How do I extract the first argument from a function in tree-sitter

Question

Given that I have the code below in JavaScript/Typescript:

findOne('testing', () => {
});

findLegacy('testing2', () => {
});

findOne('testing3', () => {
});

I want to match the first argument of every function call using a tree-sitter query.

Here's where I got to, it matches all arguments

(call_expression arguments: (arguments) @arguments)

How do I match only the first argument?

As a bonus challenge, can I match the first argument of functions called findOne only?

score 1 · Accepted Answer · answered Dec 08 '21 at 00:30

How do I match only the first argument?

(call_expression
  arguments: (arguments ((string)+ @desc))
)

As a bonus challenge, can I match the first argument of functions called findOne only?

(call_expression
  function: (identifier) @fn
  arguments: (arguments ((string)+ @desc))
  (#eq? @fn "findOne")
)

1 Answers1