function validate( node ) {
		var callExpression;
		var requirePath;
		var declaration;
		var name;

		declaration = node.declarations[ 0 ];
		if ( declaration.type === 'VariableDeclarator' ) {
			callExpression = declaration.init;
			if (
				callExpression &&
				callExpression.callee &&
				callExpression.callee.name === 'require'
			) {
				name = declaration.id.name;
				requirePath = callExpression.arguments[ 0 ].value;
				if (
					isString( requirePath ) &&
					RE_CONSTANT_PKG.test( requirePath ) &&
					!isUppercase( name )
				) {
					report( node );
				}
			}
		}
	}
Checks that a required `stdlib` constant is uppercase.

@private
@param {ASTNode} node - node to examine