function isImportedBigInt( scope ) {
	var isNotBuiltIn;
	var v;

	isNotBuiltIn = scope.set.has( 'BigInt' );
	if ( isNotBuiltIn ) {
		v = scope.set.get( 'BigInt' );
		if (
			v.defs.length > 0 &&
			v.defs[ 0 ].node.type === 'VariableDeclarator' &&
			v.defs[ 0 ].node.init &&
			v.defs[ 0 ].node.init.type === 'CallExpression' &&
			v.defs[ 0 ].node.init.callee.name === 'require' &&
			v.defs[ 0 ].node.init.arguments[ 0 ].value === '@stdlib/bigint/ctor'
		) {
			return true;
		}
	}
	return false;
}
Checks whether using imported constructor from `@stdlib/bigint/ctor`.

@private
@param {Object} scope - scope
@returns {boolean} boolean indicating if using imported constructor from `@stdlib/bigint/ctor`