web.config

<configuration>
    <system.web>
        <customErrors mode="off"/>
    </system.web>
    <system.webServer>
        <httpErrors existingResponse="PassThrough"/>
        <handlers>
            <add name="iisnode" path="index.js" verb="*" modules="iisnode"/>
        </handlers>
        <iisnode logDirectory="logs" devErrorsEnabled="false" debuggingEnabled="false" enableXFF="true"/>
        <rewrite>
            <rules>
                <rule name="HTTP/S to HTTPS Redirect" enabled="true" stopProcessing="true">
                    <match url="(.*)" />
                    <conditions logicalGrouping="MatchAny">
                        <add input="{SERVER_PORT_SECURE}" pattern="^0$" />
                    </conditions>
                    <action type="Redirect" url="https://{HTTP_HOST}/{R:1}" redirectType="Permanent" />
                </rule>
                <rule name="DynamicContent">
                    <conditions>
                        <add input="{{REQUEST_FILENAME}}" matchType="IsFile" negate="True"/>
                    </conditions>
                    <action type="Rewrite" url="index.js"/>
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>