What the best way to do syntax and type checking in complier?

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IDE

I Build my own languge and I use antlr4 and I work on online parse ... my question is : We can do syntax and type checking in online parse in tow methode :

The first methode:

to visit the ast first time to check if I didn't have any syntax errors so If I didn't have any error then I visit ast for do type checking ... here I do type checking only if there are no syntax errors

The second methode :

to visit the ast first time to check if I didn't have any syntax errors then I visit ast for do type checking although there are a syntax errors. ... here I do type checking and don't care if there are syntax error or not ... So what the better methode in online parse ? and when we talke about IDE like (visual studio or eclipse ) which methode use ?

What I have tried:

I need to knew what the best way