fix: resolve syntax error in old TypeScript versions

[ahmedAlaaInstabug]

Description of the change

1. fix unExpected token (??) on old node version

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Related issues

Fixes #1161
Jira ID = INSD-11129

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests

Code review

• This pull request has a descriptive title and information useful to a reviewer
• Issue from task tracker has a link to this pull request

[InstabugCI]

Coverage Report

Label	Coverage	Status
JavaScript	96.3%	✅
Android	47.5%	✅
iOS	41.7%	✅

Generated by 🚫 dangerJS against 13de994

[a7medev]

LGTM 👌🏼. Let's add a changelog item and we'd be good to go.

Let's also link it to a Jira card.

[InstabugCI]

Your snapshot has been generated! 🚀

Installation

You can install the snapshot through NPM:

npm install https://github.com/Instabug/Instabug-React-Native\#snapshot/fix-init-function-error-on-old-node-version

or Yarn:

yarn add https://github.com/Instabug/Instabug-React-Native\#snapshot/fix-init-function-error-on-old-node-version

[a7medev]

Let's change this if condition to explicitly check for null or undefined instead of !config.networkInterceptionMode since the enum values will get mapped to integer values with the first enum value being assigned the number 0 so if a user sets the networkInterceptionMode to the first enum value JavaScript will treat it as false thus changing the user's intended value to the default one even when it's actually set in the user's code.

In this case the first enum value is javascript which is the current default so it won't cause bugs, but if we changed the default to be something else users won't be able to set the interception mode to the first enum value as explained above.

Suggested change

	if (!config.networkInterceptionMode) {
	// The `== null` here acts as `=== null or === undefined`
	if (config.networkInterceptionMode == null) {

[a7medev]

LGTM 👌