Matthew Hively matthewhively
matthewhively
/ is_promise_like.js
Created
July 12, 2022 00:29
Test if can function as a promise. Copied from paypal sdk/js for subscriptions
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| function is_promise_like(n) { | |
| try { | |
| if (!n) | |
| {cl('falsy'); return !1; } | |
| if ("undefined" != typeof Promise && n instanceof Promise) | |
| {cl('is Promise (ok)'); return !0; } | |
| if ("undefined" != typeof window && "function" == typeof window.Window && n instanceof window.Window) | |
| {cl('is Window'); return !1; } | |
| if ("undefined" != typeof window && "function" == typeof window.constructor && n instanceof window.constructor) | |
| {cl('is constructor'); return !1; } |