How to get the full code function body of a function node from the Typescript Compiler?

I'm relatively new to doing stuff with the Typescript Compiler. I'm trying to write some code that:

Given a .ts file, it can extract all the functions from it. Specifically, I'm trying to achieve an array of objects of the type { funcName: string, funcBody: string } where funcName is the name of the function, and funcBody is the overall code of the function (including the function declaration).

Currently, I have this simple piece of code

export async function extract(file: string) {
  const program = ts.createProgram([file], { allowJs: true });
  const sourceFile = program.getSourceFile(file);
  if (!sourceFile) return [];

  const output: any = [];

  ts.forEachChild(sourceFile, (node) => {
    if (ts.isFunctionDeclaration(node)) {
      const funcName = node.name ? node.name.text : "<anonymous>";
      const funcBody = node.body;
      console.log({ funcName, funcBody });
    }
  });
}

It is able to get the funcName just fine, but I am unable to figure out how to get the actual funcBody.

and funcBody is the overall code of the function (including the function declaration).

If you want to get the text of the function declaration without leading trivia (comments & whitespace), then you can do:

if (ts.isFunctionDeclaration(node)) {
  const funcName = node.name ? node.name.text : "<anonymous>";
  const funcDecl = node.getText(sourceFile);
  console.log({ funcName, funcDecl });
}

To get just the function body text, use node.body.getText(sourceFile).slice(1, -1).trim() (slice to remove the surrounding braces).

A good resource is: https://ts-ast-viewer.com/#code/GYVwdgxgLglg9mABAUwB4EMC2AHANsgCgEpEBvAKESsQgQGc58A6XOAcwIFYiBucgXyA (It will tell you the result of .getText() in the rightmost column)