Use Node's native source map support instead of a third-party module.

nevkontakte · nevkontakte · commit 22c65b81261d · 2024-07-31T20:43:04.000+01:00
Since Node 12 it supports the --enable-source-maps flag, which has been
considered stable since Node 14. Given we are now on 18, we can drop the
unneeded dependency and use the built-in flag.
diff --git a/README.md b/README.md
@@ -57,11 +57,7 @@ _Note: GopherJS will try to write compiled object files of the core packages to
 
 #### gopherjs run, gopherjs test
 
-If you want to use `gopherjs run` or `gopherjs test` to run the generated code locally, install Node.js 10.0.0 (or newer), and the `source-map-support` module:
-
-```
-npm install --global source-map-support
-```
+If you want to use `gopherjs run` or `gopherjs test` to run the generated code locally, install Node.js 18 (or newer).
 
 On supported `GOOS` platforms, it's possible to make system calls (file system access, etc.) available. See [doc/syscalls.md](https://github.com/gopherjs/gopherjs/blob/master/doc/syscalls.md) for instructions on how to do so.
 
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -1,9 +1,6 @@
 {
   "name": "gopherjs",
   "license": "BSD-2-Clause",
-  "dependencies": {
-    "source-map-support": "^0.5.19"
-  },
   "optionalDependencies": {
     "syscall": "file:./node-syscall"
   }
diff --git a/tool.go b/tool.go
@@ -838,13 +838,7 @@ func sprintError(err error) string {
 func runNode(script string, args []string, dir string, quiet bool, out io.Writer) error {
 	var allArgs []string
 	if b, _ := strconv.ParseBool(os.Getenv("SOURCE_MAP_SUPPORT")); os.Getenv("SOURCE_MAP_SUPPORT") == "" || b {
-		allArgs = []string{"--require", "source-map-support/register"}
-		if err := exec.Command("node", "--require", "source-map-support/register", "--eval", "").Run(); err != nil {
-			if !quiet {
-				fmt.Fprintln(os.Stderr, "gopherjs: Source maps disabled. Install source-map-support module for nice stack traces. See https://github.com/gopherjs/gopherjs#gopherjs-run-gopherjs-test.")
-			}
-			allArgs = []string{}
-		}
+		allArgs = []string{"--enable-source-maps"}
 	}
 
 	if runtime.GOOS != "windows" {

Original file line number	Diff line number	Diff line change
`@@ -1,9 +1,6 @@`
`1`	`1`	`{`
`2`	`2`	`"name": "gopherjs",`
`3`	`3`	`"license": "BSD-2-Clause",`
`4`		`- "dependencies": {`
`5`		`- "source-map-support": "^0.5.19"`
`6`		`- },`
`7`	`4`	`"optionalDependencies": {`
`8`	`5`	`"syscall": "file:./node-syscall"`
`9`	`6`	`}`