feat: unmount file

.vscode/settings.json

@@ -1,4 +1,16 @@
 {
     "editor.formatOnSave": true,
-    "files.insertFinalNewline": true
+    "files.insertFinalNewline": true,
+    "cSpell.words": [
+        "createtable",
+        "getmetatable",
+        "newindex",
+        "newuserdata",
+        "openlibs",
+        "pushcclosure",
+        "pushcfunction",
+        "setfield",
+        "setmetatable",
+        "xmove"
+    ]
 }

package.json

@@ -1,6 +1,6 @@
 {
     "name": "wasmoon-lua5.1",
-    "version": "1.17.1",
+    "version": "1.17.2",
     "description": "A real lua 5.1 VM with JS bindings made with webassembly",
     "main": "dist/index.js",
     "scripts": {

src/lua.ts

@@ -88,6 +88,10 @@ export default class Lua {
         this.luaApi.module.FS.writeFile(path, content);
     }
 
+    public unmountFile(path: string): void {
+        this.luaApi.module.FS.unlink(path);
+    }
+
     public doString(script: string): Promise<any> {
         return this.callByteCode((thread) => thread.loadString(script));
     }
@@ -123,7 +127,7 @@ export default class Lua {
                 thread.luaApi.lua_setmetatable(thread.address, -2);
                 thread.luaApi.lua_pushcclosure(thread.address, registerFuncCallFunction(this.global), 1);
 
-                // proxy for function, aviod `attempt to index global 'TestFunction' (a function value)`
+                // proxy for function, avoid `attempt to index global 'TestFunction' (a function value)`
                 thread.luaApi.lua_createtable(thread.address, 0, 0);
                 thread.luaApi.lua_pushcfunction(thread.address, registerRedirectIndexFunction(this.global, target));
                 thread.luaApi.lua_setfield(thread.address, -2, '__index');
@@ -163,7 +167,7 @@ export default class Lua {
                 // Move all stack results to the global state to avoid referencing the thread values
                 // which will be cleaned up in the finally below.
                 this.luaApi.lua_xmove(thread.address, this.global.address, result.length);
-                // The shenanigans here are to return the first reuslt value on the stack.
+                // The shenanigans here are to return the first result value on the stack.
                 // Say there's 2 values at stack indexes 1 and 2. Then top is 2, result.length is 2.
                 // That's why there's a + 1 sitting at the end.
                 return this.global.getValue(this.global.getTop() - result.length + 1);

test/filesystem.test.js

@@ -59,4 +59,12 @@ describe('Filesystem', () => {
         const value = await lua.doFile('init.lua');
         expect(value).to.be.equal(content);
     });
+
+    it('unmount a file and require it should throw', async () => {
+        const lua = await Lua.create();
+        lua.mountFile('init.lua', `return 42`);
+        lua.unmountFile('init.lua');
+
+        await expect(lua.doString('require("init")')).to.eventually.be.rejected;
+    });
 });