+        res = positiveMomentsDifference(other, base);
+        res.milliseconds = -res.milliseconds;
+        res.months = -res.months;
+    }
+
+    return res;
+}