day.js patch for @formatjs/Intl polyfill

Readme.md

What is this?

Custom patch for dayjs@1.9.6, should work on later version untill iamkun/dayjs#1377 resolved.

Patches resolves compatability issue between dayjs timezone plugin and https://formatjs.io/docs/polyfills

How to use?

use https://www.npmjs.com/package/patch-package

dayjs+1.9.6.patch

diff --git a/node_modules/dayjs/index.d.ts b/node_modules/dayjs/index.d.ts
index fcc9f4c..764cd6f 100644
--- a/node_modules/dayjs/index.d.ts
+++ b/node_modules/dayjs/index.d.ts
@@ -406,7 +406,8 @@ declare namespace dayjs {
 
   export function extend<T = unknown>(plugin: PluginFunc<T>, option?: T): Dayjs
 
-  export function locale(preset?: string | ILocale, object?: Partial<ILocale>, isLocal?: boolean): string
+  // prevent unexpected global locale manipulations
+  // export function locale(preset?: string | ILocale, object?: Partial<ILocale>, isLocal?: boolean): string
 
   export function isDayjs(d: any): d is Dayjs
 
diff --git a/node_modules/dayjs/plugin/timezone.js b/node_modules/dayjs/plugin/timezone.js
index f5890df..190ec35 100644
--- a/node_modules/dayjs/plugin/timezone.js
+++ b/node_modules/dayjs/plugin/timezone.js
@@ -1 +1,105 @@
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.dayjs_plugin_timezone=e()}(this,function(){"use strict";var t={year:0,month:1,day:2,hour:3,minute:4,second:5},e={};return function(n,i,o){var r,u=o().utcOffset(),a=function(t,n,i){void 0===i&&(i={});var o=new Date(t);return function(t,n){void 0===n&&(n={});var i=n.timeZoneName||"short",o=t+"|"+i,r=e[o];return r||(r=new Intl.DateTimeFormat("en-US",{hour12:!1,timeZone:t,year:"numeric",month:"2-digit",day:"2-digit",hour:"2-digit",minute:"2-digit",second:"2-digit",timeZoneName:i}),e[o]=r),r}(n,i).formatToParts(o)},f=function(e,n){for(var i=a(e,n),r=[],u=0;u<i.length;u+=1){var f=i[u],s=f.type,m=f.value,c=t[s];c>=0&&(r[c]=parseInt(m,10))}var d=r[3],v=24===d?0:d,h=r[0]+"-"+r[1]+"-"+r[2]+" "+v+":"+r[4]+":"+r[5]+":000",l=+e;return(o.utc(h).valueOf()-(l-=l%1e3))/6e4},s=i.prototype;s.tz=function(t,e){void 0===t&&(t=r);var n=this.utcOffset(),i=this.toDate().toLocaleString("en-US",{timeZone:t}),a=Math.round((this.toDate()-new Date(i))/1e3/60),f=o(i).$set("millisecond",this.$ms).utcOffset(u-a,!0);if(e){var s=f.utcOffset();f=f.add(n-s,"minute")}return f.$x.$timezone=t,f},s.offsetName=function(t){var e=this.$x.$timezone||o.tz.guess(),n=a(this.valueOf(),e,{timeZoneName:t}).find(function(t){return"timezonename"===t.type.toLowerCase()});return n&&n.value},o.tz=function(t,e,n){var i=n&&e,u=n||e||r,a=f(+o(),u);if("string"!=typeof t)return o(t).tz(u);var s=function(t,e,n){var i=t-60*e*1e3,o=f(i,n);if(e===o)return[i,e];var r=f(i-=60*(o-e)*1e3,n);return o===r?[i,o]:[t-60*Math.min(o,r)*1e3,Math.max(o,r)]}(o.utc(t,i).valueOf(),a,u),m=s[0],c=s[1],d=o(m).utcOffset(c);return d.$x.$timezone=u,d},o.tz.guess=function(){return Intl.DateTimeFormat().resolvedOptions().timeZone},o.tz.setDefault=function(t){r=t}}});
+!function(t, e) {
+    "object" == typeof exports && "undefined" != typeof module ? module.exports = e() : "function" == typeof define && define.amd ? define(e) : t.dayjs_plugin_timezone = e()
+}(this, function() {
+    "use strict";
+    var t = {
+            year: 0,
+            month: 1,
+            day: 2,
+            hour: 3,
+            minute: 4,
+            second: 5
+        },
+        e = {};
+    return function(n, i, o) {
+        var r, u = o().utcOffset(),
+            a = function(t, n, i) {
+                void 0 === i && (i = {});
+                var o = new Date(t);
+                return function(t, n) {
+                    void 0 === n && (n = {});
+                    var i = n.timeZoneName || "short",
+                        o = t + "|" + i,
+                        r = e[o];
+                    return r || (r = new Intl.DateTimeFormat("en-US", {
+                        hour12: !1,
+                        timeZone: t,
+                        year: "numeric",
+                        month: "2-digit",
+                        day: "2-digit",
+                        hour: "2-digit",
+                        minute: "2-digit",
+                        second: "2-digit",
+                        timeZoneName: i
+                    }), e[o] = r), r
+                }(n, i).formatToParts(o)
+            },
+            f = function(e, n) {
+                for (var i = a(e, n), r = [], u = 0; u < i.length; u += 1) {
+                    var f = i[u],
+                        s = f.type,
+                        m = f.value,
+                        c = t[s];
+                    c >= 0 && (r[c] = parseInt(m, 10))
+                }
+                var d = r[3],
+                    v = 24 === d ? 0 : d,
+                    h = r[0] + "-" + r[1] + "-" + r[2] + " " + v + ":" + r[4] + ":" + r[5] + ":000",
+                    l = +e;
+                return (o.utc(h).valueOf() - (l -= l % 1e3)) / 6e4
+            },
+            s = i.prototype;
+        s.tz = function(t, e) {
+            void 0 === t && (t = r);
+            var n = this.utcOffset(),
+                // HACK https://github.com/iamkun/dayjs/issues/1377
+                i = Intl.DateTimeFormat('en-us', {
+                    year: 'numeric',
+                    month: '2-digit',
+                    day: '2-digit',
+                    hour: '2-digit',
+                    minute: '2-digit',
+                    second: '2-digit',
+                    hour12: false,
+                    timeZone: t,
+                })
+                .format(this.toDate())
+                .replace(/(\d{2})\/(\d{2})\/(\d{4}),/g, '$3-$1-$2'),
+                a = Math.round((this.toDate() - new Date(i)) / 1e3 / 60),
+                f = o(i).$set("millisecond", this.$ms).utcOffset(u - a, !0);
+            if (e) {
+                var s = f.utcOffset();
+                f = f.add(n - s, "minute")
+            }
+            return f.$x.$timezone = t, f
+        }, s.offsetName = function(t) {
+            var e = this.$x.$timezone || o.tz.guess(),
+                n = a(this.valueOf(), e, {
+                    timeZoneName: t
+                }).find(function(t) {
+                    return "timezonename" === t.type.toLowerCase()
+                });
+            return n && n.value
+        }, o.tz = function(t, e, n) {
+            var i = n && e,
+                u = n || e || r,
+                a = f(+o(), u);
+            if ("string" != typeof t) return o(t).tz(u);
+            var s = function(t, e, n) {
+                    var i = t - 60 * e * 1e3,
+                        o = f(i, n);
+                    if (e === o) return [i, e];
+                    var r = f(i -= 60 * (o - e) * 1e3, n);
+                    return o === r ? [i, o] : [t - 60 * Math.min(o, r) * 1e3, Math.max(o, r)]
+                }(o.utc(t, i).valueOf(), a, u),
+                m = s[0],
+                c = s[1],
+                d = o(m).utcOffset(c);
+            return d.$x.$timezone = u, d
+        }, o.tz.guess = function() {
+            return Intl.DateTimeFormat().resolvedOptions().timeZone
+        }, o.tz.setDefault = function(t) {
+            r = t
+        }
+    }
+});
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