in packages/babel-plugin-idx/src/babel-plugin-idx.js [110:124]
function makeCondition(node, state, inside) {
if (inside) {
return t.ConditionalExpression(
t.BinaryExpression(
'!=',
t.AssignmentExpression('=', state.temp, node),
t.NullLiteral(),
),
inside,
state.temp,
);
} else {
return node;
}
}