Description

Enabling bundle-mode (luaBundle and luaBundleEntry) with sourceMapTraceback) will cause to appear {#SourceMapTraceback} in the result file.

Steps to reproduce

1. Create a project with dependencies:

{
  "typescript": "^4.4.2",
  "typescript-to-lua": "^1.0.0"
}

2. Create tsconfig.json with listed content:

{
  "$schema": "https://raw.githubusercontent.com/TypeScriptToLua/vscode-typescript-to-lua/master/tsconfig-schema.json",
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "strict": true,
    "skipLibCheck": true
  },
  "tstl": {
    "luaTarget": "JIT",
    "sourceMapTraceback": true,
    "luaBundleEntry": "src/index.ts",
    "luaBundle": "dist/index.lua"
  }
}

3. Create an empty src/index.ts file
4. Run tstl
5. Check the received dist/index.lua. It looks like:

--[[ Generated with https://github.com/TypeScriptToLua/TypeScriptToLua ]]

local ____modules = {}
local ____moduleCache = {}
local ____originalRequire = require
local function require(file)
    --- require code here, ok .....
end
____modules = {
["lualib_bundle"] = function() 
    --- lualib code here, ok .....
end,
["index"] = function() --[[ Generated with https://github.com/TypeScriptToLua/TypeScriptToLua ]]
require("lualib_bundle");
{#SourceMapTraceback}     -- <<--- Look here
 end,
}
return require("index")

Why does it happen

The "macro-string" {#SourceMapTraceback} should be replaced here:

Debugging

I will try to debug the compiler and list the ideas below. I believe it will help to determine the problem,

1. Debugger says, that print function from LuaPrinter.ts successfully replaces the macro-string
2. Correct version is being added into the transpiledFiles array

   TypeScriptToLua/src/transpilation/transpile.ts

   Lines 62 to 74 in 691c9cc

   	const processSourceFile = (sourceFile: ts.SourceFile) => {
   	const { file, diagnostics: transformDiagnostics } = transformSourceFile(program, sourceFile, visitorMap);
   	diagnostics.push(...transformDiagnostics);
   	if (!options.noEmit && !options.emitDeclarationOnly) {
   	const printResult = printer(program, emitHost, sourceFile.fileName, file);
   	transpiledFiles.push({
   	sourceFiles: [sourceFile],
   	fileName: path.normalize(sourceFile.fileName),
   	luaAst: file,
   	...printResult,
   	});
   	}

3. I think error is in this line (especially, in getEmitPlan function). Because freshFiles contains correct code (with replaced macro-string)
   

   TypeScriptToLua/src/transpilation/transpiler.ts

   Line 38 in 691c9cc

   const { emitPlan } = this.getEmitPlan(program, diagnostics, freshFiles);

4. On this line: resolutionResult.resolvedFiles contains correct code, bundleFile -- does not
   

   TypeScriptToLua/src/transpilation/transpiler.ts

   Line 72 in 691c9cc

   const [bundleDiagnostics, bundleFile] = getBundleResult(program, resolutionResult.resolvedFiles);

5. Here. The moduleSourceNode function. Returns array of strings for lualib_bundle and array with incorrect SourceNode for index
   

   TypeScriptToLua/src/transpilation/bundle.ts

   Line 52 in 691c9cc

   const moduleTableEntries = files.map(f => moduleSourceNode(f, createModulePath(f.fileName, program)));

   
   
6. Finally, this line. The function moduleSourceNode contains code (with correct code) and sourceMapNode with child with incorrect code.
   

   TypeScriptToLua/src/transpilation/bundle.ts

   Line 84 in 691c9cc

   return joinSourceChunks([tableEntryHead, sourceMapNode ?? code, tableEntryTail]);

Suggestion

I have replaced the line (p. 6) by return joinSourceChunks([tableEntryHead, code, tableEntryTail]); and it works.

Moreover, here specified, that code always exists. So, what about to put code instead of sourceMapNode ?? code?