Script-parameterNames.js

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load(libdir + "asserts.js");

var g = newGlobal({newCompartment: true});

var dbg = new Debugger;

var gDO = dbg.addDebuggee(g);

function check(expr, expected) {

  let completion = gDO.executeInGlobal(expr);

  if (completion.throw)

    throw completion.throw.unsafeDereference();

  let fn = completion.return;

  if (expected === undefined)

    assertEq(fn.script.parameterNames, undefined);

  else

    assertDeepEq(fn.script.parameterNames, expected);

check('(function () {})', []);

check('(function (x) {})', ["x"]);

check('(function (x = 1) {})', ["x"]);

check('(function (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z) {})',

      ["a","b","c","d","e","f","g","h","i","j","k","l","m",

       "n","o","p","q","r","s","t","u","v","w","x","y","z"]);

check('(function (a, [b, c], {d, e:f}) { })',

      ["a", undefined, undefined]);

check('(async function (a, b, c) {})', ["a", "b", "c"]);

check('(async function* (d, e, f) {})', ["d", "e", "f"]);

// Non-function scripts have |undefined| parameterNames.

var log = [];

dbg.onEnterFrame = function(frame) {

  log.push(frame.script.parameterNames);

};

g.evaluate("function foo(a, b) { return eval('1'); }; foo();");

assertDeepEq(log, [undefined, ["a", "b"], undefined]); // global, function, eval