panic: Scope location 47 must be greater than 84 about esparse

[amasad]

Interesting, do you know which package is causing this?

[Obaida-Albaroudi]

@programmeruser2 Hi! Just looked into this for you and it looks like there was an issue with the .replit file. If you add a closing quotation at the end of the run command it should work. I attached a screenshot of how I got my fork to work as well as my forked repl.

My repl:

• https://replit.com/@obaidaa/language-bot#.replit

[programmeruser2]

@Obaida-Albaroudi Yes, it does work if you tell the packager to ignore the current directory, which is functionally equivalent to turning it off. The bug still persists if you don't.

[cherryblossom000]

I'm having the same error, but I'm not sure if it's the same bug.

I've narrowed it down to a minimal example (playground):

package main

import (
	"github.com/amasad/esparse/logging"
	"github.com/amasad/esparse/parser"
)

func main() {
	logger, _ := logging.NewStderrLog(logging.StderrOptions{})
	path := "file.js"
	parser.Parse(logger, logging.Source{
		Index:        0,
		AbsolutePath: path,
		PrettyPath:   path,
		Contents:     `(a = () => {}) => {}`,
	}, parser.ParseOptions{})
}

This outputs:

panic: Scope location 0 must be greater than 5 [recovered]
	panic: Scope location 0 must be greater than 5

goroutine 1 [running]:
github.com/amasad/esparse/parser.Parse.func1(0xc000191f38)
	/tmp/gopath258687768/pkg/mod/github.com/amasad/[email protected]/parser/parser.go:7827 +0x6b
panic(0x51bd60, 0xc0000102c0)
	/usr/local/go-faketime/src/runtime/panic.go:965 +0x1b9
github.com/amasad/esparse/parser.(*parser).pushScopeForParsePass(0xc000188000, 0x2, 0x0, 0x0)
	/tmp/gopath258687768/pkg/mod/github.com/amasad/[email protected]/parser/parser.go:272 +0x39f
github.com/amasad/esparse/parser.(*parser).parseParenExpr(0xc000188000, 0x0, 0x0, 0x0, 0x0)
	/tmp/gopath258687768/pkg/mod/github.com/amasad/[email protected]/parser/parser.go:1759 +0x6c5
github.com/amasad/esparse/parser.(*parser).parsePrefix(0xc000188000, 0x0, 0x0, 0x7f7500000000, 0x0, 0x0)
	/tmp/gopath258687768/pkg/mod/github.com/amasad/[email protected]/parser/parser.go:1915 +0x15cf
github.com/amasad/esparse/parser.(*parser).parseExpr(0xc000188000, 0x0, 0x400, 0x30, 0x7f7569803e00)
	/tmp/gopath258687768/pkg/mod/github.com/amasad/[email protected]/parser/parser.go:2435 +0x45
github.com/amasad/esparse/parser.(*parser).parseStmt(0xc000188000, 0x101, 0x0, 0x0, 0x0)
	/tmp/gopath258687768/pkg/mod/github.com/amasad/[email protected]/parser/parser.go:4592 +0x110
github.com/amasad/esparse/parser.(*parser).parseStmtsUpTo(0xc000188000, 0x0, 0x101, 0x7, 0x541f14, 0x7)
	/tmp/gopath258687768/pkg/mod/github.com/amasad/[email protected]/parser/parser.go:4834 +0xa6
github.com/amasad/esparse/parser.Parse(0xc0000620c0, 0x0, 0x541f14, 0x7, 0x541f14, 0x7, 0x5445b8, 0x14, 0x0, 0x0, ...)
	/tmp/gopath258687768/pkg/mod/github.com/amasad/[email protected]/parser/parser.go:7851 +0x1d0
main.main()
	/tmp/sandbox989750109/prog.go:11 +0x125

Program exited: status 2.

I think it's having trouble with an arrow function as the default parameter of another arrow function.

I would try and fix this and open a PR, but I have absolutely no experience with Go.