Dynamics Community Forum Thread Details

Powerapps solution checker use strict issue

Hi Tia,
This is one known issue.

How do you enable strict mode?

Simple. Toss this at the top of a program to enable it for the whole script:

"use strict";

Or place it within a function to turn on strict mode only within that context.

function imStrict(){
  "use strict";
  // ... your code ...
}

function imStrict(){
  "use strict";
  // ... your code ...
}

Following doc list the MS Best practice rules used by solution checker
https://docs.microsoft.com/en-us/powerapps/maker/common-data-service/use-powerapps-checker#best-practice-rules-used-by-solution-checker
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode/Transitioning_to_strict_mode
Strict mode is a way to introduce better error-checking into your code. Code should run in strict mode wherever possible. This is a JavaScript warning.
Add use strict to the JavaScript file, this link explains it more detail
According to this article it Strict mode helps :
It catches some common coding bloopers, throwing exceptions.
It prevents, or throws errors, when relatively “unsafe” actions are taken (such as gaining access to the global object).
It disables features that are confusing or poorly thought out.
Should you use single or double quotes e.g.
‘use strict’;
or
“use strict”;
In JavaScript, it doesn’t matter if you use single or double quotes, here for more details
To invoke use strict for the whole file, place it before any other JavaScript statements. It’s possible to apply use strict for specific functions.
Reference Blog:https://crmbusiness.wordpress.com/2020/01/16/what-the-solution-checker-does-and-why-you-should-use-it/
Hope above would hlep.