Only enable C++20 when nodejs >= 23

[minggangw]

This patch implements to enable C++20 only when nodejs >= 23, which improve the compatibility with g++ lower versions, because C++20 only needed for nodejs >= 23.

Fix: #1089

[Copilot]

Pull Request Overview

This PR updates the build configuration to conditionally enable C++20 only when Node.js is version 23 or higher, while using C++17 for lower versions.

• Introduces a new key to determine the major Node.js version.
• Applies conditional logic in the build flags for both Linux and Windows targets based on the Node.js version.

Comments suppressed due to low confidence (1)

binding.gyp:92

• Similarly, under the Windows section, 'cflags' is used for node_major_version >= 23 while 'cflags_cc' is used for node_major_version < 23. Using consistent keys could avoid unexpected behavior.

'cflags': [

[Copilot]

The use of 'cflags' under the condition for node_major_version >= 23 is inconsistent with the use of 'cflags_cc' for node_major_version < 23. Consider standardizing the flag key (likely using 'cflags_cc') to prevent potential build issues.

Suggested change

	'cflags': [
	'cflags_cc': [

[Copilot]

Pull Request Overview

This PR enables the use of C++20 only when Node.js version is 23 or above while falling back to C++17 otherwise, improving compatibility with older g++ versions.

• Introduces a new variable, node_major_version, extracted from Node.js version.
• Adds conditional blocks in both Linux and Windows targets to set the C++ standard appropriately.

Comments suppressed due to low confidence (1)

binding.gyp:15

• The node_major_version value is extracted as a string, which may cause unexpected behavior when used in numeric comparisons. Consider converting it to a number to ensure accurate condition evaluation.

    'node_major_version': '<!(node -p "process.versions.node.split('.')[0]")',

[coveralls]

coverage: 85.355%. remained the same
when pulling 6d79778 on minggangw:fix-1089
into ff07c86 on RobotWebTools:develop.