Call to undefined method Hussainweb\DrupalComposerHelper\Options::getWebPrefix()

[ric-donaldp]

Running on a server using PHP 5.6 there seems to be some issues with the Beta 4 version.

Composer just updated to beta4 version of DrupalComposerHelper and then failed with the following error:

PHP Fatal error: Call to undefined method Hussainweb\DrupalComposerHelper\Options::getWebPrefix() in /....../vendor/hussainweb/drupal-composer-helper/src/DrupalFiles.php on line 26

Subsequent calls to composer update give this error:

PHP Parse error: syntax error, unexpected 'const' (T_CONST), expecting variable (T_VARIABLE) in /...../vendor/hussainweb/drupal-composer-helper/src/Options.php on line 9

Line 9 is:
public const DEFAULT_WEB_PREFIX = 'web';

for which the syntax was added with PHP 7.1.0 according to this:
https://www.php.net/manual/en/language.oop5.constants.php

I should add this is for a Drupal 7 project.
Reverting to the beta3 version to get around the issue.

[hussainweb]

Thanks for reporting this. Since this change is already out, I am thinking of how to handle the multiple versions. Since Drupal is dropping PHP 5.6 support soon, this is not very important but I want to do this cleanly.

[hussainweb]

There are two problems referenced in this issue. I have created #16 to fix the problem about PHP Parse error. I am not sure how to avoid the first problem but the workaround is to just run composer install again.