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-rw-r--r--README.md1
-rw-r--r--src/ldblib.js22
2 files changed, 17 insertions, 6 deletions
diff --git a/README.md b/README.md
index 0f197ce..1b58b91 100644
--- a/README.md
+++ b/README.md
@@ -64,6 +64,7 @@ In the browser `require` and `package.loadlib` try to find a file by making sync
- `os.rename`
- `os.tmpname`
- `os.execute`
+- `debug.debug()` doesn't work from web workers due to lack of a method to get synchronous user input
- [Weak tables](http://www.lua.org/manual/5.3/manual.html#2.5.2)
diff --git a/src/ldblib.js b/src/ldblib.js
index a189976..940c525 100644
--- a/src/ldblib.js
+++ b/src/ldblib.js
@@ -395,16 +395,28 @@ const dblib = {
"upvaluejoin": db_upvaluejoin
};
+let getinput;
if (typeof process !== "undefined") { // Only with Node
const readlineSync = require('readline-sync');
readlineSync.setDefaultOptions({
prompt: 'lua_debug> '
});
-
- // TODO: if in browser, use a designated input in the DOM ?
- const db_debug = function(L) {
+ getinput = function() {
+ return readlineSync.prompt();
+ };
+} else if (typeof window !== "undefined") {
+ /* if in browser use window.prompt. Doesn't work from web workers.
+ See https://developer.mozilla.org/en-US/docs/Web/API/Window/prompt
+ */
+ getinput = function() {
+ let input = prompt("lua_debug>", "");
+ return (input !== null) ? input : "";
+ };
+}
+if (getinput) {
+ dblib.debug = function(L) {
for (;;) {
- let input = readlineSync.prompt();
+ let input = getinput();
if (input === "cont")
return 0;
@@ -420,8 +432,6 @@ if (typeof process !== "undefined") { // Only with Node
lua.lua_settop(L, 0); /* remove eventual returns */
}
};
-
- dblib.debug = db_debug;
}
const luaopen_debug = function(L) {