JS: fix panic when 'for(let ' has bad syntax, see #108 #91

	name: Go
	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Go
	uses: actions/setup-go@v2
	with:
	go-version: 1.16
	- name: Build
	run: go build -v ./...
	- name: Tests with coverage
	run: go test -race -v -count=1 -coverprofile=coverage.out ./...
	- name: Upload Code Coverage
	uses: codecov/codecov-action@v1
	with:
	name: codecov
	fail_ci_if_error: true
	golangci:
	name: lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: golangci-lint
	uses: golangci/golangci-lint-action@v2
	continue-on-error: true
	with:
	version: latest

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