es5-compliance

Installation

SKILL.md

ES5 Compliance for ServiceNow

ServiceNow runs on Mozilla Rhino engine which only supports ES5 JavaScript (2009 standard). All server-side scripts MUST use ES5 syntax.

ES6+ Syntax	ES5 Alternative
`const x = 5`	`var x = 5`
`let items = []`	`var items = []`
`() => {}`	`function() {}`
`Hello ${name}`	`'Hello ' + name`
`for (x of arr)`	`for (var i = 0; i < arr.length; i++)`
`{a, b} = obj`	`var a = obj.a; var b = obj.b;`
`[a, b] = arr`	`var a = arr[0]; var b = arr[1];`
`...spread`	Use `Array.prototype.slice.call()`
`class MyClass {}`	Use constructor functions
`async/await`	Use GlideRecord callbacks
`Promise`	Use GlideRecord with callbacks

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