https://esdiscuss.org/topic/native-assertions
From: es-discuss <[email protected]> On Behalf Of kai zhu Sent: Saturday, August 31, 2019 2:22 PM To: es-discuss <[email protected]> Subject: globalThis.assertOrThrow having a universal assert function (similar to nodejs' assert builtin) might be useful. it could be name "assertOrThrow" for web-compat. this would simplify writing common-case "throwaway" error-handling behavior in both browsers and nodejs: ```js // naive polyfill globalThis.assertOrThrow = globalThis.assertOrThrow || function (passed, message) { /* * this function will throw error <message> if <passed> is falsy */ if (passed) { return; } throw ( typeof message === "object" && message ? message : new Error(message) } }; localforage.setItem("foo", "bar", function (err, data) { // validate no err occurred // this one-line statement makes writing test-coverage less tedious assertOrThrow(!err, err); ... }); ``` -kai
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